1992 LT1 Vacuum Leak?
Le Mans Master
Joined: Mar 2001
Posts: 7,999
Likes: 14
From: Life is just one big track event. Everything before and after is prep and warm-up and cool-down laps
Cruise-In III Veteran
Cruise-In IV Veteran
St. Jude Donor '12
Remove the covers and look at both sides of the intake.
Driver side has lines to egr selenoid (then to egr), ASR, Cruise control. Mine has an additional line to the opti, thats because I replaced it. A larger line to the brake booster and what looks like a C that goes to the PCV.
Passenger side has a couple of small lines to the FPR and someplace else.
Large hose to the valve cover. Thick to thin hose for the evap canister selenoid, then it goes to the evap canister.
HTH
Driver side has lines to egr selenoid (then to egr), ASR, Cruise control. Mine has an additional line to the opti, thats because I replaced it. A larger line to the brake booster and what looks like a C that goes to the PCV.
Passenger side has a couple of small lines to the FPR and someplace else.
Large hose to the valve cover. Thick to thin hose for the evap canister selenoid, then it goes to the evap canister.
HTH
Racer
Joined: May 2009
Posts: 421
Likes: 2
From: van buren ar
i recently went trough this on my 92,ended up being the brake booster.when looking for a vacume leak i like to plug all the vacume lines,and reconnect them one at a time till i find which one makes the problem come back.
