knocking sound at idle - Ford Powerstroke Diesel Forum
 
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post #1 of 3 Old 01-03-2014, 12:27 PM Thread Starter
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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.

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2000 F350 Lariat dually 6 speed 4" mbrp, 6637, Banks brake. Just rolled over 60k miles
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1995 dodge 2500 drag truck. 6.82@104 in the 1/8th. Sold
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1997 F250 auto. sold
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post #2 of 3 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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1997 F250 7.3 5 speed, 3.55s, D60, 4" Diamond Eye Exhaust, Napa Intake Filter, E-Fuel, 35" bfg mt's, stage 2 rosewoods/tuning, Gauges

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post #3 of 3 Old 01-03-2014, 01:12 PM Thread Starter
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im running it on the stock tune, it does get louder on all the other tunes

2000 F350 Lariat dually 6 speed 4" mbrp, 6637, Banks brake. Just rolled over 60k miles
2016 keystone cougar 333mkswe
2016 Ford Escape Titanium 2.0 ecoboost
2014 vw Jetta sportwagen tdi. sold
1995 dodge 2500 drag truck. 6.82@104 in the 1/8th. Sold
1996 dodge 2500 auto. sold
1997 F250 auto. sold
1997 F250 5 speed. sold
1998 dodge auto 2500. sold
2001 dodge 5sped 2500. sold
2003 F250 6.0 auto. sold
2004 F350 6.0 6 speed. sold
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