rough idle, heavy knocking - Ford Powerstroke Diesel Forum

 
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post #1 of 9 Old 05-01-2007, 10:12 AM Thread Starter
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rough idle, heavy knocking

my truck 95 psd turbo 5speed has been idleing rough on and off and starting a little harder then usual. I dont seem to be losing any power though. When its idling hard theres a really loud knock and clunking that sounds like its coming from the bottom end toward the transmission side. any thoughts would be great thanks guys!!
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post #2 of 9 Old 05-01-2007, 10:24 AM
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this will sound stupid maybe but check your oil level.... low oil will cause air pockets in the high pressure oil pump that will in turn cause rough idle and that knock
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post #3 of 9 Old 05-01-2007, 11:48 AM
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i experiance this when it is time to change my oil and after i change it it idles smoother and knock goes away.

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post #4 of 9 Old 05-01-2007, 01:33 PM
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Quote:
Originally Posted by adam95 View Post
my truck 95 psd turbo 5speed has been idleing rough on and off and starting a little harder then usual. I dont seem to be losing any power though. When its idling hard theres a really loud knock and clunking that sounds like its coming from the bottom end toward the transmission side. any thoughts would be great thanks guys!!
When the dual mass flywheel is going out it'll make alot of noise at idle and make your truck sound ruff. Ya still got a stock clutch??

1996 F-250 PSD CC SB 4x4 5spd 4:10's 6oh intercooler, 3"dp and no more cat, Tymar intake & HPX, .84 a/r housing, 203* stat, 4pos Wildman chip!
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post #5 of 9 Old 05-01-2007, 05:17 PM
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Is the truck making any blue smoke?

Derrick

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'97 F-350 "FORDOR" 4X4 (Dually Conversion, Shackle Reversal, Technicooler , Auto Meter Gauges, 4" DIY Dual Exhaust w/ '08 tips, 4" DIY intake w/ AEM filter, Wicked Wheel 2, 360° thrust bearing, Homemade E-fuel conversion, Wildman Chip, 160cc DIY injectors , DIY IDM mod) 230K and counting...
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post #6 of 9 Old 05-04-2007, 04:42 PM
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sounds like it time to trade it off! j/k



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post #7 of 9 Old 05-06-2007, 08:25 AM
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Quote:
Originally Posted by LTFOX View Post
When the dual mass flywheel is going out it'll make alot of noise at idle and make your truck sound ruff. Ya still got a stock clutch??
I'll second that. We have had several trucks come in making that kind of noise due to the DMFW.

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post #8 of 9 Old 05-17-2007, 06:45 AM Thread Starter
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thanks for the tips guys im pretty sure you hit the nail on the head with the DMFW because thats about what it sounds like. Does anyone know where a good place to buy a good aftermarket one is.
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post #9 of 9 Old 05-17-2007, 06:57 AM
Thats Mr. Oil Leak.....

 
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you can go with a southbend clutch. comes with a new flywheel and the clutch is better than any stock replacement.

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