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#1
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hydrocarbon in the coolant v/s pressure test
To cut my long story short, I had a overheated Honda Civic 95, that had
its "Check Engine" light come on and also some *white smoke* from under the hood. I got the car checked at one car place, lets call this place A, and they checked for Hydrocarbons in the coolant and the number (i am not sure whay the number is) was really high and they came to conclusion that my head gasket needs to be replaced and they also found that my radiator needs to be replaced. Now, since they did not have expertise to change the head gasket, they waved me good bye suggesting that I should go somewhere else and find some help. That really got me concerned and I got to another car place, lets call this Place B. Place B opened my cars hood and said, this needs radiator change. And I agreed. And told him about *diagnoses* from Place A. Place B said, we do not care what Place A says, All I see is a radiator change and I will start with that. Once I am done with that I will test to see if we need a gasket change or not. I said fine.... We did a radiator change, thermostat and stuff and was told that I am all set. I said, well so we do not need gasket change. Place B said NO. We don't. Place B added, that we did a pressure test on the engine it passed it. So, you are all set... I am not sure what to make of it.... I guess the bug question in my mind is What test is more conclusive (hydrocarbon in the coolant v/s pressure test)? If anyone can help me with it, that be great.... |
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#2
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Vishal Pahuja wrote:
> I am not sure what to make of it.... just drive it and keep an eye on the gauge, and on the coolant level in both the new radiator and the overflow bottle. > > I guess the bug question in my mind is What test is more conclusive > (hydrocarbon in the coolant v/s pressure test)? > If anyone can help me with it, that be great.... id trust a pressure test before id trust an HC test. its possible for coolant to get contaminated. |
#3
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Wait till the radiator coolant is cold - with the engine off, remove
the radiator cap and make certain the coolant is up to the neck. Start the engine - if there is an exhaust leak into the coolant - the coolant will jump out of the neck of the radiator. You can tell approximately where the exhaust is leaking into the exhaust by removing the plugs and looking for coolant contamination. Revving the engine up will make it jump higher. If the head gasket is gone - chances are good you have a warped head and it takes someone who really knows what they are doing to "fix" a warped head by milling or any other method to keep the head gasket from blowing in the future. |
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