Idling trouble

[muff]

I've got my 440ex with a 170 main, 42 pilot, and needle on the 3rd or 4th clip down

when I first start it up it will idle for maybe a minute but then it'll just sputter out and die, I've messed around with the idle adjustment but I cant turn it in anymore, I've also adjusted it at the throttle assembly with no luck

could it be the air/fuel mixture screw?

i just put a new plug in and my air filter and all that is good, runs awesome in mid and top so I know its not the main jet, and good down low, it'll only hesitate a very little bit if i'm just puttin along but I think thats cause of the low idle

any suggestions/help is appreciated

[ridered86]

how cold was it when this happened, was it running ok at southwick sunday? how does it die, does it sound like its flooding out? maybe there is a piece of crap in there. plus a overbore engine is not gonna idle perfectly either, but that shouldnt have anything to do with it. the only time my 416 struggles while idling is when its cold.

[muff]

it was doin the same thing on sunday... its really warm out right now (70 degrees), it'll start up after like 3 cranks and it'll go for a little bit maybe a few seconds then it'll sound like its not gettin enough gas

also when you hold a piece of cloth or your hand behind the exhaust when its running it gets really black and a little wet

[Chanman420q]

pilot jet? :confused:

[muff]

Originally posted by Chanman420q
pilot jet? :confused:

I already went up to a 42