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Warrens69GMC · 03-01-2017, 01:47 AM

Areas i've found vacuum leaks when all new rubber vacuum line were new-

pcv valve grommet
valve cover gaskets
egr valve
vacuum advance canister
vacuum reserve tanks
booster
carb mounting gasket

03-01-2017, 01:47 AM	#4
Warrens69GMC Registered User Join Date: Jan 2003 Location: Safford,AZ Posts: 3,613	Re: 305 engine issues Areas i've found vacuum leaks when all new rubber vacuum line were new- pcv valve grommet valve cover gaskets egr valve vacuum advance canister vacuum reserve tanks booster carb mounting gasket