Bad Voltage Regulator Symptoms Motorcycle

75% of technical problems in our shop on plasma TV's are caused by overheating problems. ECM not communicating with alternator's voltage regulator. The alternator only charges at an idle (it's been checked and is good), when the battery gets low the battery light on the dash doesn't come on, the check engine light comes on every 100 miles or so, when jumping the terminal to get the cel to flash the code it doesn't flash at all. If you get voltage drops I run extra wires from the regulator to the battery. If the voltage drops below approximately 13 volts, the motorcycle will begin to drain the battery and eventually the engine will stop. The regulator is what holds the voltage output at a steady (suitable) level. There are ways to test what is bad, the alternator or the voltage regulator. What I do is put a voltmeter on the battery terminals with the car idling and it should read about 12-13 volts, then have someone slowly raise the idle of the engine and you should see the volts raise to about 14-15 volts. 4 dc volts no matter what the stator is putting out, which is AC volts that varies with engine RPM. You can check this yourself if you have a multimeter at home. The voltage regulator will allow the alternator to make enough power to maintain proper voltage level, but not allow system voltage to rise to a harmful level. My issue w. The red and black wires terminate in the back of the Clearwater Voltage Sentry control module, along with the sheathed wire with the LED. Disconnected the stator wiring, and ran the bike, stator is putting out 60+ volts. The following post of a full wave motorcycle shunt regulator circuit was requested by Mr. New full battery, the service manual tells how to check ACV output which proved to be in spec, BUT. Check for voltage drop between cover of voltage regulator and body on low voltage scale of voltmeter. Find great deals on motorcycle voltage regulators & rectifiers. That is a custom stator rebuild job and we will need your old stator part to rebuild it. Ignition Coil/Plug Wires & Caps If you are having a no-spark problem, a good place to start after ruling out shorts, grounds, switches and spark plugs, is the ignition coil, spark plug caps and wires. Even with no load the output only comes up a volt or so but no where near 12v. What you do is unplug the regulator and check for battery voltage on the center wire (should be purple). A high voltage form the regulator usually means that it's not getting either a good ground, or there's some corrosion interfering with it. It's bad all around! First, put a new battery in. voltage regulator and wires getting very hot I am trying to get my bike ready for the DYNO and while I had it running today I noticed s slight bit of smoke coming from the wires that attach to the regualtor that some fromt he stator. 6aw-81960-00-00 Yamaha. With the history of failures and symptoms, they just replaced it, no questions asked. It is probably the only real design flaw in the VFR. Don't run the scoot with a bad voltage regulator 2. Power variations damaging to various. The regulator provides current to the field winding to produce a magnetic field that the stator windings convert to a voltage and current used to charge the battery and run the electrical system. If there's extra resistance in the system somewhere, the sensors in the regulator get a false reading, and it tries to compensate for it. And that from just testing the bike a few km's. I have a 2000 harley fatboy. - posted in MXZ / Legend / Summit / Grand Touring / Formula : 2000 Formula with estart has real dim lights. We install a new voltage regulator and wire it correctly. Battery sensing helps cover up the odd bit of slack maintenance to ensure reliability and is also vital if it is decided to use diodes to split the charge. This three-part video series walks us through Harley Davidson charging system replacement. Running the ski without a battery is verry bad mojo! The charging circuit is designed to have the battery as a load and to maintain it's voltage. A battery with low electrolyte will mimic the symptoms of a dying battery, but can be fully revived by adding distilled water and charging. jpg CG125B2. If the charging system, the question is stator or voltage regulator. The connector to my voltage regulator wasn't completly snapped in, and it came off while driving down a bumpy road. (but you will probably see the voltage drop instead of raise, and you will be doing the other test shortly anyway. A typical 12 volt automotive system, engine running at idle, all accessories turned off, should read 14. Often, a bad starter solenoid will have the following signs. You should check all the connections from the regulator to the alternator to make sure that they are in good condition. Sealed and Non-Sealed Connectors. The dealer also said that Harley may do a recall on the 05's. I have filed the points and lubricated the VR. Find Bike Parts, Bodies, and Frames Right Here 2001 Honda Rebel 250 Cmx250c Oem Rectifier Voltage Regulator. The condensers last around 20,000 miles, so they do need to be replaced from time to time as a normal service item. The meter cables should