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

SoCalSlaughter · 04-23-2014, 06:36 PM

Does anyone know what the engine vacuum should be pulling at idle, at sea level? Im trying to solve a puff from my exhaust, and checking the vacuum for a possible intake leak, but cant find anything on the web for what the factory vaccum reading should be. At the moment the engine is pulling 18psi at operating temp in park. Thanks!

04-23-2014, 06:36 PM	#1
SoCalSlaughter Registered User Join Date: Aug 2010 Location: Ventura Posts: 151	Engine vaccum - 90' Suburban Does anyone know what the engine vacuum should be pulling at idle, at sea level? Im trying to solve a puff from my exhaust, and checking the vacuum for a possible intake leak, but cant find anything on the web for what the factory vaccum reading should be. At the moment the engine is pulling 18psi at operating temp in park. Thanks!