G35 Coupe V35 2003 - 07 Discussion about the 1st Generation V35 G35 Coupe

strange engine knocking noise at idle

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Old 09-18-2003, 08:05 PM
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strange engine knocking noise at idle

I installed my stillen intake eariler today and loved the sound of my new intake. But when I started it up a few minutes ago, at idle I heard a subtle knocking noise followed by a jolt of rough at idle. What can this be?

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Old 09-18-2003, 08:55 PM
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Re: strange engine knocking noise at idle

Bkchang79, Could it be something to do with the Stillen install? If it were me, I'd retrace my steps back to the beginning, checking all connections & clamps.
Good luck.

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Old 09-18-2003, 11:33 PM
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Re: strange engine knocking noise at idle

checked everything, all the bolts are tight and tube is nice and sealed, no leaking air whatsoever.

How can too much air be bad? So would you say any type of forced induction is bad?

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Old 09-19-2003, 10:16 PM
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Re: strange engine knocking noise at idle

well the car is idling like normal now, it's probably the computer trying to learn the new toy I put in. Now I have to find out how to get rid of the whistling noise the stillen intake makes. Any suggestions?

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