Apr 042015
 

I recently replaced a faulty valve cover gasket on above mentioned vehicle. I drove the car approx. 20 miles and parked it. The next day, it would not start. The car is definitely getting both fuel and fire. Removed the plugs to find oil running off of the plug threads on cylinders # 2,3,and 4. Cleaned the cylinder walls with carb cleaner, installed new plugs and wires, and the car started and ran perfectly fine. However, once again, after a 20 mile drive, I shut the ignition off and the car would not restart. Again, I took the steps of removing the plugs,cleaning them ,spraying carb cleaner in the cylinder walls, re-installing the plugs, and low and behold, the car started. Every time I take it for a drive, it will not restart, and I have to repeat the same scenario. Only thing I have found is a broken hose going from the throttle body to the valve cover. PCV ? Could this cause blowby to get into the cylinder walls by bypassing the rings ? Any help is greatly appreciated.

  2 Responses to “1999 Mitsubishi Eclipse 2.0 litre non turbo”

  1. YES. PCV = Positive Crankcase “Ventilation”. Also, do the spark plugs go down through the center of the valve cover, and if so, did you replace the seals that go around the spark plug holes…. recheck your work… I am guessing the car ran fine before you worked on it?

    The oil can and will leak into and around the spark plugs and foul them out.

  2. Yes, the car ran perfectly fine before this. I am going to try replacing the valve cover gasket again and clean the plugs. I used permatex gasket sealer only to hold the gasket in place upon installation. I did not place any sealer on the bottom (flats) of plug seals. I did however, run a small bead of sealer around the surface where the valve cover bolts to the motor.Should I have not used any sealer ? I can see how that may create an increased thickness in the gasket, and create a gap which would not allow the gasket or plug seals to seat properly, and cause oil to get into the plug holes. I performed a fuel pressure test, and got a reading of 50psi. Should be sufficient enough to start the car. It’s all beginning to make sense now. This would explain the gas smell and flooding effect of the motor.1) If oil is leaking past the plug seals and getting onto the plugs, the car will “not” start. 2) With number 1 being the case, and the car in “fact” getting sufficient fuel, the gas would cause the car to flood out due to excessive amounts of oil on the plugs not allowing them to spark and burn off the fuel. If the fuel isn’t burning it will set. That makes sense. Right ? Do you recommend a specific cleaner to remove the permatex before installing a new gasket, and once again, should I use a sealer at all with this type of gasket ? Thank you. You have given me hope.

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