Question about Motorcycles

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Just bought a new starter and battery for my custom bike it has a 113ci S&S motor no compression release. Battery has full charge when I hit the starter sometimes it turns over good and sometimes it acts like there is not enough battery juice to do so. The battery goes from 12.4 to 3.6 when I hit the starter button. Does the battery not have enough cold cranking amps or is the compression so hi it can't turn the motor over properly/

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  • Motorcycles Master
  • 43,836 Answers

Hi, James you have a bad battery or faulty charging system, now it is time to put on your Battery Priest Robe and prepare yourself for the Ceremonial "LOAD TEST" but before you begin, maintenance type lead acid batteries must be topped off with distilled Holy Water and all batteries must offer their terminals to the battery charging altar to receive the Sacred Infusion of Holy Ions until they have reached a 100% full charge of 12.5 volts or better. No matter how new the battery is, do not be lured into the false sense of "it's OK it has 12.5 volts" and not doing the test below, it could have little or zero "AMPERAGE" causing the battery to be faulty and must be replaced, AGM maintenance free batteries fall into this scenario more so than lead acid types.
Below is a quick and easy test to see if your battery is in good condition or needs Last Rites and must be replaced.
1. Make sure the bike is in "NEUTRAL"
2. Disconnect the spark plug cables.
3. Adjust voltmeter to DC volts 20-volt range
4. Place the voltmeter leads to the battery terminals.
5. Turn the run/off switch to run.
6. Turn the ignition switch on and press the starter button.
7. Watch the voltmeter as your engine turns over for 10 seconds.
8. If the voltage drops below 9.6 volts, the battery is faulty and must be replaced I "HIGHLY" recommend a maintenance free AGM battery they typically have more amperage for cranking.
9. Reconnect the spark plug cables if your battery is good and the bike starts ok, place the voltmeter leads on the battery and rev the engine to a steady 2500 RPM the voltmeter should read 14.5 volts DC anything in the 13's or less you have a charging issue that needs to be diagnosed and repaired.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below and for more specific information or questions at no charge please feel free to contact me at xlch@mail.com. Good luck and have a wonderful day.
How to Tell if Your Battery is Bad in 3 Easy Steps
Test Your Battery in 10 Seconds Reliable Load Test with Only Multimeter
http://racetechelectric.com/files/pdf/rte_troubleshooting_flow_chart.pdf
Harley Charging System Check
Checking your harley Stator charging system Insulation breakdown

Posted on Jun 26, 2017

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6 Suggested Answers

6ya6ya
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Hi,
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Posted on Jan 02, 2017

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SOURCE: Rectifier Problem

If the battery is charged, its charged..... redpoint5 is right, check the battery when hot... If the battery was not charging i would then look into the charging system, rectifier, etc.... Is it an air cooled engine? Sometimes engines can get a little warped when hot... My grandfather had Corvair vans as taxis that somehow always got overheated, after that they would never start hot. So, he had to leave them running all day.... If your battery is OK you may want to have a look at your starter.... Or, bypass the selenoid with a jumper cable and see if the starter kicks over fine when jumped directly...... That would indicate a bad or worn selenoid.

Posted on Nov 20, 2008

desayres
  • 10 Answers

SOURCE: 30 amp main fuse blows when the key is turned on.

