Re: [GMCnet] Transmission vacuum modulator leaking? [message #327032 is a reply to message #326961] |
Mon, 11 December 2017 22:33 |
gibsongo
Messages: 116 Registered: October 2012 Location: Montreal West, Quebec, Ca...
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Thanks to all for your helpful comments.
But....(sigh)....looks like the diagnostic for an easy fix is incorrect. I pulled the modulator vacuum hose off the manifold and it was bone dry. Also, disconnecting it made no difference to the white smoke billowing out the exhaust pipe. The final "nail in the coffin" is probably that the low coolant warning light lit up after 15 minutes of idling.
So I guess I have to accept that Prestone is finding its way into the combustion chambers somehow. AAAARGH I guess there is no quick fix and that the problem is either a blown head gasket, or a crack in the block or a cylinder head.
Gordon Gibson
1976 23" Norris Upfit
Montreal West, Quebec, Canada
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