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if there is oil in the coolant system it could be a crack in the intake, a ruined intake gasket, a cracked cylinder head
replace lower intake
You can usually Clean Crack out of your system by just drinking water. then you will have to go to the bathroom and then the crack will slowly come out of your system. It is what i learned from my health teacher.
The metal disk part of one of the valves (intake or exhaust, usually the exhaust as it is under the most stress in operation) in one of the engine's cylinders has cracked. This allows gasses from the cylinder to escape, causing that cylinder to be "weaker" than the other ones, increasing engine vibration. If the crack is in an exhaust valve (as it usually is), unburned hydrocarbons in the escaping gas will cause the car to fail emissions testing. If the crack is in an intake valve, very hot escaping gas can cause a type of "backfire" in the engine's air intake system.
If it is a gm 3800 you need to replace the upper intake. It has a crack in it.
Crack in intake or exhust, or belt glazing- Check all the intake and exhust bolts.
Ruins it.
The starter motor is located under the intake manifold. It's not as bad as it sounds to replce though. The first one I did took me about two hours, but I can whip them out in a hour now. Lots of wires and hoses that you need to make sure you keep track of and re-assemble properly. Be very careful of the MANY fule lines that run on top of the intake. They will crack easily.
what can I use to clean my system for cocaine. the test if tomorrow
water pump or thermostat housing crack
pandi puddy
no