Re: '41 super 8 stumbles on idle

Posted by Dan Marrin On 2012/3/19 11:25:22

Dave and Randy; I have filed the burr off the points, reset them to .017" and reassembled to do the compression test. I'm happy to say the vacuum gauge holds steady at 19 inches with an ever so slight quiver; so I think I'm OK on the vacuum front.

I read some other posts regarding rough idle and have seen Dave's suggestion regarding looking down the throat of the carb while idling. I see a fairly steady drip stream from the jets, so I've now got the carb off and am preparing to check the float, needle and seat for any abnormalities. I will report back.

Dave, perhaps you can briefly describe the process of adjusting the two idle screws with thw help of the vacuum gauge. Am I looking for an adjustment with each screw that yields the highest vacuum reading?

I plan to do this once I have gotten to the bottom of the float issue, and then I plan to go for the timing adjusment, once I have it idling smoothly.