Skip the auto shop - Our mechanics make house calls

Q: Oil buildup in boot

asked by on

The number two cylinder has a bolt and half of a spark plug in the wire boot and threaded half in engine head. Number three cylinder has oil buildup in the boot recessed area, requiring the selected valve cover gasket replacement.

A: You are already on the right track with kno...

You are already on the right track with knowing that your Toyota RAV4 will be needing the valve cover gasket replaced. Oil should never enter the spark plug tubes as this can cause damage to the ignition system, mainly to the spark plugs and the ignition wires. Regarding the broken spark plug, this requires the proper tools and the precision of a professional to extract the broken spark plug from the engine without damaging the vehicle’s cylinder head. Because of the seriousness of the repairs, I highly recommend enlisting the assistance of a certified mechanic to come by and service your Toyota. They will have the experience and tools needed to perform the spark plug extraction as well as replace your valve cover gasket. I also recommend you have them replace all of your spark plugs as well as ignition wires. This will ensure that you don’t have any issues with your ignition system and will help keep your RAV4 running smooth.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Save up to 30%

Get a quote

What others are asking

Q: Engine turns over but won't start

The ignition coil, ignition control module, or distributor rotor can all fail without warning, leading to a no start. The reason I am leaning towards an ignition system issue is that the vehicle was running before you went to the...

Q: Exhaust gases in coolant

Exhaust gas in the coolant usually means one thing a blown head gasket. If you look at the dipstick and see a milky substance in the oil then you have definitely blown your head gasket. I would recommend taking the...

Q: Constantly overheating 2003 Dodge Durango

It seems like you have an air flow issue or air in the system. The fan clutch should spin with a small amount of resistance when the engine is cold. With the engine up to temperature, the fan clutch should...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...