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mallard ducks mallard ducks is offline
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Join Date: Jul 2008
Location: Toronto
Posts: 117
overlooked vacuum leak sources

I've been replacing all vacuum lines, hoses, fittings, boots, intake manifold gasket, etc. on my 944S

Everything's done but I still have a decent vacuum leak (exactly the same as before doing everything - no improvement, no worse)

The only thing left that I can think of is the fitting in the plastic intake pipe for the AOS breather hose has cracked all around its base where it mates with the pipe.

I would have replaced everything else anyway, just as general maintenance on a 21-year old car, but my experience may save someone else a lot of aggravation...

...don't forget about checking for cracking/seperation of those hose fittings on the plastic intake pipe.
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Warren
'87 944S
"Tubes sound better"
Old 11-25-2008, 08:44 AM
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