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Originally Posted by McClellr
Today I double checked the heater hose and found a small leak. Fixed that, but no change.
I tried pushing the rack through the front access (again) to see if that was sticking. It feels free and while it decreases speed as I push it in, it snaps back to the same position and speed.
I noticed one thing interesting. My 114mm shaft to the fuel pump is long enough to slightly open the rack when attached. When I pop it off, effectively closing the rack, the speed increases. This sounds like Im running rich at my 2000 rpm idle. I can also increase speed by opening the throttles with the pump disconnected. I might be able to force it down with more fuel but, goodness, what a way to tune an engine. Glad we killed emissions checks in Michigan.
It seems like Im just getting too much fuel. I dont have an A/F meter. I tried leaning the main fuel screw two clicks, with no change, but not richer. I can try that and I can get a meter, but I think I know I am way rich.
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None of the things you mention above help to diagnose of remedy your issue. The idle will DROP when you enrichen the mixture. Vac leaks lean the engine out, raising the idle.
Quote:
Originally Posted by McClellr
The throttle bodies all rest on their stops. The shaft to the pump (114mm) opens the rack slightly. But that isnt my problem. Ive run it with that disconnected.
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so adjust the length of the 2 crossbar drop links that attach to the t-bodies untill your pump is at it's stop.....it will not solve the problem but why not make it right?
You need a carburetor sync, a way to measure mixture, and you need to map your distributor curve.......If you do not do/get these things you will most likely never fix your problem unless you get professional help.