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  #1  
Old 01-13-2013, 11:16 PM
frogjaw frogjaw is offline
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Question 1996 Ford F350 issues.....

I have a 1996 F350 with a 7.3 diesel engine. When it first starts it makes a loud rattling noise and it is slow to accelerate. When you push on the gas instead of ahooting up to 3500 rpms it crawls. After it warms up the rattling noise stops and it accelerates fine. Does anybody have any ideas what could cause this?
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Old 01-14-2013, 08:22 AM
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stodg73 stodg73 is offline
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Is this a new problem or has it been going on for some time?
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Old 01-14-2013, 04:45 PM
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MnTom MnTom is offline
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Hey, Frogjaw!! Glad to see you here!
Does your truck blow black smoke when it won't accelerate? It sounds like the EBPV (exhaust back pressure valve) that is under the turbo is acting up. It is operated by oil pressure to close and a spring to open it. Check to make sure the spring is good and also there is a possibility of the flap sticking and once it warms up it opens. You may need to pull the turbo to check it.
Tom
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