Automotive experts talked about the dangers of getting oil into the wells of the spark plugs. Also, the technicians described in detail how to fix the leak. It is noted that oil leakage is one of the consequences of engine seal wear. Marketplace Avto.pro, where you can find Likvi Molly oil and other well-known brands, figured out the problem.
Causes of the problem
Ingress of grease into the spark plug wells indicates damage and / or wear of the well oil seals and valve gaskets. Traces of smudges can be seen on the top or side of the engine after removing the spark plugs. If a large leak occurs, oil will spill into the area around the wells. Ignoring the problem is fraught with the following consequences:
- Decrease in motor power;
- Increased fuel consumption;
- Fast failure of candles, coils and high-voltage wiring;
- Spark breakdown;
- Difficulty starting the motor.
The Check Engine light may come on. If oil leaks during winter, it will be especially difficult for the driver to start the engine. According to experts, the rapid wear of engine gaskets, followed by oil leakage, indicates a high pressure of crankcase gases. In this case, leaks are also observed through the front oil seals of the crankshaft and camshaft, the valve cover gasket.
The problem is eliminated by changing the oil and cleaning the breather. If she did not dare, the driver should check the cylinder-piston group. When the piston rings are worn, gases may burst and pressure build-up, even with normal crankcase ventilation.
Getting rid of oil leaks
Even an ordinary car enthusiast can handle the steps listed below. You will need a set of keys, a screwdriver, a well puller, gloves. Here’s what to do:
- Remove the valve cover;
- Dismantle the intake manifold;
- Remove the ignition, disconnect the crankcase ventilation pipe;
- Dismantle the spark plug wells with a puller.
The candle wells are sealed with glands, so they need to be replaced. A budgetary and less reliable solution to the problem is to apply an anaerobic sealant to the joint, as well as the nearest space. The old sealant layer must be completely removed.
Inspect candles and high voltage wires. If before the above work they gave a stable spark, clean from oil and carbon deposits, and then reinstall. When reassembling, be sure to follow the tightening sequence for the valve cover fasteners.