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geezer#99 · 02-19-2011, 10:38 AM

Try swapping your vacuum advance over to a full time or manifold vacuum source. Your engine will speed up of coarse. Then turn your idle down which closes off the throttle plate in the carb. The throttle plate being too far open at idle causes the deseiling effect.

02-19-2011, 10:38 AM	#3
geezer#99 Registered User Join Date: Aug 2009 Location: Bowser Posts: 13,785	Re: Hard shut off on 4.1l engine Try swapping your vacuum advance over to a full time or manifold vacuum source. Your engine will speed up of coarse. Then turn your idle down which closes off the throttle plate in the carb. The throttle plate being too far open at idle causes the deseiling effect.