Recent content by spstan

I want to soak the metering block of my Holley carburetor (4175) in a chemical dip for a couple of days to clean out the fine passages (idle circuit etc.) Talked to my mechanic and he suggested kerosene, clerk at parts store suggested vinegar, and the parts store had a gallon of "Gunk" parts...

Thanks for the link. Paul

I'm thinking the only way is to put one of those fiber optic cables down the tank (boroscope?) and look for dirt. Is that the only way? Paul

I keep having carburetor problems (dumping gas). Fuel pressure is ok. I will take off the carburetor and clean it (plus new needles and seats). But I'm starting to think the problem is the gas tank being dirty and dirt getting past the fuel filter and gumming up the needle and seat. What is the...

first sentence should have read "you know what Six? " Paul

You what SIX? You may be right after all. That small nozzle had about an inch of hose on the end of it and I initially thought nothing of it figuring it was just the remnant of a broken piece of hose. BUT after further inspection the one inch remnant (and I can supply a picture if anyone is...

CB; I don't know how long they've been unplugged. My next step is to put the car away for the winter (this stuff will make you crazy if you don't step away) and then in the spring try the propane gas method they posted on you tube. Anyone successfully use propane gas to find vacuum leak? Paul

six; the hose and the nozzle on the tree are of 2 very different sizes. Paul

Six; I was hoping that was the case but the small nozzle and the hose are of vary different diameters. Paul

CB; I'll cap the small nozzle on the vacuum tree but plugging the hose doesn't make sense cause it is going to the vacuum source not coming from the vacuum source. I can't see where the vacuum source is for that hose. Paul

I switched from thinking the intermittent rough idle on my 75 New Yorker (440 engine) was due to carburetor problems to thinking it was due to vacuum problems. I found 2 possible sources of vacuum leaks. The first pictures show the vacuum tree at the back of the engine where the power brake...

ok CB thanks for the advice. I put the car away for the winter so I've got time to think about it. The car did have a very smooth idle at one time (almost like fuel injection) so I'll do my best to get this back. Paul

After removing the catalytic convertor the car (1975 New Yorker, 440 engine, Holey 4175 spread bore) runs a whole lot better but still not as good as I like. The problem is an erratic (not smooth idle); sometimes surging sometimes chugging. I was thinking carburetor issues (sticky needle and...

John; that's not the same Holley I have on my car. Mine is the Holley 0-9895 that is sold by Holley Performance for $899.99 on E-Bay. Paul