Question about 1998 Chevrolet C1500

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Radiator fluid getting into oil changed radiator no visible gaskets on intake or head leak no change in preformance other than loss of radiator fluid has engine cooler to radiator and trans cooler to radiator no visible leak around water pump heater works no fluid smell in passenger compartment

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You might not notice a change in performance for a while, but the head gasket is blown and the water seeps down there at night or when it is cool. It won't do it when it is running because it gets burnt. Check your exhaust for steam, and get a compression check done, it will tell which cylinder is blown. I just had a car blow on me, ran fine for many miles, would eat coolant though. I never let it overheat, but then one day, kaboom, all done, wouldn't run again. The hole in the gasket was smaller than these letters I'm typing, and the one cylinder that blew was squeaky clean, from the steam. Hope this helps.

Posted on Oct 11, 2010

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This is probably a head gasket problem and not an oil cooler problem.

The oil cooler is fairly easy to test.

Remove the cooler from the engine but do not disconnect cooling lines and then pressurize the cooling system. You can use a radiator test tool to put pressure on the cooling system and look for leaks. If it leaks, replace it.

You may also be able to bypass the oil cooler altogether if it leaks.

The head gasket is another story.

Get a 1/4" pipe to spark plug fitting and put a male air coupling fitting in it.

Then you can charge the cylinders with air from your compressor.

Make sure each cylinder that you test is at top dead center so that the valves are closed.

If air bubbles into your coolant, you found your problem.

If air leaks out your intake you have a bad intake valve

If air leaks out your exhaust you have a bad exhaust valve etc.


If you find this useful, please take the time to rate it.

Tim

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