Quote:
Originally Posted by Repoman
Evidently I've still got a vacuum leak evidenced by the whistle . . . probably around that crappy seal on the DISA valve. Sounds like you've got a vacuum leak too. I wanted to get that fixed first before I started spending more money on hard parts. I was thinking of doing one of those smoke tests because I've been through every other hose on the damn thing and didn't see any problems.
|
One method of finding vacuum leaks is to use some WD40 spray or an unlit propane torch. You selectively spray the WD40 around possible vacuum leak areas, or hold the unlit propane torch nozzle, and if there is a leak in the area, you should hear a change in the engine speed when it sucks some of the WD40 or propane gas into the intake system.
Of course, since the vacuum leak you are looking for is after the MAF, do not spray WD40 into the intake system ahead of the MAF, as it could potentially foul the MAF.
And yes, I know this is a shade tree method and that hooking it up to a smoke machine is better, but this is a cheap alternative method that typically is quite successful in finding leaks.