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Mike V.
Mike V., Mitsubishi Mechanic
Category: Mitsubishi
Satisfied Customers: 25006
Experience:  25 years experience on all makes and models. Nissan and Subaru factory trained.
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I removed the ignition wires from the spark plugs, going to

Customer Question

I removed the ignition wires from the spark plugs, going to change the spark plugs, but noticed oil in the wells. I could not get the oil removed and decide to get the right tools and put the ignition wires back one. I only loosened one spark plug but put it back in securely.
Now, there is a miss fire. I have taken off and put back on all the ignition wires several times. Still miss firing. Wondering if i damaged an ignition wire in the process. How do I trouble shoot this? ,I removed the ignition wires from the spark plugs, going to change the spark plugs, but noticed oil in the wells. I could not get the oil removed and decide to get the right tools and put the ignition wires back one. I only loosened one spark plug but put it back in securely.
Now, there is a miss fire. I have taken off and put back on all the ignition wires several times. Still miss firing. Wondering if i damaged an ignition wire in the process. How do I trouble shoot this?
Submitted: 1 year ago.
Category: Mitsubishi
Expert:  Mike V. replied 1 year ago.

Hi there,

Sometimes what will happen is when you have oil on the plug wires it will damage the rubber on the spark plug boot. Once it's disturbed, the spark will arc through the boot and into the cylinder head instead of the spark plug. Spark will follow the path of least resistance. Remove the wires one at a time and look for any sign of arcing or burning on the boot. If you see it, then you will have to replace the wires to resolve the issue.

It is also possible but unlikely that you have the firing order wrong if you took them all off at the same time.

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Thank you so much!