Re: IMG - '99 K2500 Burb - 170K

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Posted by Ben ( on 14:17:43 08/01/11

In Reply to: IMG - '99 K2500 Burb - 170K posted by Guy

Am going to tear down my 7.4L coolant system soon

It too is leaking and already have had the IMG changed, but think the newer gaskets better

Hoping it is in the hoses. Kinda sorta hear some high PSI spray from the heater valve just underneath
the TB assembly, but it is buried down there

It will only get worse and worse

IF you still have OATs in there, the O2 will become a accelerating catalyst for the etched
metal held in suspension by the 'A' of OATs (acid)

DO NOT use any sealer that has silicone, as it will find its way into the exhaust to poison the O2 sensors

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