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S14a misfire under boost
Hi,
I’ve just bought a 200sx S14a just over a week ago and over the past few days it’s developed a misfire when you get on boost around 7psi or so. I’ve changed the plugs and cleaned the MAF with electronics cleaner with no apparent affect. Has anyone else had this issue? Or any other pointers? I’m incredibly new to nissans and older cars in general.
Cheers.
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Its either a coil pack or the plug gaps need closing up.
Coil packs are a very common failure.
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Most likely coilpack, had the same symptoms from a loose plug but doubt it’s that if you’ve swapped them.
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Don't discount the coil pack harness either. It's old. Very old.
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Check the coil pack loom earth that goes to the back of the head as well
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