be attached as before. the regulator is a bundle of diodes that turn ac voltage to dc voltage. The regulator prevents the alternator from producing too much at high rpm, because this would hurt the electrical components and the battery. Symptoms of a bad voltage regulator might include a dead battery, dim or pulsing dash lights, or erratic engine performance. You should be reading between 13. Whether your bike is blowing fuses, draining the battery, or displaying fault codes, a quick once over of the electrical system can sometimes identify the issues. Right now it's 14. I was wondering, if a diode breaks, can I put a new diodes before and inline with the broken unit to get current to the regulator without having to remove the broken. Use the Fluke voltage drop figures as guidelines for your decisions. I am not sure what kind of voltage I was measuring, but it was definitely voltage that got past the VR. The red and black wires terminate in the back of the Clearwater Voltage Sentry control module, along with the sheathed wire with the LED. Bad alternator symptoms: Dim lights. Eastern Performance Cycles is an aftermarket motorcycle store specializing in Harley Davidson parts and accessories. The bad dates were somewhere from October 2011 to February 2012. Run this test for One Full Minute. The following symptoms should give you an idea of what's gone wrong, but if you're still not sure, you can always bring your vehicle to Advance Auto Parts for a charging and starting system test. If a voltage regulator is bad, then the power sent to the battery will be jumpy and erratic. I was in a trip and it would bearly start took it to a shop they checked the battery and voltage while it was running everything checked out. Shop the best Harley-Davidson Voltage Regulators & Rectifiers for your motorcycle at J&P Cycles. I had the exact same symptoms as you described. 6 volts with the engine running, or the light doesn’t go out, or both, and you’ve checked all the connections I’ve described, then either the voltage regulator is bad—it’s likely stuck in the bypassed configuration—or the alternator is bad. It really throws your voltage off. If the voltage drops below approximately 13 volts, the motorcycle will begin to drain the battery and eventually the engine will stop. This only happens about 2 or 3 times a week so does this indicated a bad ground vice bad regulator, or could it be an intermittent problem with the regulator. The black wire is a ground or “earth” and it can be grounded in the usual manner to the motorcycle or the ground terminal on the battery. What you do is unplug the regulator and check for battery voltage on the center wire (should be purple). High-reliability voltage regulators feature rugged aluminum alloy construction. Motorcycle Voltage Regulator Rectifier For Honda ATV TRX300 FW FOURTRAX 300 4X4. What's going on? Could it be the voltage regulator? If so where is it?. Had it happen on a 97 trail. I have a 2002 GMC Sierra 6. Voltage regulators are commonly found in vehicles and other electronic equipment. The fuel injectors can’t flow normally if they have low fuel pressure due to a bad fuel pressure regulator. I was driving the other day, got on it a little and the car just died. Voltage regulator fails (11/10/2013) I've had problems recently with the oil temperature gauge and oil pressure gauge. 30v + heater with blower on max : 9. Sounds like what is happening is that the AC voltage coming in to the regulator is being shorted to ground directly instead of it being regulated to the 12-15 AC volts like normal. There are many possibilities for this. You can tell if your battery is sealed by looking for a row of six caps (or some kind of removable strip) across the top of the battery casing. Don't run the scoot with a bad voltage regulator 2. It really throws your voltage off. Bad reed symptoms If this is your first visit, be sure to check out the FAQ by clicking the link above. Symptoms of a bad voltage regulator might include a dead battery, dim or pulsing dash lights, or erratic engine performance. Pulling all the fuses one at a time, the voltage stayed. 1 Replacing a Voltage Regulator. Often, a bad starter solenoid will have the following signs. Ride for two days and guess what, dies while riding, try to start and. Alternators put out alternating current, and the battery needs direct current to charge, so there is a voltage rectifier that converts it, and it can suddenly go bad, too. If it falls below 12-volts your, brushes may be bad. The regulator ensures that the voltage is delivered within certain limits, as not to damage the battery. A voltage regulator generates a fixed output voltage of a preset magnitude that remains constant regardless of changes to its input voltage or load conditions. Re: Bad rectifier/voltage regulator? A bulged battery case is indicative of the battery freezing during a cold spell. Most problems people have with linear regulators are not because of a bad regulator. If you had no or very poor charging previously, it indicates a bad voltage regulator. If that is present then take a multimeter set on AC volts and put a lead on each white wire on the regulator plug and start the engine and rev