HEADS UP!!!

Site upgrade in progress... Core site functions are working, but some non-critical features/functions will be temporarily unavailable while we work to restore them over the next couple of weeks.

Please post any bugs you encounter, but before you do, check to see if it's already listed.

Thanks for your patience while we work to improve the community.

Sign in to follow this  
Followers 0
GONE1445

2001 yz426 wont start after crash and winter storage

5 posts in this topic

Last summer I had an unscheduled dismount and smashed my left side radiator, I got the new radiator on no leaks, tried to start it and gas started leaking out the overflow so I took the carb off and cleaned it also replaced the needle and seat, bike still won't start has a new plug and I checked it has good spark, if I let it sit with the gas on for a min with choke it will hit a little bit but after that nothing

Share this post


Link to post
Share on other sites

Did you take the fuel screw out when you cleaned the carb? If it's an aftermarket one that requires removal to remove the float bowl make sure it's been properly reinstalled and the small tip on it is still intact.

1 person likes this

Share this post


Link to post
Share on other sites

First thing to check is that you haven't done something as basic as to install the float upside down (you don't have to tell anyone), or incorrectly set the float level, and that nothing is binding the float. 

 

It's pretty common for varnish deposits to partially clog the pilot jet.  The orifices in these are extremely small, usually around .016-.018", and just a film dried on the sides can reduce a #45 to a #30, making the bike nearly impossible to start and run.

 

http://www.thumpertalk.com/topic/681801-bike-wont-start-dont-know-what-to-do/#entry6879695

Share this post


Link to post
Share on other sites

Yeah I do have a tusk fuel screw, it was intact, I think once I get some more free time I will remove the carb again and take all the jets out maybe I missed something and yes the float was right side up and moved freely

What is a good starting point to have the fuel screw at I checked it before I took it out and it was a tad past 2 turns out, I usually have to adjust it a tad as it gets warm and humid or cools off

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

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
Sign in to follow this  
Followers 0