Jump to content

2009 CRF450X Wont Start And Aggressive Accleration

Recommended Posts

I recently noticed some visual issues related to the carb.  I took it off to clean it.  Made the mistake of separating the 2 mid body parts and tore the small gaskets internally doing so.  I was afraid that I had created more issues that I had started out to fix.  I purchased a used OEM replacement carb.  I swapped all the jets and needles over from the old carb.  

The bike wont start now.  Also, if I can get it started the bike just jumps as I tip the throttle in from a stopped position.

Looking for some suggestions on what to do from here to either fix this set up OR I'd like to ask for some suggestions for an alternative carb source.

Thanks,

Share this post


Link to post
Share on other sites

Float height: yes
Fuel screw has been a but if an enigma for me. I put an R&D adjustable screw on it (same as old carb). When I adjust it to where it has the best running RPM performance or won't start. So I back the screw out until it will start. That worked a few times but niw it doesn't seem to work that way anymore.

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:


×