5.7 1997 k2500 coolant leak

[birchhatchery]

thanks

 

[mattillac]

Similar to what Scrufdog mentioned, my 1999 5.7 had the coolant leaking slowly from the intake gaskets, the coolant seemed to flow downhill towards the rear of the engine and then drip down and burn off on the hot exhaust/crossover pipe.

I never really saw any coolant on the ground but often smelled coolant burning and had to refill the overflow can every now and then.

Its was kind of tough to see the fluid run down the back of the block there, a close look with an inspection mirror while the engine was warm and coolant filled did the trick.

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[great white]

If you're running green coolant, just grab a black light bulb (UV light bulb) and follow the trace back to the leak.

If not, you can buy an additive that floresces under black light. Even green coolant shows up better with the dye/additive.

Or you can buy/rent/borrow a coolant system pressure tester and find it sitting in the driveway with the engine off....