#$%@ Carbs... Options

[yeahmag]

Not getting enough fuel to one cylinder at idle. Did all the normal tricks:

* checked idle jet (clean)
* ran idle mixture screw in and out
* removed idle jet and mixture screw and blew out
* removed idle jet and "plugged the hole" with finger (this should give me a *very* rich mixture, only got down to 15:1 or so)

So, it's time to pull the carb. I suspect something is blocking the mixture screw area... Of course I have a race this weekend.

Sigh.

[tscrihfield]

Not questioning your ability to inspect the Jets, but have they been ultrasonic cleaned? If the car has sat for a period of time it is normal to run into fuel sediments and or debris/deposits that settle and clog these up. They often will appear to be clean when you look through them in the light and what not but you magnify them and it becomes clear .. or unclear for that matter. I had replaced these all the time when I ran dirt cars... No matter what kind of filtration I used it seemed to haunt me. So I feel your pain.

Also, while your in there do a quick look over your emulsion tubes for any sediments, deposits or debris. These can often cause issues as well, not often but it happens.

I hope this helps. Please do post what happened when you figure it out though, I am curious as to what it is. I will add it to my notes for further reference.

T