Making a revision. (edited to include the following in the original post)
Quote:
3. Pop the rivets holding the metal bands to the ribbed metal part of the No-hub coupling.
4. Keep the metal bands, but throw the ribbed metal part of the No-hub coupling in the garbage.
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I couldn't get a good 360 degree seal with the ribbed metal band pinching up the rubber. Removing the ribbed metal part did the trick. I charged the piping to 10 psi and found no air leaks from the tester to the intake manifold.
The oil fill cap was leaking air, however. Air is either:
- Getting by the S/C shaft oil seal and into the crankcase.
- Getting by the PCV valve, and I need to remove the hose going to the PCV valve and plug it.
Testing again with the tester in place AFTER the S/C will determine which is going on. I will retest tomorrow, this time with the oil cap off.
This tester was derived from an old DSM boost leak tester:
Boost leak test how to with boostpro.net tester - DSM Forums