View Poll Results: Have your spark plugs failed?
Multiple Choice Poll. Voters: 245. You may not vote on this poll
Evo X spark plug failures
I'd say the plug was screwed because of too high cylinder pressure and the heat generated with it.
People with 800whp still run stock plugs without issue.
That being said I too have seen plenty of spark plug problems, but they seem very random, as in some are built motors some are stock motors and varying level of mods.
I have always run stock spark plugs, but that being said I am on my 4th or 5th pair at like 32k miles, so not a great sampling lol. I replace them with big mods and motors
People with 800whp still run stock plugs without issue.
That being said I too have seen plenty of spark plug problems, but they seem very random, as in some are built motors some are stock motors and varying level of mods.
I have always run stock spark plugs, but that being said I am on my 4th or 5th pair at like 32k miles, so not a great sampling lol. I replace them with big mods and motors

Hey what were you symptoms of the spark plug failure? I'm having rpm issues... do u think it could be the spark plugs?
spark plugs are an easy thing to replace and check to see if they are causing your issues. I would replace if you are concerned at least pull them.
I have never personally had spark plug issues because I changed mine so often.
I have never personally had spark plug issues because I changed mine so often.
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bjr990
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FS[West]: Evo X BOV / NGK Iridium Spark Plugs.
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