Can be "nasty problem, for it can mean DEATH, if as you attempt traffic manouvre & it blows !-(As safety precaution , & this TIP would be useful to most all Bikers>Call to friendly POLARIS ATV Dealer & ask for Automatic Re Settable 20 AMP PROTECTOR ( tHIS FITS THE 500 sPORTSMAN A T V & as far back as the 350L 2 Cycle Firebreathing A T V ()Standard Equipment )-Wire that in from POSITIVE Supply on to your loom, & attch its earth ( Negative cable to NEGATIVE > - on Your Battery!--That done, procede to your RecRegulator Unit &Examine Likely "Melting of Delrin (Nyloc, White looking plastic connector plug to terminals of Rectifier/Regulator , Test Output from Alternator., Ensure ALL Eaths have been attended properly, by Unscrewing, & Shining through the Paintwork Refit, tighten & Apply Silicone Sealant ( So that when You "Power Clean" the Motorcycle You wont be "Degrading the EARTHS again!--Now Ride!--If the Loom Loom, near steering head happens to "Short out" The POLARIS Re Settable Fuse Link & Sealed in waterproof covering, will Re Set & then You get chance to further investigate at Your workshop!!Arm yourself with Voltohmyst , or Multimeter OOR mini pointer that can sense Current Flowing, check out ALL Swithes ( Disconnect rear brake light switch & front one by way of unplugging supply leads ( Just possible that You have intermittant short in one of them!--Did You happen to note IF You were turning slightly to Left or Right when Fuse Blew?--Well, look then for "Stress areas for wiring looms, as at Steering Head Stem region, Open the Sheath with Razor Blade & attempt to pull wires apart slightly , then EXAMINE RFOR>bare leads !---With Multimeter You could slowly "ISOLATE" components & IF You had reference to WIRING CHART You then could Painstakingly TRACE EACK LEAD & ENSURE it has no "LEAKAGE "--Best Of Luck & "StayUpright" -Des.

Posted on Jan 17, 2009

rockitman187
  • 2559 Answers

SOURCE: 1996 honda vf 750 magna

Sounds like the starter relay is going out.(It is located right beside the battery)


Please rate this a fixya

Posted on Jan 29, 2009

  • 200 Answers

SOURCE: key switch on, push ignition button & nothing happens

Check your ground wire to the frame. Clean and refasten....and find a new mechanic, no excuse for inferior workmanship...Sure sound like a ground problem !......Good Luck to you friend....Tim

Posted on May 10, 2009

CUTTER4LIFE
  • 15 Answers

SOURCE: Cannot diagnose source of electrical fault

TRY A TO BYPASS ALL SYSTEMS WITH A POSITIVE LEAD SHOULD WORK BUT YOU NEED AT LEAST 9VOLTS TO GET THE IGNITER TO EVEN THINK ABOUT LETTING THE COILS HAVE ANY POWER TO EXPLODE THE GAP POINT OF YOU'RE SPARK PLUGS SO GOOD LUCK

Posted on Jun 22, 2009

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Hi my 95 model vs commondore would not start,charged battery it wont windover and makes this clicking noise.


the clicking noise is from the starter motor not getting enough charge to wind over properly...check battery is holding a full 12 volt charge.
if commodore is manual - put it into third gear and get someone to help you rock the car back and forward (with handbrake off and ignition off of course)if starter motor is 'jamming' this can release it. ive seen many bush mechanics hit the side of the starter motor in holdens with a hammer to release it also.( with an auto this is your only option.)
other wise if battery is proven to be good - go to the wreckers and buy another starter motor.

Nov 27, 2012 | Cars & Trucks

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The bike would not start. It made a clicking noise when I hit the start button. I replaced the starter relay switch, the battery is charged, tried starting it and the motor will not crank over. The...


Even though you have charged the battery it could be bad and not giving you the cranking AMPS you need for high compression motors.
I'd try a new battery to see if it is the problem before changing the starter.

Sep 09, 2011 | Harley Davidson XLH Sportster 883...

1 Answer

Electric starter will not switch off, unsure why


Sounds like you had to disconnect the battery to stop the starter from spinning.
I've had that happen quite a few times and heres what i found and did to fix the problems.

1. I had an old american bike in the shop with a low battery. I didn't know the battery was
low when i hit the start button. The starter solenoid stayed engaged, and the starter kept
turning over the motor, I pulled the battery terminal off to stop the power to starter.

I check battery and it was low, i put full charge on trickle charge and then let it sit
a 1/2 hour before i tested it with the load tester.
It failed big time, dropped all the way to bottom of the scale under a load test

Installed a new battery and fixed the problem. The solenoid, start button, kill switch, key switch all works, it was just a low battery.

2. I had a customer call me because he ran out of gas, when he got gas he turned the bike over for a long time trying to fill the carburetors with gas,
Never hold the start button down for long periods of time. He did and the wires got so hot that the positive wire from the battery to the solenoid melted and stayed engaged.

It was an easy fix, replace the melted solenoid, and only hold the start button in 5 second intervals, allowing it to cool in between starts.
Once the bowls were full again and the bike starts, then it only takes about a second for the bike to start so you normally dont hold the start button for that long.

