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Have a shop perform a leak test with a halogen detector.
I also want the same answer.
compression test or leak-down test.
First thing would be to change the oil and filter. Perform a compression and cylinder leak down test on each cylinder, to determine how, and where, the water intrusion occured.
Here are several answers and opinions from FAQ Farmers: * McDonalds? I mean, c'mon, where else would you get an engine leak test besides from a mechanic? Unless your cousin Louie has the equipment. * A leak down test requires a special fitting, which screws into the spark plug hole, and an air compressor. Anyone who has this equipment can do a leak down test, although understanding the results requires knowledge and experience.
The point pressure leak test, also known as the Valsalva leak test
Assuming this vehicle is fuel injected, you can do a leak down test.
It could be any of the following: * A sticking or burned valve, * A damaged head gasket * A damaged or worn piston If it's a damaged or worn piston there should be quite a bit of "blowby", meaning that there will be pressure inside the crankcase when the engine is running. If the head gasket is damaged there should be a leak into the crankcase (blowby again, or a leak into the water jacket, in which case you won't be able to keep coolant in the radiator. If it's a sticking valve or just about anything else that causes poor compression, you can perform a "leak-down" test to find out where the compression is leaking. Since you know it's the #5 cylinder, perform the leak down test on that cylinder and see where it's leaking... then you'll know.
There Is A Cooling System Pressure Tester Tool Kit. It Will Run Around $ 100.00 or More. Have A Good Radiator Shop Test It For You. Call First Most Will Be Able To Do This, Also They Can Give You Good Advice About The Leak.
have a leak down test done its more reliable,
The point pressure leak test, also known as the Valsalva leak test, measures the amount of abdominal pressure required to induce leakage