knocking

40

Asked by Sep 12, 2012 at 11:00 PM about the 2003 Infiniti I35 4 Dr STD Sedan

Question type: Maintenance & Repair

I fill my infinity I35 - 2003 with premium gas but it gives me a lot of knocking, I have done everything to clean the mass air flow sensor.
What else can I do?

2 Answers

9,755

When is it knocking? At idle? highway speed? or both?

5 out of 5 people think this is helpful.
40

on highway and whenever I push the accelerator at 40-60 m/h

4 out of 4 people think this is helpful.

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