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View Full Version : 400 will only run on choke? help



dan02400ex
04-08-2010, 02:51 PM
So just recently i put a hot cam stage 1 in my quad. It wont run right without the choke. It will still start without the choke but if you give it gas it just bogs out. Help me?

bobizzle
04-08-2010, 02:55 PM
did you rejet the bike, or do any other motor work to the bike. you may have a timing issue also. you may want to adjust your fuel ratio to a lil leaner, sounds like your running a lil rich.

clemsonteg
04-08-2010, 02:57 PM
Originally posted by bobizzle
did you rejet the bike, or do any other motor work to the bike. you may have a timing issue also. you may want to adjust your fuel ratio to a lil leaner, sounds like your running a lil rich.

Actually if it were a fuel issue and it only runs with the choke on it would be running lean not rich.

bobizzle
04-08-2010, 03:51 PM
yes it is true, i thought about it backwards... but yes it may be runnig lean... also, it could be a dirt filter, had that problem a while back also.

aDviSol2y
04-08-2010, 04:00 PM
I would say timing.

fearlessfred
04-08-2010, 05:07 PM
fuel prob. sounds like the clip for the needle came off the slide and the needle is sitting down in the main jet