Is it normal to have a noisey engine after a spartan? - Ford Powerstroke Diesel Forum
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Old 02-18-2011, 11:30 AM
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Is it normal to have a noisey engine after a spartan?

Hi guys,

I posted this in the Spartan forum on their site but hopefully the added traffic here will net me a faster response. I have a 2008 F350 and I just installed the Spartan 275 and AFE DP back with all the cat/mufler/dpf deletes. Power is wicked but I notice that I can hear what sounds like really noisey valve clatter or something above 2000 RPM. The best way I can describe it is that it sounds like if you just jumped in a cold truck, started it and then tried to rev it quick as in a quick press from no throttle to WOT. That's the kind of noise it's making but it seems to rev OK and the truck is warm. Now I will admit that since I've gone from my rattletrap 6.0L to the 6.4L the almost gas engine silence has made if hard for me to adjust to the new sounds of this engine. It always sounded more like a poorly running gasser in the engine bay rather then a good running diesel so it could be normal and all in my head but I'd thought I ask. The noise seems to get quieter once the trans, oil and coolant temps get closer to the 200 degrees celcius mark but it's -20 celcius here(-4F for all you americans) so it's tough to get/keep the temps up that high. I did a search but the closest it brought up was a possible exhaust leak. I crawled under the truck and I don't see any sooty spots on any of the piping but I loosened and tightened up everything again anyways
Thanks,
Beene

Edit: I just loaded the 150DPF off tune and there is no noise. Injector Clatter maybe? The truck is a job 1 May of 07 Truck.

Last edited by Beene; 02-18-2011 at 12:44 PM.
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Old 02-18-2011, 06:55 PM
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Definitely sounds like injector rattle, which is normal with high HP tunes
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Old 02-19-2011, 07:11 AM
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Ok so I think you're right on the injector clatter. The 250 doesn't do it but the 275 does. Is it alright reliability wise to run the 275? I don't beat on it often but I do want the milage that goes with the 275
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Old 02-19-2011, 07:13 AM
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Sounds like injector rattle. Its the heavy price you pay with a high HP tune Nothing to worry about.
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