it up, You should get a reading of 32 volts or above. Your voltage regulator is only supposed to allow voltage to travel in one direction. It is not necessarily "wierd" that the voltage drops off some at higher rev's, that's just the regulator working. ROADSTERCYCLE. Hope this isn't your case but check out for sure as u could replace the volt reg and if ecu is bad it could lean u out and make motor damage. You might notice that the battery cranks the engine over more slowly at times. A voltage regulator generates a fixed output voltage of a preset magnitude that remains constant regardless of changes to its input voltage or load conditions. Possible Symptoms: Headlight dims or brightens excessively with RPM, headlight filament or headlight fuse blows intermittently, blinker and other bulbs give out unexpectedly. A voltage regulator will limit the maximum amount of voltage from a power source and prevents a device or alternator from. Battery seems ok, even if it's old (from 2004) - it charges and holds charge well. 1 volts and increases the alternator output voltage to 15. Check voltage at the battery with the bike running at 3,600 RPM should be 14. but when I shut it off the voltage regulater started smoking. 7 or so then back down, on and off. In this case, however, it looks like it drops too much. Cart only runs with Voltage Regulator green wire disconnected I've had a charging problem for a few years, so I replaced the voltage regulator. Get free shipping, 4% cashback and 10% off select brands with a Gold Club membership, plus free everyday tech support on aftermarket Motorcycle Voltage Regulators & Rectifiers & motorcycle parts. One is a bad stator, use the procedure in the manual posted to check it both statically and dynamticly. Here are some common symptoms that hint towards having failing points and condenser: 1. You might notice that the battery cranks the engine over more slowly at times. (If you know how to do it, a voltage drop test should be the next test you perform. Now, it's fried AGAIN. As soon as you are connected and running you are loading the stator. What Are Signs of a Bad Voltage Regulator? Warning lights, unpredictable engine performance and dimming or pulsating lights are all signs of a faulty voltage regulator. Aside from a dead car battery, there are other signs of a bad alternator that aren’t as, well, extreme. Faulty Voltage Regulator. This again ensures you get full charging voltage at the battery. Check the wiring diagram for your model year and locate the sense line to the logic module. If that is present then take a multimeter set on AC volts and put a lead on each white wire on the regulator plug and start the engine and rev it up, You should get a reading of 32 volts or above. The volts will likely plummet if the battery is stuffed if the volts are high to begin with. Re: Bad voltage regulator? Don't even have to start. It should read within 1/2 volt or less of the battery. If there is any doubt, have the battery load tested or replaced. My battery light would come and go, but now its just onI've tested the 2 pin harness according to the manual and its all good on that side of things. ok guys i have been chasing this gremlin ever since i first posted this!!!! As stated i started with a new alternator, didnt fix the problem, (the old one was bad) got a new voltage regulator, didnt fix the problem, Put in a new battery this worked up until tonight when al the juice in the battery drained out!. Most problems people have with linear regulators are not because of a bad regulator. Shunt voltage regulator basics The circuit is designed so that at maximum load current the shunt regulator shunts or bypasses virtually no current to ground and at minimum load current, the shunt voltage regulator shunts or bypasses the full stator current to GROUND. Failed Shunt Regulator If this happens, your headlight may become very bright and then blow. So that’s the normal operating range of system voltage. 0L 2500HD that i am trying to sell. Each of these symptoms can also be attributed to other causes, but if the voltage regulator is failing, it can prevent the battery from charging properly or the alternator from putting out the correct voltage for vehicle. I checked the voltage. I have a v-star 1100 classic that charges while I am running it in the garage, but sometime after we get out on the road and ride, the battery discharges and the bike dies. 5VDC then go to step # 3. 4 volts,” he advised. A voltage regulator generates a fixed output voltage of a preset magnitude that remains constant regardless of changes to its input voltage or load conditions. Drive it long enough and it will burn more than the headlight bulb out. also have brushes in alt cover that need to be replaced from time to time. A high voltage form the regulator usually means that it's not getting either a good ground, or there's some corrosion interfering with it. VFR Regulator/Rectifier Failure. is my voltage regulator bad? I have a 1991 gas club car. The one right beside the drivers knee is easy to forget and will cause these symptoms. Be sure the D- and Df connections at the brushes assembly are connected. Therefore, to obtain a reliable 12 Volt output voltage, an input of 15V+ is required – more than a 12V battery produces even when under charge. 