Yeah we don't really have access to ethanol free but a station here and there so it's 10-15 ethanol basically everywhere. I've never had issues with other rebuilds on other vehicles but this kit is from Shoebox central and I don't have experience with their products. The fuel would make sense since neither the accel pump or this surge were an issue for the first few hundred miles and they both sort of started at the same time.
Intermittent idle surging issues
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Yeah we don't really have access to ethanol free but a station here and there so it's 10-15 ethanol basically everywhere. I've never had issues with other rebuilds on other vehicles but this kit is from Shoebox central and I don't have experience with their products. The fuel would make sense since neither the accel pump or this surge were an issue for the first few hundred miles and they both sort of started at the same time.
Could you expound on this? The only suggestions I've discounted are ones where my fuel pressure was mis read as 5 psi.
Charlie ny
BANNED
I think what's going on is the power valve gasket is beginning to fail...try to recall if
the gasket you used had a triangular hole and was maybe .09 thick and somewhat soft.
This type will hold for awhile but soaks up fuel and acts like a wet sponge. Errant fuel
is drawn into the vac chamber and gobbled up as you drive at speed. At idle far less
demand plus max vac pulling errant fuel thru the vac port in the base. Check the
base to bowl gasket at the rear of the carb...if it is wet that is the tell tale.
Charlie
Float setting 1.350 with no gasket.
the gasket you used had a triangular hole and was maybe .09 thick and somewhat soft.
This type will hold for awhile but soaks up fuel and acts like a wet sponge. Errant fuel
is drawn into the vac chamber and gobbled up as you drive at speed. At idle far less
demand plus max vac pulling errant fuel thru the vac port in the base. Check the
base to bowl gasket at the rear of the carb...if it is wet that is the tell tale.
Charlie
Float setting 1.350 with no gasket.
drolston
Well-known member
Sorry I misread your 0.5 as 5. So, maybe just set pressure at 2.5.
A 94 float that is set too high or not sealing tightly will get over-rich or flood worse when stopped facing uphill. It could be as simple as a bit of debris or varnish stuck to the float needle. Disconnect the fuel line at the carb and blast the inlet to the carb with some carburetor cleaner.
If that does not fix it, maybe replace float valve, and set float a bit lower.
The float valve is new but it's the rubber tipped type so that has me a bit worried. The entire fuel system is brand new from tank to carb and the the entire car was taken apart and ultrasonic cleaned all there shouldn't be much to get into the needle but rather than Blasing the in there I'm going to pop it apart and see what I can see and re check the height.
This sounds pretty feasible, I plan to pull the carb off here next week maybe and see what I can find.
To update everyone I never did resolve this issue. I attempted to use the old power vallve parts as well as tinkering with various settings and nothing resolved the problem. Only does it once it has had time to really warm up so I'm still stock on it being something with heat.