01 quad runner 500 ignition issues
#1
01 quad runner 500 ignition issues
Over the weekend our 01 quad runner 500 4x4 started having a problem and I would like some opinions before I start ordering parts. The bike ran fine one day then the next day it wouldn't rev all the way, only to about half throttle. first I thought it was a gas issue so I drained the float bowl and cleaned it and added some sea foam and fresh gas to clean it out. After trying some other things the problem would come and go so I started looking at electrical connections. I had the throttle pinned in fifth gear and the engine ran like it had a rev limiter and wouldn't break 30 mph. Then I turned the ignition switch to the lights on position and it jumped up to 50 mph, like a switch I could hit the "rev limiter" by turning the key from run to run with lights on. Should I just buy a new ignition or could it be the coil or voltage regulator?
#2
Sounds like the voltage regulator. It will fry your CDI and any other electronics if you don't get it fixed right away. Check by putting a voltmeter across the battery with the engine running. Start raising the revs, you should not get more than 14.5v. Over 15v and you need a new regulator.
#3
#4
#6
Putting this in a post about overcharging Suzukis is not the best place.
Anyway, either one of your new parts is a dud or there is a wire with a high resistance between regulator and battery. I once did the changing stator because a new reg didn't fix it, on a Foreman 500, right pain with having to take the rear end off to get at the alt case, and still no charge. I had tested the red and green wires with a voltmeter first and got 12v but, after fitting the new stator and still no charge, checked the red and green at the regulator using a high wattage 12v test lamp, got a very dim light. Then found a hairline crack in the insulation on the red wire and, on pulling the wire, found about 1/8" of wire inside had turned completely to verdigris. Have always tested those wires with the test lamp since then, as you need to check you can get power through them, not just volts.
Anyway, either one of your new parts is a dud or there is a wire with a high resistance between regulator and battery. I once did the changing stator because a new reg didn't fix it, on a Foreman 500, right pain with having to take the rear end off to get at the alt case, and still no charge. I had tested the red and green wires with a voltmeter first and got 12v but, after fitting the new stator and still no charge, checked the red and green at the regulator using a high wattage 12v test lamp, got a very dim light. Then found a hairline crack in the insulation on the red wire and, on pulling the wire, found about 1/8" of wire inside had turned completely to verdigris. Have always tested those wires with the test lamp since then, as you need to check you can get power through them, not just volts.
#7
Sounds like the voltage regulator. It will fry your CDI and any other electronics if you don't get it fixed right away. Check by putting a voltmeter across the battery with the engine running. Start raising the revs, you should not get more than 14.5v. Over 15v and you need a new regulator.
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Bleach
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05-16-2021 08:23 AM
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