2 volts, the Alternator probably has one or more Bad Diodes. That can all be done by dropping the bash plate. com Motorcycle Insurance Motorcycle Parts Motorcycle Helmets Motorcycle Tires Buell Motorcycles Buell Forum » 1125 R Superbike Board » Stator/Voltage Regulator/Charging System subforum. Either I have a bad battery or the voltage regulator on my 1990 Johnson 150 is on the way out. Shop our large selection of 1 Hand Grip Fits Electra for sale. We remove the old regulator and the wire off the 30 amp breaker. UNplug the voltage regulator. If the spring inside the regulator has weakened with age, if the valve or diaphragm that controls return flow is leaking, or the vacuum supply hose to the regulator is leaking, loose or plugged, it will affect fuel pressure in the fuel supply rail. Voltage should not go much higher than 14. If I pull the recharge connector the current stops flowing. Anything less or more indicates a bad alternator or voltage regulator. Shop the best Harley-Davidson Voltage Regulators & Rectifiers for your motorcycle at J&P Cycles. under the gauge pod has at least one i. Checked the voltage with bike running across the battery terminals, anly about 10. The fourth charging system part is the regulator. The battery voltage goes down on my bike all the time, however after a full charge it's okay for a couple of days. Jump Starting – NOT from a Running Car Submitted by Radford, B Davis. spiky with a bad diode), the meter can display false results; in some cases, wildly wrong. For my heater blower, I'm not getting nearly enough voltage (3v) and at my radio i'm getting 22V. The following symptoms should give you an idea of what's gone wrong, but if you're still not sure, you can always bring your vehicle to Advance Auto Parts for a charging and starting system test. Harley has not issued a recall. If it does, the generator is working and charging the battery. If they are nice and tight, then we can rule out a bad/loose belt and generator/alternator. 6 volts, replace battery. Shop the best Motorcycle Voltage Regulators & Rectifiers for your motorcycle at J&P Cycles. The other failure type is shunt regulator burnout. It started off with a dead battery. That is a custom stator rebuild job and we will need your old stator part to rebuild it. I am not sure what kind of voltage I was measuring, but it was definitely voltage that got past the VR. The regulator is what holds the voltage output at a steady (suitable) level. I've traced back all of the wiring and grounds, repolarized the generator. Measure the voltage at the regulator "IGN" terminal or the feed to the ballast resistor coming from the key. The regulator ensures that the voltage is delivered within certain limits, as not to damage the battery. Its not a problem with the voltage regulators but the socket (or however the thing is attached) that it plugs into. They tend to be fairly inefficient (some of the power is lost as heat). We offer a huge variety at great prices online. We install a new voltage regulator and wire it correctly. I took it to Autozone for testing, the test said the voltage regulator was bad. com FREE DELIVERY possible on eligible purchases. If it does, the generator is working and charging the battery. Check the voltage sense line to the logic module. Not sure if it is a bad ground or a bad voltage regulator. Regulator is ground, rectifier and regulator for the DC side. Recently I bought a used 2003 BMW F650GS Dakar. Free Same Day Store Pickup. Shop the best Motorcycle Voltage Regulators & Rectifiers for your motorcycle at J&P Cycles. now will not start at all, have tried good battery, adjusted valve clearances, tried good coil, new plug, compression is good. well I had an electrical bug on my 62 galaxie convertible today, It wouldnt start so I tapped on the voltage regulater with a hammer and then it started (which Ive found can be a problem with 60-64 fullsize fords if the voltage regulator is going bad). The bad dates were somewhere from October 2011 to February 2012. If the battery drops below 11. Re: Bad regulator /rectifier? I'm Just chasing the Gremlins because when my kids go back to school I want to ride and not have to worry about calling Triple A most of the time when i have tore this bike down it has taken just hours. Cutout will not cut in, but when the points are held closed manually the regulator functions normally. smell like it burn the cables - Answered by a verified Motorcycle Mechanic We use cookies to give you the best possible experience on our website. The motorcycle produces more electrical energy that is required to run the motorcycle. Run the motor at a fast idle. Ignition Coil/Plug Wires & Caps If you are having a no-spark problem, a good place to start after ruling out shorts, grounds, switches and spark plugs, is the ignition coil, spark plug caps and wires. It will, however, cause too much voltage to the lights and accessories, thus blowing the bulbs and hot grips can actually melt. You can carefully remove the cover, some are screwed on, others are tab bend, check to make sure the points, which excite the alternator, aren't fused closed to cause this. Another way to check this voltage drop directly, is to put one probe on your battery positive post, the other probe on the "ignition run" feed. 1978 Kawasaki 250 has a regulator that will produce 8. Radio won't power up, of. now will not start at all, have tried good battery, adjusted valve clearances, tried good coil, new plug, compression is good. Dim or flickering gauges. 