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If you buy new plugs that are correct for your car, they normally come pre gapped (particularly platinum and other 'non copper' plugs). I like to run 36/1000 or 0.8mm. But 1.1mm (43/1000) is also common.
this is bogus question, sorry\
sparks plugs are gapped to a specific engine
no car stated, no year, no engine.
so no joy.
it also varies by engine class
(compression ratio, turbo or not, and what year,)
older cars had weaker sparks and narrow gaps.
Sounds like you have moisture shorting the plug wires.
Replace the plug wires, keep the car out of the rain over night if you can, and reduce the spark plug gap to .038"
If it is a 1.8 turbo the plugs are under the coil packs on top of the engine. A regular spark plug wrench will fit them. They are down in the block about six inches. They are easy to change. I changed them in about 30 min. The coil packs are held on by 2 torx screws.
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