i have a 99 chevy tahoe,still loosing antifreeze?

[rick]

i changed the heater core because it was leaking on the carpet.now i have a leak on the outside somewhere.i can see a puddle,but i cant see from where.it is not leaking out of any of the hoses,or around the intake.any common problems with these?

[Country Boy]

Antifreeze mixed with water evaporates very slowly and will leave distinctive "tracks" from the source of the leak. You need to invest in a pair of plastic ramps capable of holding 4,000 lbs crawl underneath and start by checking the following: The weep hole on the bottom of the water-pump input shaft housing. Check both heater and radiator hoses hoses. Carefully check the crimp that covers the big O ring around the radiator core where it fastens to the plastic expansion tanks on both ends. Check the radiator core itself. Ten years is about it for an OEM radiator. Check the head gaskets below the exhaust manifolds for leakage. Very seldom does the water pump bolts come loose but it's a possibility.

If you'd rather not get dirty any mechanic could pull an inexpensive *cooling system pressure test and find the leak in five minutes or less.

[Philips]

What is going on ? Now Cars from 1998- up are acting up Time to buy a brand New SUV my friends.