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I can't tell you the correct gap but I thought I would mention it is best to use the gap the plug manufacturer suggests rather than the vehicle manufacturer. Sometimes they are different.
You will probably find a Bosch spark plug application catalogue on the net and this should provide the gap specification.
what have you replaced with your tune up? should change plugs and plug wires, as well as the fuel filter, and air filter. the plugs should be set to factory spec.. be absolutely sure you've got the correct wires going to the correct plugs. the coil packs are a pain to get to but if all else fails, it may be time to replace them.
on some cars you need to remove a plastic engine cover first. And some cars have individual coils that sit on top of the spark plugs. You thus need to remove these small coils to get to the spark plugs.
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