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HEAD GASKET OR HEAD IS CRACKED. IS THERE A WAY TO LIMIT THE FUEL GOING TO THE ENGINE SO IT DOES NOT GET TO HOT THAT IT CRACKS THE HEAD OR BLOWS THE HEAD GASKET THIS IS ON A 1986 CHEVY CELIBERITY 2.5 L
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Probably a cracked cylinder head or block, or both. Or the head was warped and the head gasket has blown again. When the engine gets very hot the gasket expands, and after a few times it will not return to its original shape.
did you have the head checked for cracks/leaks while it was off? it can only be head gasket, cracked head or cracked block that allows the engine oil to mix with the coolant. you could also see if combustion gas is in the coolant (should never be)
could be just head gasket and bad exhaust manifold gasket (coolant leaks past head gasket into exhaust port then leaks out of exhaust manifold gasket) or it possible that head is cracked too Only way to know for sure is to remove head and inspect it
You have water entering one or more of your cylinders. Could be a blown head gasket or a cracked head. Especially if you got the engine very hot recently.
There are several reasons for a head gasket to fail,but trying to adjust the fuel will only lean out the motor. The only way to solve this problem is to install a new one. There are products out there that say they will fix blown head gaskets and cracked heads but have yet to try any.They run around $50.00 and require you to drain and flush the cooling system.You can only run the solution in pure water...no antifreeze. I guess it would be worth a try as this is a lot cheeper than replacing the head gasket.I will be trying this in about 4 months on a 1994 Monte Carlo that has oil in the antifreeze and antfreeze in the oil.It is winter now and running straight water now is not a option.
There is no radiator cap, the Lanos has what is called a "sealed cooling system", popular on newer model European cars and most Asian models, even some of the latest US made cars. You can squeeze and release the upper radiator hose repeatedly to "pump" some of the air out/water in.
The engine has to be leaking water somewhere. It could be a small leak that only leaks under pressure (when the car is hot) and the water is evaporating as fast as it leaks out. This kind of leak can be very hard to find! I had this problem on my daughter's 2001 Lanos until today, when I found the leak. A heater hose burst today while she was getting gas, luckily the car was stopped! It had been using about a tank full of water every month (about one quart or liter), but could find no leak. I suspected a leaking head gasket or cracked (which could be your problem), and was preparing to take the head off when she was on Christmas break from college. I'm glad that hose burts!
A leaking head gasket or cracked head is hard to detect. Most of the time there will only be a small leak when the engine is hot, and the small amount of water pulled into a cylinder is vaporised as the engine runs. There will be no water in the oil unless there is a large leak. Pull the oil dip stick and look under the oil fill cap. If there is a tan looking substance on either one there is water in the oil and you definitely have a cracked head or leaking head gasket. If it's just the gasket you're lucky -- the gasket will usually only leak if the engine has been run very hot (boiling over and then run a bit), and then the head will either crack or warp. A warped head can be repaired, but must be taken to a machine shop for repair. A machine shop can also check a head for cracks, as the cracks are usually too small to see, and usually only open and leak when the head is hot (normal engine operating temperature).
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