Mechanics

POSSIBLE COOLANT LEAK

1998 Chevrolet Blazer • 4WD Manual • 105,000 miles

1998 blazer possible leak from under the right side. No leak on hoses or radiator, liquid is clear to slightly yellow. Car does not over heat and air conditioner never used. Just had fuel filter, olf, and air filter replaced. No problems til after this was done. What could be the prob?
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LITA1970
August 14, 2011.



Check to make sure you don't have a leaking freeze plug and check for headgasket leaks. What I recommend is this. First, go to a parts store and rent a pump to check the cooling system. With the engine cold, remove the rad cap, install the hand held pump, pressureize the system and check to see if you can see where the leak is coming from. If you can't, there is a dye you can put in the system. Drive the vehicle then check with a black light for leaks. The dye will glow.