By taking the cooler off plug one hole on the oil side of the cooler. Then with a plate and a valve stem you can add air as you heat the cooler in a pan of water. You need to heat it to get it to leak. I had an oil cooler that would not leak till it was heated. Just put the container with the water where you can heat it with the torch or some such manner. DO NOT use PLASTIC as the container. Then apply air to see it bubble if it leaks. IF not, then probably the head gasket.
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Today's Featured Article - Engine Valves - Some Helpful Information - by Staff. Intake - On the intake stroke the piston moves doward, sucking in carburized fuel through the open intake valve. Exhaust valve is closed. Compression - With both the intake and exhaust valves closed, the pistons upward stroke compresses or squeezes the fuel into the combustion chamber. Firing - Ignited by the spark, the compressed fuel explodes and forces the piston downward on its power stroke. Intake and exhaust valves are closed. Exhaust valves and seats are exp
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