engine problem

[gnccracer450]

got an 05 450r... got fresh port and polish from rossier stage 2 hc and new topend... it will only run when i stab the gas to start it and have it idling high...turn the idle down and it won't start or run... when it is running the headpipe is glowing, but i have a 200 main jet and a 52 pilot so no way it is lean....the timing is right... ANY SUGGESTIONS ARE APPRECIATED

[86 Quad R]

deffinately a lean condition on the pilot circuit. there are several possibilities as to what could be causing this. a misadjusted float level, a clogged pilot jet or even a clogged slow jet (located in the ventura of the carb or a clogged pilot circuit itself.

[400exrider707]

Sounds lean to me as well. Where is your fuel screw set at, and what needle are you running and what clip is that set at?

[gnccracer450]

i checked slow jet...cleaned carb like 30 x's lol...checked intake boots...don't know how to adjust floats.. not sure what needle but it is set at 3rd clip...there r 5 clips total..fuel screw set at 2.5

[gnccracer450]

never seen anything like it....even if it was lean you would think that it would run..even if it ran like ****... bs is what it is

[86 Quad R]

are ya cleaning the carb with cleaner and compressed air? the manual tells ya how to set the float level. :cool:

[cataway]

Originally posted by gnccracer450
i checked slow jet...cleaned carb like 30 x's lol...checked intake boots...don't know how to adjust floats.. not sure what needle but it is set at 3rd clip...there r 5 clips total..fuel screw set at 2.5
is this the stock carb your talking ? you took the carb a part when?

[gnccracer450]

yea stock...and i took it apart like day before yesterday...it's at the shop now...their saying it maybe a valve...but i just had new ones put in with new seats and an angle job...so who knows..

[BLK400EX]

are sure that your valves are shim correct it sounds like the intake valves have tighten up, my 05 450r had a similar problem, and that was it, the vavle tighten up so bad that it would idle and you had to give it gas to start,

[gnccracer450]

i took to shop...they said that my valve job was done wrong and one of them was staying shut...so crossing fingers and hoping for best lol....thanx alot

[gnccracer450]

Originally posted by BLK400EX
are sure that your valves are shim correct it sounds like the intake valves have tighten up, my 05 450r had a similar problem, and that was it, the vavle tighten up so bad that it would idle and you had to give it gas to start,

you were right man...valve stuck shut and it was shimmed wrong letting air in and not wanting to start...new seat shim and angle job they said it runs great......GOOD JOB and thanx again