#1
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'99 Cylinder 3 Misfire code help
The other day my altima started running rough. It would shake and rumble during idle and acceleration. I had a check engine light come and and with the code reader it told me I had a misfire in cylinder 3. The slot containing the 3rd plug had oil in it (which is what I assume caused my misfire). I drained the oil back down, and restarted it. The car now runs better but still has a "pending" misfire. I swapped the spark plug itself with a different one, and the misfire did not move along with it. So i concluded that the plug is fine.
My uncle suggested that I should check and see if it is the wire. In a little bit I am going to check the resistance on it...If that is fine then I will be really worried... MEANWHILE, the biggest issue is why is there oil in the sparkplug housing? Is that just a leaky valve cover gasket and when I replace that everything will be good? Or is that potentially a blown head gasket? The only other piece of information I have is that after I swapped plugs and ran it, the engine was smoking from the top and it looked to be coming from under the exhaust manifold. I realized it would smoke as the oil was being burned but is from under the exhaust manifold normal? THANKS! |
#2
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1. The oil inside the spark plug well (the tube) is likely caused by a worn out tube seal. To replace it just remove the valve cover as you have to install it from the inside. You might as well replace all. If you haven't do so, also install a new valve cover gasket and torque to specs. Oil might be leaking there and drips to exhaust piping.
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#3
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The 99 will only have two gaskets: one valve cover gasket and one spark plug tube gasket (all four tubes are incorporated into one gasket). If you get a Fel-pro valve cover set, it will also give you new grommets for the valve covers.
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code, cylinder, misfire, oil |
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