03 wr 450 died ... need help!

A little background , I removed my battery and starter a few months ago due to starter meltdown. Bike started and ran great for a couple of months.

Last saturday I started it and let it idle for a minute to check oil level and it died,.. no big deal I knew it was low on fuel so I put it on reserve and kicked and kicked nothing. I checked there was lots of fuel inthe carb. I pulled,

the tank off, spark plug out ...no spark! I tried a new plug still no spark.

I checked all the electrical components as per the manual and everything checked out .. except the primary coil read 0.3 ohms on the meter and the spec is 0.08 to 0.1 ohms. But heres the kicker I put the battery back in and kicked it over there was spark :bonk: anyone out there have any ideas?? could the slightly higher resistance be causing the problem?

thanks in advance Todd :thumbsup:

Does it run now? Water in the stop switch?

Sounds like you disconnected more wires than just the battery.

Could be the coil IS bad. When you put the battery back in the bike ran off that, but I'd bet it wouldn't run long before the battery was dead. :thumbsup:

I just went through something like this!Took the bikes up to our riding area,took out the wifes bike,a wr250f and went to start it and nothing! It has NEVER not started,so I do the usual stuff ck the fuel,spark and find no fire!I played with it and never did get it to fire!Brought it home pulled the tank to ck the connections and all looked good!Put it back together and bam,it fired!Must have been a shorted wire somewhere but I never saw it! :thumbsup:

Get a CRF450X!!

Get a CRF450X!!

That guy has no Idea what he's talking about. That's not the problem at all. He must think he's some kind of mechanic. "Get a CRF X"!!!!! That's the worst troubleshooting I have ever heard. :bonk: Whatever valve boy!!!!! :thumbsup:

Get a CRF450X!! So you can grenade the transmission and have some really huge problems

yeah, good point.

Don't the stop switches cause troubles on our bikes?

I have read in other posts that if you remove the battery, and do replace it with a capacitor, you could possibly fry the regulator/rectifier... :thumbsup:

I am in process of removing the battery and starter from mine right now and have found the bike will not run without the battery or a battery eliminator. I tried all the tricks posted here about grounding the regulator and such, no good on my bike ,still no spark. some even said it should run without the battery, still no good. I am installing a battery eliminator in mine.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now