Hope this helps
Big Al

Jul 25, 2011 | Aprilia Ulysses XB12 XT Motorcycles

1 Answer

I have a 1997 FXDWG with a 124" S and S with compression releases. When I have 13 volts the bike will start. When it drops down around 12.5 to 12.6 it only has one chance to start then the starter...


I wouldn't think your problem be with the voltage regulator if the battery is being charged to 13 volts. The problem seems to be too big and engine with too small a battery. You have increased the size of your engine by quite a bit but you still run the same standard battery. Even with compression releases, you're turning a larger displacement engine. You need a battery that has a higher CCA rating (cold cranking amps). You may need to go to a "Big Boar" or "Odessy" battery. Twelve volts should be enough voltage but the current is the question.

Do this. With a fully charged battery, put the voltmeter across the battery. Read the voltage WHILE you start the bike. Does the voltage drop below twelve volts. If so, the battery is the problem. If not, the problem is somewhere else, maybe you need a stronger starter like a Spyke or something.

Good Luck
Steve

Dec 29, 2010 | Harley Davidson FXDWG Dyna Wide Glide...

1 Answer

1987 FXLR 80" 11-1 compression Evo Engine. S&S heads, barrels, and carb matched to a '91 clutch assembly and a Spyke starter. Have a continual problem of having the starter jack-shaft "fall" and...


The problem on your starter sounds like the "overrunning clutch" in the starter. The jackshaft cannot "fall" as the outer end of it is supported by the outer primary cover. It's engaging your ring gear, just not turning the engine. If the start spins, this means the jackshaft has been pushed into the engaged position because the starter will not spin until the solenoid plunger is in the full forward position. So, the only thing left is the "starter clutch". With a compression ratio like you have, you should be running compression releases if you wish to keep even a Spyke starter in the bike.

As for the electrical problem, it sounds like you've got a stator shorting out on you. I had one customer with a 90 FXR that was happening to. His bike would run fine for days and weeks but ever so often, it wouldn't start due to a dead battery and he'd just been riding it. We replaced the entire charging system. The only thing that we hadn't replaced prior to that was the stator. Now, if you wish to prove this, you'll have to catch the problem when it's not charging the battery. If you wish, you can purchase a voltmeter at any automotive parts house and install it on your bike. The battery should charge at 14.5 to 14.8 volts. Anything below that, the battery will slowly discharge. If you can, test the stator output. Unplug the connector at the cases. Inspect the connector to make sure the connections are in good shape up inside the plug. You need one those hold downs that keep this plug tight as well. Using a DVOM (Digital Volt Ohm Meter) put one of the meter leads on each pin in the case, put the meter in AC volts, 50 volt range. Start the engine and you should read about 25 volts or greater. If not, the stator is defective.

Good Luck
Steve.

Jun 12, 2010 | 1993 Harley Davidson FXR Super Glide

1 Answer

Starter stalls and locks up.


this is common with big compression V twins. The only suggestions i have, is to make sure your battery is new, as you want maximum voltage, mabey a bigger starter relay,( higher amp rating). Do a voltage check with engine running, make sure your charging system is good.

Jun 01, 2010 | 2003 Yamaha V Star 1100 Classic

3 Answers

My briggs&stratton ohv 17 hp electric starter will not turn over


I worked at a tool rental center while attending college and encountered the problem that you are having many times. The problem was caused be a variety of issues however can be determined by checking the following:
Worn starter motor bearings that would be indicated by higher than normal amp draw. Check for hot starter motor or hot cables.
Weak battery. The battery should be removed and tested for free at auto parts store. The battery should be replace every season to extend the life of the starter motor.
Belts or hydraulic pump that is not fully releasing from engine pulley or output shaft. Remove the spark plugs from the engine and tune engine by hand, it should turn rather freely.
Finally, compression release feature of engine is not working properly. Check engine service manual for proper adjustment of valves so that compression release will work. Finally check oil level for over full. Too much oil will raise compression. Good luck with your problem and email for more info.

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Ed, I think that when all is said and done you will find that you have a defective STARTER MOTOR. If the BATTERY is at full Charge, and it takes a Battery Charger added to the Battery in order to get enough current to turn over and Start the Motor. I suspect the Starter Motor is defective.
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