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W30post · 11-24-2007, 05:59 PM

Guys,
I have changed intake gaskets on my car recently and it has the best idle I can ask for since I started driving it. The question I have is why do I have a high idle after a short wide open throttle run? If I go through all of second gear and let off, it takes a while for it to settle down. Is this the ported/ manifold vacuum switch on the intake causing the timing to be held high? What else could cause this?

Carb has been completely gone through and has no binding. The throttle shafts have been drilled and bronze guides installed for good consistent sealing. The distributor is a new unit and the mechanical advance is not sticking. I cannot say if the vacuum advance is sticking as I have not checked.

Any guesses?

11-24-2007, 05:59 PM	#1 (permalink)
W30post Member Join Date: Oct 2007 Posts: 33	High RPM after WOT Guys, I have changed intake gaskets on my car recently and it has the best idle I can ask for since I started driving it. The question I have is why do I have a high idle after a short wide open throttle run? If I go through all of second gear and let off, it takes a while for it to settle down. Is this the ported/ manifold vacuum switch on the intake causing the timing to be held high? What else could cause this? Carb has been completely gone through and has no binding. The throttle shafts have been drilled and bronze guides installed for good consistent sealing. The distributor is a new unit and the mechanical advance is not sticking. I cannot say if the vacuum advance is sticking as I have not checked. Any guesses?