the same code come up and the car is still running the same do i need to replace that coil boot or is that a major problem
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2002 Nissan Maxima Question: I change my spark plug I had a DTC P0306 the rear plug on the left side had oil
backyard tech August 28, 2011, 17:32Master
The oil you see is because the seal that seals the valve cover is leaking. You need to replace the valve cover gaskets with the spark plug seals in the valve cover gasket set. If you don't replace it soon you will also have to replace at least number six coil.
ReplyRev searl, August 28, 2011, 17:40Rookie
if i change the valve cover gasket will this solve my problem with the way the car is running and the boot was lose around # 6 plug
Replybackyard tech, August 28, 2011, 18:50Master
The oil is taking the spark to ground hence causing a misfire. If you can just purchase the coil boot then buy it. First you have to eliminate the oil leak. Once you stop the oil leak you should be able to clean off the oil on the boot and it should be fine.
Answer #2chinasinoy August 29, 2011, 04:51Journeyman
If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.
If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule. I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone badIf there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.