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6.4 Powerstroke Noise
I have an 08 F-250 with a 6.4 PSD. It intermittently makes a terrible "knocking" noise under accelleration right before it hits the shift points. I believe it has something to do with the DPF regen cycle because the exhaust is cooking hot every time it happens, but I have only seen the "Cleaning Exhaust" message pop up once and only for a second. It has 4,800 miles on it now, but has done it since it was new. This is my third PSD, but the first with this "wonderful" new exhaust filter. If this is normal it can't be good for it with all the noise it is making! I'm afraid the thing is going to grenade every time I'm pulling a trailer and it happens. Any one have any info?
I gave my '03 7.3 with 180,000mi and no problems to my son, I think I want it back!!
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