Slight knock at idle - Ford Powerstroke Diesel Forum
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Old 05-01-2009, 01:59 PM
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Slight knock at idle

Just sorta noticed a slight knock at idle today. Sort of like a tink tink tink, more then the regular powerstroke grunts. Is this a fuel pressure issue or cps? The problem is, I have proper power, easy starts and I dont have any rough running
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Old 05-01-2009, 02:03 PM
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Are you sure it wasn't just echo ing off something to make it sound different?
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Old 05-01-2009, 02:07 PM
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no, it was doing it later too. In a different location..
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Old 05-01-2009, 02:21 PM
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hmm sorry I cant help you there. I tried!
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Old 05-01-2009, 06:45 PM
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what your hearing is probably injector cackle. 7.3 were known for it. nothing to worry about unless its missing
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Old 05-01-2009, 06:53 PM
wriott
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the injectors can sound like a knock once in a while. mine got really loud before they went bad.
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Old 05-01-2009, 07:35 PM
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Quote:
Originally Posted by wriott View Post
the injectors can sound like a knock once in a while. mine got really loud before they went bad.
Lol, well thanks for letting me know I may need to spend money soon.
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Old 05-01-2009, 08:25 PM
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I had an early 99 truck that was sounding more like a diesel truck than it really should have. It *was* a diesel truck, but it started sounding waaay too diesel-y. And it started to smell like unburned diesel out of the exhaust. It got more and more clackity till it was only running on about half it's cylinders and smoking really badly.

A mechanic friend of mine tore it down and found bad cam bearings. Darned things.. They only lasted 300K miles??

Anyway, he traded me the truck for an ambulance. He put new bearings in it, and it's running strong again..
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