Weird sounds - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 23 (permalink) Old 05-21-2009, 02:05 AM Thread Starter
 
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Weird sounds

My truck started sounding funny last week, it sounds like I have valve clatter when I am accelerating. It sounds like my dad's POS cars he had when I was little. I haven't noticed any change in the way the BEAST runs though. I know this is not much information but maybe someone can help.

How would I know if I have injector problems?
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post #2 of 23 (permalink) Old 05-21-2009, 02:37 AM
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Do have the injector recall? What job # is your truck? Is the stuck stock? DPF on, DPF off? More info...

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post #3 of 23 (permalink) Old 05-21-2009, 01:18 PM Thread Starter
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I know that the truck was built 04/07. I have had some injectors changed, probably a year ago (don't know about the recall). The truck is Spartanized (running the 275).

I noticed that if I monitor the EGR Pct on my das daq while it is idling it sometimes reads that it is at 25-35%. I thought the 275 closed the egr valve?
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post #4 of 23 (permalink) Old 05-21-2009, 01:36 PM
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Its shut off electronically but it can still cycle. Are you sure what your hearing is not just the injectors?? What version of the 275 is in your truck? Why the injector swap?

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post #5 of 23 (permalink) Old 05-21-2009, 02:31 PM Thread Starter
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Brought it to the dealer this morning and they went for a ride, he said it sounded like nothing he had heard before. They changed the injectors because of the recall apparently, I found that out this morning.
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post #6 of 23 (permalink) Old 05-21-2009, 03:02 PM Thread Starter
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How can I tell what version of the 275 i am running?
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post #7 of 23 (permalink) Old 05-21-2009, 05:33 PM
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When did you get the 275. release date will determin the version #

Lets just say not quite stock.
Slower than some. Faster than most.
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post #8 of 23 (permalink) Old 05-21-2009, 07:26 PM
 
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You havent been 'foot' tuning it over 4k have you? If so you can rest assured you've bent some pushrods.

These trucks should be hard limited to 3400rpm... all dyno charts show them falling off hard after 3300rpm on the HP curve, and after 2600 on the torque curve.
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post #9 of 23 (permalink) Old 05-21-2009, 08:29 PM
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Hmmmmmm...

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post #10 of 23 (permalink) Old 05-21-2009, 09:06 PM Thread Starter
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I don't think that I have ran it that hard. I do open her up ever once and awhile but have never noticed the rpm's going that high. If it were bent rods wouldn't it make the noise all the time not just when accelerating, after you get to speed it doesn't make the noise. And the guy at ford was in the hood while I reved the engine and we couldn't make it do it while it was in park.
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