supercharger vacuum leak really isn't?
All of you supercharged owners might be interested in the following:
While troubleshooting and trying to find the cause of a rough idle on my supercharged '92 SSE, I tested for vacuum leaks by spraying injector cleaner around the base of the supercharger, and although no idle change was observed when I sprayed it at the base gasket on the pulley side of the supercharger, where it is reportedly prone to vacuum leaks, or while I sprayed it around the rest of the base gasket, a BIG change was observed when I sprayed it around the butterfly valve shaft attached to the boost bypass valve - the engine stumbled and almost stalled so I stopped spraying there.
I first thought I had found a vacuum leak, but just for kicks I sprayed it on the same area of my '93 SSEi which has a smooth idle, and the engine stumbled on the '93 also.
Conclusion: It seems this area of the supercharger normally leaks air. Have any of you ever tried this?
So my hunt for the cause of the rough idle continues...
'99 Bonneville SLE, white, 112,000 miles
'02 Park Avenue Ultra, white diamond pearl, 88,000 miles