Hello all, new to the forum, thanks for being here to help.
I was unaware that cranking the engine with the seacock open was a bad idea. My late model A4 was not starting after this winter, turned out to be bad points. In the struggle to diagnose the problem I spent a few days cranking the engine. Now the engine is running, but I have constant white vapor coming out the exhaust. My original fear was a blown head gasket, and that is still a concern. My question is, could the white vapor be from excessive water in the exhaust? And, how do I drain the water from the exhaust?
A little more history, and things I have discovered.
The wrong thermostat was installed by the previous owner, and I have been using it for the last 3 years.
The engine has had problems with overheating and blowing white vapor in the past, but I have been quick to throttle down (and the temp drops quick) or shut down the engine.
I recently did a compression test. It showed weak compression in all the cylinders, dry 60-65 psi each, wet 70-75. What strikes me as odd is the consistency. No one cylinder is low or high, so I wonder if my tester is off.
Over all the engine starts easily, and runs smoothly. It doesn’t cough or sputter when I throttle up or down quickly, but over long use ( more than 2 hours) it will start to over heat and blow white vapor. At that point I can only putt along at barely an idle (2-3knts).
P.S. I will make an introduction on that thread.
I was unaware that cranking the engine with the seacock open was a bad idea. My late model A4 was not starting after this winter, turned out to be bad points. In the struggle to diagnose the problem I spent a few days cranking the engine. Now the engine is running, but I have constant white vapor coming out the exhaust. My original fear was a blown head gasket, and that is still a concern. My question is, could the white vapor be from excessive water in the exhaust? And, how do I drain the water from the exhaust?
A little more history, and things I have discovered.
The wrong thermostat was installed by the previous owner, and I have been using it for the last 3 years.
The engine has had problems with overheating and blowing white vapor in the past, but I have been quick to throttle down (and the temp drops quick) or shut down the engine.
I recently did a compression test. It showed weak compression in all the cylinders, dry 60-65 psi each, wet 70-75. What strikes me as odd is the consistency. No one cylinder is low or high, so I wonder if my tester is off.
Over all the engine starts easily, and runs smoothly. It doesn’t cough or sputter when I throttle up or down quickly, but over long use ( more than 2 hours) it will start to over heat and blow white vapor. At that point I can only putt along at barely an idle (2-3knts).
P.S. I will make an introduction on that thread.
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