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I got my bike done tonight but it's not getting any spark. I checked the plug gap, changed the plug, checked the ground, tried another CDI (new) and still no spark. The engine is new so the stator should be good.

I only have access to a coil from a '98 CR250, do you think that would work to confirm if the coil is bad?

Any suggestions on other things to check?

Thank you.

Unplug the kill switch.

I just tried it Bob but still no spark. Any other suggestions?

Thank you.

Check all wiring and I mean ALL connectors, the chances are its something stupid but you need to start from the magneto and check (unplug and replug) every connector.

britincali wrote:Check all wiring and I mean ALL connectors, the chances are its something stupid but you need to start from the magneto and check (unplug and replug) every connector.

I agree, it's gotta' be something stupid like that. I mean, everything on this friggin' thing is either new or like-new.

To top things off tonight, I accidentally hit the release on the FMF stand the bike was on with my foot and couldn't catch the bike in time. Put a small dent in the pipe, bent the brake lever and somehow managed to brake the clutch cable at the end by the perch.

I'm so pissed off right now I could piss fire!

Thanks for the help guys!

How about unscrewing the plug cap and cutting 1/2" off the coil wire?

what was done to the bike?? if ya painted it did you sand off where the coil mounts to the frame??

The bike is an AF so no painting. I checked and re-checked all the connectors, cut off 1/2" from the coil wire and still nothing.

I'm turning the lights out in the garage just in case it's a weak spark but there's nothing.

is it a known good magneto?

I bought the engine new so I "guess" it's good. The only things I can think of now are ground or coil. I've loosened/tightened the ground several times and I can't recall ever having a coil go out so I'm a bit lost at the moment.

I did go ahead and pull the stator/magnetto out to make sure a wire wasn't cut, etc, and it all looks fine.

Thanks.

I've been trying to call you are you still up?

I bet it is because you did not post any pics of your build

eyesky2002 wrote:I bet it is because you did not post any pics of your build

That must be it.

I called it a day after that last post Mike.

Thanks!

unless you have heart problems...grab onto the plug and kick it over (lightly at first)...that will tell you for sure if you have some spark...

You should never kick the bike over without have a "path to ground" for the spark.

Doing so can mess up the system, as the high voltage spark is trying to go somewhere, if there is no gap to jump at the plug.

AlisoBob wrote:You should never kick the bike over without have a "path to ground" for the spark.

Doing so can mess up the system, as the high voltage spark is trying to go somewhere, if there is no gap to jump at the plug.

X2

The sparkplug wire going in to the coil was a little loose so I tightened that, no spark. I took a jumper and made sure that the coil/CDI was grounded, no spark. Checked all the connections again, nothing.

I checked the stator again for any clipped wires, etc, it all looks great. One good thing is that I can smell gas while I'm kicking it over so I know that part should be good.

I'm grounding the plug against the head and then giving it a quick push trough by hand, that is the right technique, isn't it? It's been a while since I've had a bike that wouldn't start.

bust out the manual and check the resistance on the stator coil and ignition coil. I'd tell you what the resistance is supposed to be, but I've got an '86 ign, so mine has 2 stator coils.

CR500R-G3 wrote:
I'm grounding the plug against the head and then giving it a quick push trough by hand, that is the right technique, isn't it? It's been a while since I've had a bike that wouldn't start.

I dont know if doing it by hand its gonna spint it fast enough to saprk, get a new plug and have someone else next to the the bike verify spark while you kick it.

Try some of Brits favorite " Huff- Juice".....

Ok, cool, I'm taking the bike over my buddy's tomorrow so I'll get him to check for spark while I kick it over.

Thank you!

britincali wrote:

CR500R-G3 wrote:
I'm grounding the plug against the head and then giving it a quick push trough by hand, that is the right technique, isn't it? It's been a while since I've had a bike that wouldn't start.

I dont know if doing it by hand its gonna spint it fast enough to saprk, get a new plug and have someone else next to the the bike verify spark while you kick it.

I second what Brit said. This happenend to me on my last Af build and I figured out I just wasn't spinning the motor enough to make power. You also might have your throttle cable not just right and that's what's causing you to smell gas and it not start. Last time I went to Jawbone I installed a new cable the first morning I was there and it would not start. I even got pulled around by a half ton and still nothing. I finally figured out that the new cable wasn't ceated all the way and the slide was hung open just enough for it to flood out. Keep us posted.

pimp559 wrote:

britincali wrote:

CR500R-G3 wrote:
I'm grounding the plug against the head and then giving it a quick push trough by hand, that is the right technique, isn't it? It's been a while since I've had a bike that wouldn't start.

I dont know if doing it by hand its gonna spint it fast enough to saprk, get a new plug and have someone else next to the the bike verify spark while you kick it.

I second what Brit said. This happenend to me on my last Af build and I figured out I just wasn't spinning the motor enough to make power. You also might have your throttle cable not just right and that's what's causing you to smell gas and it not start. Last time I went to Jawbone I installed a new cable the first morning I was there and it would not start. I even got pulled around by a half ton and still nothing. I finally figured out that the new cable wasn't ceated all the way and the slide was hung open just enough for it to flood out. Keep us posted.

Yeah, Brit was definitely right. I had my wife check for spark while I kicked it over and she said it was sparking. She said it looked weak but I'll have my buddy look tomorrow to make sure.

Thanks.

I have yet to see a CR with a spark that din't look weak, they definatly aint 'big fat blue' ignitions.

Mines pretty good, not great..... but good.