Jump to content
Antigravity Batteries Giveaways: Winners Announced! Read more... ×
Sign in to follow this  

2010 Rm-z 250 unkown problem - Need Help!

Recommended Posts

so here's all the details i can give.

i did a top end rebuild on the bike (piston and rings) - Valves were booked into the bike shop the week after, during this week i ran the bike in. (it was raining the day i was home and able to ride).

Took the head back out and sent it into my local dealer and when i put it back into the bike - she was a no-go'er!- cam timing is perfect, my mechanic came round and checked it out for me, I replaced the coil, and spark plug, and still have spark. i kick the bike and i get a backfire every so often, and it shoots a hell of a flame!

just wondering if anyone has had the same problem? or knows how to fix it?

Cheers.

Share this post


Link to post
Share on other sites

Think about it. If it backfires-it got spark and it got fuel. Timing is off. Could be bad can chain tensioner,cams reversed,sprocket flipped,valves not shimmed right,piston/rings in wrong,leaking valve seal or seat issue. For the engine to fire everything must happen in proper sequence.if you have Skype let me know and I can see if I can help.

Share this post


Link to post
Share on other sites

My bike did the exact same thing with a leaky valve. A compression test will tell you if you have a valve/piston and rings issue.

Share this post


Link to post
Share on other sites

Magneto was not charging from previous overheating issue fuel pump wasn't putting pressure behind the injector? Didn't sound right to me but that's what the mechanic said, and it works now so I'm happy.

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

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

Reply with:

Sign in to follow this  

×