A4 (B5 Platform) Discussion Discussion forum for the B5 Audi A4 produced from 1995-2001 B5 FAQ

Gapping spark plugs

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Old 04-21-2003, 07:16 AM
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Default Gapping spark plugs

I'm picking up some copper spark plugs based on some responses I got from a few helpful people on this site. But can anyone tell me how much to gap them? I have the car chipped so I know the stock gap of .40 wouldn't be good, right?

Thanks.
Old 04-21-2003, 07:21 AM
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.032
Old 04-21-2003, 07:43 AM
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metric, please.
Old 04-21-2003, 07:51 AM
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.032 * 2.54 = .08128cm or .8128mm
Old 04-21-2003, 08:00 AM
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could poor idle be caused by unevenly gapped spark plugs?
Old 04-21-2003, 08:07 AM
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Default Yes, but unlikely unless you gapped em to like, .08 or something like that.

It usually misfires at WOT, not idle IIRC.
Old 04-21-2003, 09:04 AM
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Default Re: .032 * 2.54 = .08128cm or .8128mm

So .032 is the correct size right?
Old 04-21-2003, 09:07 AM
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0.7 - 0.9 mm spec
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