what spark plug to use

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Jun 20, 2010 | 07:32 PM

ou812sm

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From: new bedford mass.

what spark plug to use

what spark plug to use in a 2003 lq9

Jun 20, 2010 | 07:43 PM

caddy03pimpin

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From: socal

AC Delco 41-985

Jun 20, 2010 | 07:49 PM

Mangled03gmc

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From: In a van DOWN BY THE RIVER

NGK tr-55's or ^^^^^

Jun 20, 2010 | 10:41 PM

Onetogofast

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From: Amarillo, TX

I had the same question on my mind this morning, went to pick up TR-55's and ended up with TR-55ix's. I read on here you should gap the 55's to 60 because of the copper and to me that gap just seems wide, the recommended gap on ix's is 40 and iridium.......