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1993 Ford Explorer Other - Engine
Question: removed cylinder heads engine burning antifreez found heads cracked replaced heads new heads not used or rebuild. reassembled engine start run engine still have white exhaust smoke and pushes coolent out of radiator not knowing how hot the engine got the first time the owner said replace the block. I then installed a reman short block, makeing sure every thing was assembled correctly, started engine let it run about 30min topping off the radiator the coolent would rise and pour out of the radiator and still having white exhaust smoke witch could be do to the cracked heads. pulling the spark plugs they are black, also removing the upper intake the ports are wet with gas. please help im at a loss here.
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Technican: Hi;
I own a 1992 explorer that I replaced the heads on. You will have to let it run for afout two hours before it will quit smoking. The catalytic converter is probably soaked with antifreeze. As far as the coolant coming back out of the radiator, it will do that until the thermostat opens up. Just fill the system and put the radiator cap on. Leit it run and once it gets up to operating temperature shut it off and let it cool back down. Then take off the cap and top of the radiator. .
Owner: Les, are the black spark plugs and wet intake ports normal? not all ports are wet this is in the upper intake.did cylinder leak test air coming out of intake ports some worse than others.
Technican: Hi;
The spark plugs been black means a fuel injector is sticking. When you did the cylinder leak test did you make sure both valves where close? If you are still getting the air, most likely the valves are not sating properly. I have had a few bad experiences with reman engines. . Here's How To Get Guaranteed Solutions In Minutes
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