If it doesn't get faster it will not be a valve/rod/lifter/anything else in the motor as it all moves faster when the car revs up. I duno wtf it could be if it doesnt get faster, loose bolt somewhere? exhaust?
What color smoke? only when in boost? or just worse when in boost? oil looks good? more infoz required.
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RIP my very best friend. DJ aka djzstang1 you will be missed dearly. I love you bro.
1995 240sx se
1992 240sx
1990 240sx se
1991 240sx hicas sr20det MDX
1991 240sx project coupe
1990 240sx drift beater hatch
1993 240sx sr20det