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
tj_mx104

'03 YZ450 Boggin at full throttle?

6 posts in this topic

Last Saturday, after hitting up some trials and off road riding, I loaded up my 450F and took it to the local track, after about 5 or so laps, anything past 3/4 throttle would bog and kill the bike out, it ran strong in low-mid power, but the top end would just bog! :blah:

We cleaned the air filter, checked oil, antifreeze, pulled the carb out and gave the throttle a twist and it was squirting gas out, so the bikes getting gas. Think this is a carb, accelerator pump, spark plug problem?

Anybody have any ideas what this might be? :doh:

Or if this has happened to them.

Btw, no the choke wasnt on when I was riding! :D

:thumbsup::worthy::busted:

Share this post


Link to post
Share on other sites
> Clogged air filter

> Water in the float bowl, or a bit of debris stuck in the main jet.

Ok, We cleaned the air filter, but havent tore into the carb yet, It about time for me to check the valves anyway, but thanks Gray! Ill Get on that and get right back to you.

Share this post


Link to post
Share on other sites
> Clogged air filter

QUOTE]

He said he cleaned the air filt . . . could it be over oiled though?

Share this post


Link to post
Share on other sites

Yes, if the oil is just dumped or sprayed on, and not worked into the foam. Another possibility in that regard is that if the engine was run hard before the oil had time to "set", some of it could have been pulled out and ended up blocking the main air jet, located in the face of the carb throat.

Share this post


Link to post
Share on other sites
Yes, if the oil is just dumped or sprayed on, and not worked into the foam. Another possibility in that regard is that if the engine was run hard before the oil had time to "set", some of it could have been pulled out and ended up blocking the main air jet, located in the face of the carb throat.

:thumbsup: I ALWAYS forget to let the engine wind down before i park it. So this could actually be it. How do you fix it or clean it out? And Airfilters are the one thing I've mastered :worthy: but this was happening before the air filter was cleaned, and when I pulled it, it only had a few spots on it where dirt had collected and some of the oil was still noticeable.

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