North American Turbocoupe Organization



Question about vacuum leak and test
Keith Nubel Offline
Posting Freak
#1
If I disconnect the vacuum line from the bottom of the upper intake and plug the ports, does this elimanate all of the potential vacuum leaks except for the intake system?
1985 TC
Reply

Pete D Offline
Administrator
#2
On the 87-88 the 2 port fitting near the top of the upper is the supply for the FPR and the vacuum tree. You can remove and plug those.
The port on the bottom side of the upper is the PCV system which just recirculates already metered air (blowby mostly) as long as there are not any leaks in it due to rusted out oil seperator or leaking PCV hoses. You could briefly remove and plug it for testing, just be sure the breather on the valve cover can flow both ways to vent the crankcase and don't drive it hard so as to avoid pressurizing the crankcase. Blocking those 3 ports will eliminate all potential vacuum leaks not directly related to the engine itself.

[This message has been edited by Pete D (edited 09-09-2005).]
Pete Dunham


Reply

Keith Nubel Offline
Posting Freak
#3
Thanks Pete. I should be able to do this in the driveway since the problem is the idle.
1985 TC
Reply





Users browsing this thread:
1 Guest(s)



Theme © iAndrew 2018 - Software MyBB