PDA

View Full Version : whats wrong with my r


trx250rider
08-02-2008, 12:04 PM
when i bought this r it had carburetor issues...the main thing was when i hit fourth gear, it would lose all power...it was a stock carb and the guy who had it before me had a 138 main and a 35 slow...my first impressions were that it was jetted way to low so i started back to the oem jets thinking that it may have not been getting enough fuel...after i put them in, still the same problem...i bought a 36mm duncan carb put it on and now it is even worse...it will not idle unless i turn the adjustment on the choke wide open, and now i have no power in any gear..this motor was just rebuilt so i dont think its in the motor...the new carb is jetted with a 160 main, 55 slow...im no expert by no means on these carburetors so if any has had this problem or has any ideas please let me no..i also tried moving the clip position down...
my88r
08-02-2008, 04:09 PM
what shape are the reeds in..
trx250rider
08-02-2008, 06:31 PM
brand new v force carbon fiber
my88r
08-02-2008, 07:26 PM
carb slide has enough free play??

the starting your on the pilot and that 55 should be fine..
trx250rider
08-02-2008, 08:44 PM
what do you mean the carb slide have enough play...how would i know?
kiesta00
08-03-2008, 01:41 PM
too lean on top end?
trx250rider
08-03-2008, 06:24 PM
today i took the head off and check the piston and cylinder walls..there wasnt one scratch and the piston looked like i put it in yesterday...i looked at the reeds and they also looked brand new...after it ran for about 5 minutes it ran awesome..like it was a completely different bike...but still not alot of topend power
JohnBeton
08-04-2008, 07:15 AM
may be a dumb question, but what sprocket setup are you running ?
trx250rider
08-04-2008, 08:06 AM
not sure exactly ill check tonight and post later
trx250rider
08-04-2008, 04:27 PM
13 front 39 rear....is that about right
Fear250r
08-04-2008, 05:51 PM
That's stock gearing for the 86-87.
represent618
08-05-2008, 12:36 PM
power-valve gummed up with exhaust oil, or have damaged o-rings? as in not allowing it to open and close freely?
trx250rider
08-05-2008, 12:58 PM
stock cylinder...i dont think its a power valve
represent618
08-05-2008, 01:12 PM
Hmm, I thought I read that it had a Updated Sleeve on it, oops! :D
trx250rider
08-05-2008, 01:25 PM
no..i was just saying that i took the head of and the sleeve and piston were in very good shape