Check at the auto parts stores that borrow or rent tools to see if they have a cylinder leakage tester. You put each piston, one at a time, on top dead center on the compression stroke, then pump in compressed air through a gauge. The gauge will read the percent of leakage, and you can listen at four places for the source of the leakage. Tail pipe: burned exhaust valve. Carburetor: burned intake valve. Oil cap or dipstick tube: piston rings. Radiator bubbles: head gasket or cracked head.
They also make a whistle that screws onto the tester's hose that makes finding top dead center real fast and easy. You crank the engine by hand with a socket and ratchet, and as the piston slowly comes up on the compression stroke, the whistle will let you know you're there when it stops whistling.
Sunday, April 24th, 2011 AT 10:01 PM