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Newbie question about engine noise

1574 Views 12 Replies 9 Participants Last post by  67guzzler, 
chadmd80
Hey guys I have a question about an engine noise my 2500 makes. Keep in mind I am totally new to Diesel's so it may be a very stupid question. A little background is the truck is newly deleted (EGR/Cooler, throttle valve, turbo back exhaust, Raceme tuner set on tune C and sw1 economy. The noise that I get is when the engine is normally at a low rpm and a load is put on it. The best I can describe is it sounds like when a gas motor has crappy gas and the valves knock. Seems to do it more when both the engine and outside air is cold. Temps here in Ohio are in the 30's.

Any suggestions on what it is, is it normal, is there something I need to change?

Thanks guys
Chad
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chadmd80 said:
Hey guys I have a question about an engine noise my 2500 makes. Keep in mind I am totally new to Diesel's so it may be a very stupid question. A little background is the truck is newly deleted (EGR/Cooler, throttle valve, turbo back exhaust, Raceme tuner set on tune C and sw1 economy. The noise that I get is when the engine is normally at a low rpm and a load is put on it. The best I can describe is it sounds like when a gas motor has crappy gas and the valves knock. Seems to do it more when both the engine and outside air is cold. Temps here in Ohio are in the 30's.

Any suggestions on what it is, is it normal, is there something I need to change?

Thanks guys
Chad
Click to expand...

We have 10 - 24' International flat bed trucks and they all make that noise when you start them up after a cold night. I think it is just because the engine is cold and the oil is thick because of the cold. I never gave it much thought since all the diesels I have ever ran made that noise. :confused013:

Which part of Ohio are you in?
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L
It is inherently a diesel thing, "diesel knock" and "injector noise" they sit there cold and have a bit of a rattle. Even my MAN truck Diesel does it when it is cold.

Almost sounds like a series of rod knocks, the very high compression diesel ignition knock... Get used to it, they almost all do that diesel rattle to some degree... :thumbsup:

lone Ranger in Australia
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chadmd80
Awesome. Thanks guys. I just wanted to make sure that something wasnt wrong or I was going to tear something up. I always let it warm up before I put my foot to it very much. Thanks again for the input
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chadmd80
Oh and 1st I am in Clarksville, bout an hour north of Cincy.
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chadmd80
As far as adjusting the timing. That is out of my league. I wouldnt know to go up down sideways, lol.. If you guys feel like schooling me on it I am all ears.
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bryce3685
chadmd80 said:
As far as adjusting the timing. That is out of my league. I wouldnt know to go up down sideways, lol.. If you guys feel like schooling me on it I am all ears.
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you can play with the timing on ur race me i noticed if i went to stock timing i had way less rattle but didnt seem as good mpg wise. jumped to sw2 and there wasnt any timing rattle unless pullin real hard. my understanding is you dont want to much timing while adding more fuel than stock. i think thats how H&S guys wer blowing HGs too much timing at high rpms while fuelin hard equals lots of cylinder pressure
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diesel_newbie
Adjust your driving style. My truck doesn't make that noise unless I'm dumping way too much fuel at too low a rpm range.
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B
A man can drive himself mad listening to these engines too much. They make all sorts of strange noises. You could pick out a new knock every week!
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T
The ticking sound is just the advanced timing. That is how the engine makes better fuel economy. Never been an issue on any of my last two trucks.
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chadmd80 said:
Oh and 1st I am in Clarksville, bout an hour north of Cincy.
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Gotcha. I am on the other side of the state just outside Canton.
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N of 60
bryce3685 said:
you can play with the timing on ur race me i noticed if i went to stock timing i had way less rattle but didnt seem as good mpg wise. jumped to sw2 and there wasnt any timing rattle unless pullin real hard. my understanding is you dont want to much timing while adding more fuel than stock. i think thats how H&S guys wer blowing HGs too much timing at high rpms while fuelin hard equals lots of cylinder pressure
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The higher timing should match the higher power levels.
Too much timing and not enough fuel or defueling is what causes the high cylinder pressure. But yes you can go the other way when your foot is completely into it and you're building a ton of boost.
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67guzzler
chadmd80 said:
As far as adjusting the timing. That is out of my league. I wouldnt know to go up down sideways, lol.. If you guys feel like schooling me on it I am all ears.
Click to expand...
Are you running the default timing for SW1? If not, set it to default.

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