CYLINDER HEAD GASKET LEAK REPAIR PROCEDURES - DIESEL. Pontiac LeMans 1981

For 1990-2009 cars

# CYLINDER HEAD GASKET LEAK REPAIR PROCEDURES - DIESEL

QUESTIONS REGARDING RECESSED OR PROTRUDING PRECHAMBERS IN THE CYLINDER HEAD HAVE BEEN RAISED. DEALER TECHNICAL BULLETINS 81-T-34 AND 81-T-11 STATE THAT PRECHAMBERS MUST NOT BE RECESSED INTO THE CYLINDER HEAD OR PROTURDE OUT OF THE CYLINDER HEAD BY MORE THAN .004". THIS MEASUREMENT SHOULD BE MADE ON BOTH SIDES OF THE PRECHAMBER WHERE THE GASKET SEALING RING CROSSES THE PRECHAMBER AND CYLINDER HEAD. IT DOES NOT MATTER IF THE PRECHAMBER IS COCKED A LITTLE BIT SO THAT YOU GET A DIFFERENT MEASUREMENT ON EACH SIDE. BOTH SIDES, HOWEVER,MUST BE WITHIN THE TOLERANCE.

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