9.5 very rough idle

[MHBill]

I just did a carb kit on my motor. And it finally fires up and runs great except I feel that it runs pretty rough when I get to an idle speed I would feel comfortable shifting into gear. It seems to jerk and vibrate a lot to what I would consider a smooth idle. Soon as it gets a little gas though it seems to run like gangbusters.

I set the low speed needle 1 1/2 out and fiddled with it from there but have not really seen any improvement.

Any ideas?

Thanks

60 PSI on both cylinders. new points condensers, impeller,thermo
'68 9.5hp sportwin
9288E

 

[Rick.]

Re: 9.5 very rough idle

Are you saying that by moving the lean/rich knob you don't notice a difference? If the answer is yes I would recommend you reclean the carb. very well. It takes a small spec of debris to make it run that way. Also, make sure you clean every orifice with compressed air from each direction after cleaning. Best of luck. Rick.

 

[tashasdaddy]

Re: 9.5 very rough idle

check your spark. they will run on one cylinder.