How Do You Perform A Compression Test On The Engine In A Mercury Cougar?
Over the years, the engine in the Mercury Cougar has undergone many changes. Whether the car contains one of the smaller 4-cylinder engines or a more powerful V8 engine, it is important to keep it running properly. Performing a simple compression test diagnoses common problems such worn cylinder walls, valves and piston rings. Prepare for the compression test by warming up the engine. If you perform the test while the engine is cold, the results will not be accurate. Turn off the engine and disable the ignition system to avoid electrical shock during the test. Remove all of the spark plugs. If the Mercury Cougar contains a 4-cylinder engine, there will be four spark plugs. A V6 engine has six and a V8 engine eight. Insert the compression tester into one of the spark plug holes. Crank the starter to rotate the engine. This builds compression in the cylinder, causing the needle on the gauge to jump. The last number that it jumps to is the compression number for that cylinder. Write down
