Jump to content

05 Crf450 worn start

Recommended Posts

Ok so my crf450 won't start, it ran great yesterday at the track and went to go ride today and kicked it probably 20 times and got nothing, it's getting spark and fuel, I check the valve clearances and one was .004 which is still in spec but last time I check it was at .006, should I shim it again and see if it fires or should I be looking at something else?

Share this post


Link to post
Share on other sites

Usually they'll bump start unless you have a valve completely hung open.

It's getting a bright white crack of a spark? Sometimes they can make a spark outside the motor, but it won't be strong enough to light the mixture under compression.

And how do you know for sure it's getting fuel? Is the plug wet (which could also be your problem if so).

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:


×