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Posted on Jul 27, 2010
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Loosing anti-freeze again, can it be another intake gasket????????? 2000 GMC Safari , 4.3L, AWD. Replaced the intake gasket about 18 months ago, 120,000 miles now.If it is the gasket do they make a better replacement gasket today?

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Bruce S

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If engine over heated check for water in oil pull oil dip stick check for oil an end of dipstick that is the color of coffee with creamer or change oil and check if contaminated with water / antifreeze same color as above possible blown head gasket. Another way to check is remove radiator cap warm engine if water / Antifreeze blows out (bad head gasket). one more way to check check cylinder pressure or wet spark plugs wet with water or antifreeze.
if driveway is wet near center of engine check heater hoses if not them check freeze plugs on side of engine block. I would guess you have already checked radiator and all hoses connected to it and engine. get engine hot check seams in radiator and radiator for pinhole leaks. last thing I can thing of is have your radiator pressure tested.

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Yea s it could be, try a different brand like felpro, also while the intakeis out have it checke for warpage, and follow the torques specs and pattern on reassembly

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  • Posted on Jul 27, 2010
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There is a Felpro gasket out that will solve the issue indefinitely, as long as the heads didn't warp a lot.

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