well I search and find this post
http://www.automotiveforums.com/vbul...spark+plug+gap
kevin say something about gap the spark plug 40, and I did gap it 40, after done I test drive, take it to the highway, then come to stop, WOW no more jug around, idle normal ( well it happent before and my mechanic did the same thing , change spark plug and pour in a bottle of fuel injection cleaner). But I dont know gap 40 is good for NGK or not.
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NEW 1997 Camaro z28 6 speed
illa never going back to import  , but killa alway be nice to any DSM he saw
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95 camaro lt1
1992 Pontiac Firebird v6 auto -sold -
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