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Another SU Question 120-130

posted by  twombo on  Mon Oct 18 08:24 CST 2004
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last visit: Wed Oct 8 17:27 CST 2014
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Tweaked my SUs according to previous suggestion and they work well. Thanks all!!

Fall check is good. Butterflies centered up nicely and close freely. Idle screw is turned in sightly over 1 full turn. Each jet is adjusted about 11 flats.

New issue now. After running the car for 10 of 15 minutes and shutting in off for 20 to 30 minutes, I find that on restart. It starts right up but races for a few moments. If I switched the ignition off and back on 3 of 4 times the engine rolls back to a normal idle. Sort of like there is some fuel pooling in the intake manifold after shutdown that gets burnt on startup.

If I let the car sit for an hour of more, no racing willl occur.

Float level is correct and I am using GrossJets. I use Marvel Mystery Oil in the dashpots.

Is it possible that the oil is too thin and providing insufficient damping?

Or:

Is it possible for fuel to be admitted through the carb after shutdown due to engine heat?

Your thoughts?






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posted by  twombo  on Mon Oct 18 08:24 CST 2004 >


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