spark problems 01 rm250

rjl250 · Dec 10, 2004

What's going on guys? Here's my problem. I was having problems getting my bike to spark on the kick. I read the voltage on the stator, and got about 16v. The manual says you're looking for 20v or more. I bought a new stator(sans pickup coil), and still no spark. Now I am getting about 14v. I called the company and they said that was normal. I am getting less voltage out of the pickup coil than I should, so I ordered a new pickup. The stator I got was from electrex in oceanside, CA and has leads for a light. I was wondering if A:the weak stator could still be the cause, and B:if I can splice the lighting leads into the main ignition lines to get the voltage closer to specs. I don't want to wind up with a weak spark that doesn't fully ignite my mixture.

Oldschooldeathwish · Dec 10, 2004

stupid question but did you change the spark plug? Ive also seen where the spark plug cap is messed up

reelrazor · Dec 10, 2004

NO. You cannot use the lighting leads as supplemental voltage for ignition.

Does the manual say you are looking for 20+VAC during kickover? If so, are you using a meter that records and stores the voltage peak? Your 16V and 14V readings may just be what you see on the meter because it doesn't respond fast enough to 'catch' the extremely brief pulse which may likely be several volts higher.

Wait for the pickup coil you have on order.

I am assuming you tested the spark coil/wire and like said above, changed spark plugs?

With Suzuki, the spark coils have pretty much always been the weakest link.

rjl250 · Dec 11, 2004

I did check the spark coil and the plug wire. I tried a new spark plug and also tried to read voltage from the spark plug wire to the block. The bike will start up if you push start it, but you don't get any voltage at all off a kick. I followed the tech manual exactly for the electrical troubleshooting, and the only problems I got were the weak stator voltage as described above, and the low pickup coil voltage. All my resistance checks on both the stator and cdi were good as well as the wiring ohmage. You get absolutely no spark from a kickstart, and I've also tried using my drill with a socket and spinning the flywheel without the spark plug installed to get a steady voltage reading from the stator. I'm currently in Arizona, but my wife says the pickup is waiting for me at home. Thanks for the info on the lighting coil. Can you tell me why you can't use it?

reelrazor · Dec 11, 2004

It isn't very common at all but you may have some or part of the flywheel demagnetized. This can happen by striking it or heating it. Long term storage can also make the fields take a 'set' and be insufficient to generate.

You say electrex said the voltage you are seeing is 'normal'. They have a good rep and seem to know what they are doing so I would take their word for that.

You say you are getting "less voltage than I should out of the pickup coil..". That is why I said to wait for your new one. They are hall effect switches and their 'trigger' or voltage and intensity rise proportionally with speed. You aren't seeing enough when you test it, and so may not be supplying the cdi with enough to trigger spark on kickover.

As far as lighting coil for ignition, unless the lighting coil is the exact same in turns of windings its' frequency will not match what the cdi is looking for/needs. The frequency may well be high enough and with a large enough current to fry the cdi immediately. It will also be roughly 180° out of phase.

rjl250 · Dec 14, 2004

Thanks a lot for the info. I haven't really messed around to much with stators with lighting coils. I guess I'll have to wait till I get home to see if the pickup coil is the problem. Hopefully I didn't just waste another $65 on something that's not bad. I should have just spent the extra $80 and got a stock stator from suzuki.

spark problems 01 rm250

rjl250

Oldschooldeathwish

reelrazor

rjl250

reelrazor

rjl250

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