5 ( engine running ). The automatic guess is a bad regulator. To test a voltage regulator, purchase a voltage meter. Check the wiring diagram for your model year and locate the sense line to the logic module. Start the engine and set the speed at full, and test the voltage again. How a Shunt Regulator Works. 0L 2500HD that i am trying to sell. First, unplug the voltage regulator and see if the engine shuts off with the key as normal. Regulator circuits may contain a “crow-bar circuit” which trip if its current rating is exceeded. I pulled out the service manual and did the recharge system test: Stator resistance is good, but the voltage regulator test bad on the recharge connector. Bad Boy mower parts for sale at BadBoyMowerParts. Change to a $15 solid state type (short can, about an inch), available from any chain parts store, and see what happens. #1: A series of rapid or successive clicks coming from the starter solenoid. A starter solenoid is a major component of an automotive starter system. bad motorcycle voltage regulator symptoms, can a bad battery affect a voltage regulator, can bad battery cause malfuntion of voltage regulator, causes of voltage regulator failure, how to know if indian motorcycle regulator rectifier is bad, motorcycle regulator failure symptoms, regulator failure because heating grips, what causes voltage. If the voltage does not rise, then check the output from the lighting coil to the R/R. P0563 KIA Tech Notes Higher than expected voltage problems are most likely caused by bad voltage regulator. Eastern Performance Cycles is an aftermarket motorcycle store specializing in Harley Davidson parts and accessories. 7 Volts on my turbo timer at first then it'll spike up to 15. The voltage regulator does just that, it regulates the voltage sent to the battery. You may have to register before you can post: click the register link above to proceed. 5 volts, you’d have a DC component of 13. To check your charging system get yourself a voltmeter, charge the battery and check the voltage. 5 ( engine running ). BTW: if you can detect AC at the alternator, it means the diode pack is bad, not that the voltage regulator is bad. Bad alternator or voltage regulator? When I bought the car (less than 6 month ago) supposedly it has had a new alternator put in. voltage regulator and wires getting very hot I am trying to get my bike ready for the DYNO and while I had it running today I noticed s slight bit of smoke coming from the wires that attach to the regualtor that some fromt he stator. First, unplug the voltage regulator and see if the engine shuts off with the key as normal. It controls all the DC voltage levels used to power things like the voltage regulator, CDI, turn signals, and starter solenoid. On most modern bikes there is a combined rectifier/regulator (reg/rect). Faulty Voltage Regulator. under the gauge pod has at least one i. or how ever you want. I left it running to see if the battery would charge. Make sure you have good ground connections at the alternator (alternator case) and voltage regulator, especially if your vehicle uses a remote voltage regulator. Can the voltage regulator be replaced? If so, is it the black module on the side of the alternator? Finally, is it worth it, or should I just go for the whole alternator given a price difference of about $50 ($110 for reman alternator; $60 for voltage regulator). what are the signs of a bad voltage regulator/rectifier? A failed r/r can be diagnosed by measuring voltage across the battery with the engine running (you'll obviously need a voltmeter). Remove the fuel tank. all a voltage regulator is supposed to do is regulate the voltage from your lighting coil. also have brushes in alt cover that need to be replaced from time to time. The voltage powers the generator motor's brushes for generator ignition and use. Many motorcycles use what is called a "Permanent Magnetic Alternator" because it is relative. For all your Harley Davidson motorcycle parts, accessories, and gear, turn to our online motorcycle parts and accessories store. With the history of failures and symptoms, they just replaced it, no questions asked. If you add more drain, the regulator will actually shunt less and run cooler. My question is how can I determine if it is a dead battery, bad alternator or bad voltage regulator? I charged the car for 1. Solid state regulator to replace mechanical regulator. The regulator/rectifier doesn't test right according to my Clymer manual or the Suzuki workshop manual, but I swapped it out and it made no difference. Aside from a dead car battery, there are other signs of a bad alternator that aren’t as, well, extreme. Description: 100% brand new and high quality Prevent over-charging and improve charging capability Easy to install, no