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Old 01-03-2014, 12:27 PM
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knocking sound at idle

I just replaced my injectors with a set of stage 2s from rosewood diesel. It has a slight knocking sound at idle that seems to come and go. I have drove about 100 miles to make sure all the air is out. Also has a little shake to the idle, which I think is the dmf going out, would that also cause any type of knocking noise. Also I haven't had my chip reburned for the stage 2s would that cause my problem.The truck starts and runs great and any rpm over idle the noise goes away. Anyone have an idea of what my issue would be.

thanks
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Old 01-03-2014, 12:50 PM
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I'm not exactly sure what you mean by "knock". What I can tell you is that with my tuning I notice a change in pitch, that I would almost call a knock.

Sitting at idle, in a stock tune everything sounds normal. When I switch it to a hot tune, there is a distinct change in fueling that makes a knocking sound.

Try this, you possibly could be paranoid about a non-issue!


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Old 01-03-2014, 01:12 PM
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im running it on the stock tune, it does get louder on all the other tunes
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