The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

**franks72** · 04-24-2010, 08:36 PM

The valve has a spring in it to keep it closed ,when you pull vacume it will open ,if the valve is good it will stay at that point, if it is bad it will not stay at that point it will drift back closed..

04-24-2010, 08:36 PM	#21
franks72 Junior Member Join Date: Mar 2005 Location: Wilmington DE Posts: 218	Re: Throttle Mashing hesitation? The valve has a spring in it to keep it closed ,when you pull vacume it will open ,if the valve is good it will stay at that point, if it is bad it will not stay at that point it will drift back closed.. __________________ 72 cheyenne super BB402 TH400 Air Tack Tilt Posi P/S P/B AM/FM 12.96 @ 101.82 mph 60ft 1.82 12.39 @111.33 With a 180 shot nos 69 Camaro RS http://s94.photobucket.com/albums/l117/fdelcoglin/ email fdelcoglin@hotmail.com