installation instruction included With heat sink fins for better cooling. So that’s the normal operating range of system voltage. but when I shut it off the voltage regulater started smoking. UNplug the voltage regulator. The meter cables should be attached as before. So I replaced the alternator myself. What are the symptoms of a bad Alternator Voltage Regulator? Symptoms of a bad voltage regulator might include a dead battery, dim or pulsing dash lights, or erratic engine performance. This is usually caused by (1) a bad internal voltage regulator or (2) a bad electrical connection somewhere on the bike in the lead that provides battery voltage feedback to the internal voltage regulator (the voltage sensing wire) The replacement voltage regulator is our part# ESR025. btw, there's a updated part number for that stock regulator and they changed the location of the regulator I believe and stuck it on the steering neck. Another possibility is yes. com FREE DELIVERY possible on eligible purchases. Use a rheostat if possible. , a grounded stator will show good ACV output until loaded. That is a custom stator rebuild job and we will need your old stator part to rebuild it. Most of the electrical components will operate satisfactorily with a voltage between 12 and 15. Could this issue be attributed to a faulty voltage regulator, or possibly faulty diodes or maybe a bad stator?. Probable Cause: Voltage regulator bad and/or battery defective, permitting charging system to vary power outside of expected range. In this case, however, it looks like it drops too much. i turning really think it is the voltage regulator, because my system was turning on and off rapidly before the car crapped out. Voltage should not go much higher than 14. Adjustable Voltage regulator for early KZ400 and KZ650. I had the exact same symptoms as you described. com Motorcycle Insurance Motorcycle Parts Motorcycle Helmets Motorcycle Tires Buell Motorcycles Buell Forum » 1125 R Superbike Board » Stator/Voltage Regulator/Charging System subforum. Symptoms of a Bad Starter Solenoid. Voltage Regulator Adjustment Guide By A. Undercharging or overcharging the battery are symptoms of a faulty voltage regulator. These would also be required to stand off > 100V, and be capable of conducting ~25A. Regardless of the reason why your alternator fails, in most cases, the warning signs are there before an alternator fails. There should now be very strong charging as rpm rises. Let's learn the circuit functioning in details. Due to supplier quality issues, Harley-Davidson Motor Company has chosen to replace voltage regulators on certain 2012 motorcycles. Aftermarket Harley Davidson ® Regulator Rectifier made by Rick's Motorsport Electrics high performance Harley Davidson ® motorcycle parts. 2 out of 5 stars 3. In many alternators the voltage regulator mounts on the outside of the case and you'll replace it in a matter of minutes. It also recharges the battery. To test a voltage regulator, purchase a voltage meter. smell like it burn the cables - Answered by a verified Motorcycle Mechanic We use cookies to give you the best possible experience on our website. When I pulled the plug at the voltage regulator, the voltage went away across the cable and terminal. handy mounting hole for grounding and mounting, small and stylish. Free shipping on all orders at Parts Giant. "The Battery Voltage should NEVER Exceed about 14. or how ever you want. This problem is common with high mileage bikes. Possible Symptoms: Headlight dims or brightens excessively with RPM, headlight filament or headlight fuse blows intermittently, blinker and other bulbs give out unexpectedly. It controls all the DC voltage levels used to power things like the voltage regulator, CDI, turn signals, and starter solenoid. The voltage regulator is part of the alternator. This one is best for custom bikes or is great to replace the old stock regulator connections on your bike. What Are Signs of a Bad Voltage Regulator? Warning lights, unpredictable engine performance and dimming or pulsating lights are all signs of a faulty voltage regulator. 015-2500-00 - Voltage Regulator 31 Kawasaki $ 62. that all voltage sensitive equipment is turned off prior to starting the engine. Power variations damaging to various. Anything less or more indicates a bad alternator or voltage regulator. If there's extra resistance in the system somewhere, the sensors in the regulator get a false reading, and it tries to compensate for it. This could also overheat some wiring and start a fire or damage your alternator. Blow some compressed air through the vent holes under the fuelcap, with the hoses removed, and also through the hoses. One person said it's a bad battery, probably an open cell, 1 cell is bad. Not normal. I'm thinking bad ground is frying the regulators. 4 volts and it won't charge, more will boil it. When a voltage regulator is bad, the voltage output will fluctuate. spiky with a bad diode), the meter can display false results; in some cases, wildly wrong. 2 you have a problem. 1980 Johnson 140hp J140TLCSA I'm not sure if this is a post about the rectifier, battery amps/voltage, or something else. Without engine running registered 11.