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Aporte original por: Anthony Wessal ,


Normally Blown Head Gasket Symptoms are:

* Coolant leakage to the oil compartment
* White smoke from the exhaust pipe
* Overheating engine
* Bubbles in the coolant overflow tank or radiator
* White milky oil
* Huge loss of coolant with no visible leaks

If you guess having gas in oil, the first thing to check is the fuel pressure regulator. Now, remove the vacuum line attached to the regulator and check if there is any raw fuel, there shouldn't be. A vacuum can be applied to the regulator and it should hold vacuum without leaking off.

Now if the regulator is in good condition, then there’s a chance of poor engine performance, which can cause replacing head gaskets, only if you observe overheating troubles.

'''Other possibles reasons could be like:'''

'''Insignificant amount of gas:''' The piston rings are seals placed tightly against the cylinder walls, to prevent the gasoline from flowing into the oil. But they don’t provide perfect sealing, hence a slight amount of gas will find its way into it. So it is advised to change oil as and when required.

'''Excessive Fuel:''' When a fuel injector is stuck open, the fuel will flood out. Gasoline will surely get into the oil, in this case. If the fuel pressure in your car is too high that may cause gasoline to get into the engine oil. So check if the float in the gas tank is rising the way it should be rising or if it needs an adjustment. Check whether the oil level might be really high, or else this can cause problem.

'''Check Piston Rings: '''If you realize too much gas is entering your engine, you should replace the piston rings and replace the oil.

See if these help your problem, if not, investigate other possibilities of fuel leaking into the oil. Try for fuel injectors test, and check the spark plugs also. Else you can always take help of expert mechanics like Eurobahn BMW MINI Mercedes-Benz Audi.