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2003 Chevy S-10 4.3L V6 coolant leak on top of engine

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Published on Mar 27, 2010

Slow intermittent leak. Puddle on front of intake manifold. Seems to appear after engine has cooled down for awhile. I am thinking that it is the thermostat gasket. I put Bar's Leaks powder in the system in March, and I saw the puddle return in December. I replaced the thermostat, thermostat seal, and thermostat housing. I think it is probably fixed now. Hopefully the Intake manifold gasket doesn't leak. The truck only has 46,000 miles.

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