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Engine Problem
I have a problem that I was hoping one of the experts could help with.
1987 951, 120k miles
Here is what happened:
- While driving, noticed a small sound, which I thought was a small exhaust leak (sputtering, faster with rpm change)
- sound got a bit louder just before squealing from engine, and loud knock developed. Car still runs, but poorly
- shut down engine ASAP, and towed home
- I checked the obvious stuff, as the squealing noise sounded like a belt
- All rotating components were fine and spun by hand and smoothly - alternator, water pump, a/c compressor, turbo, p/s pump, etc all were fine
- The lower balance shaft was slightly harder to turn, but nothing drastic
- CAM was fine
- I thought maybe the loud banging sound could have been a valve, but when I removed the head, all looks fine
- Crankshaft seems to turn fine, with all pistons moving up and down smoothly
- I only thing I found was that one of the ports on the intake boot was blown off
Could the large hole in the intake boot by itself possibly cause these symptoms?
Anyone experience symptoms like these?
Kevin
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