Mechanics

I HAVE BACKFIRE ON MY NON TURBO..

1990 Nissan 300ZX

I used the scanner to see whats going on n it tells me to change oxygen sensor so I did it but the car stills backfiring? The checked the timing n is working perfectly. What should I do?
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Tryingtofixthis?
June 28, 2012.




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Tiny
Rasmataz
Jun 28, 2012.
Thanks for the link very helpful

Tiny
Tryingtofixthis?
Jul 15, 2012.
Did you find the problem?

Tiny
Rasmataz
Jul 15, 2012.

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