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7.3L IDI Diesels (Not Power Strokes) Technical discussion of topics related to vehicles powered by the 7.3 Liter In-Direct Injection Navistar engines.

       
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Old 11-01-2006, 08:23 PM   #1 (permalink)
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Strange noise coming from motor?

I was wondering if anyone had heard this from there truck. When in high gear if you share down on it it almost sounds like a fluttering sound (almost like a slight miss) out the exaust and when you let off of it it makes another type of fluttering sound. I was wondering if its because I have not turned up the IP from when I put the turbo on.
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Old 11-01-2006, 08:57 PM   #2 (permalink)
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Re: Strange noise coming from motor?

Sounds like normal turbo noises. The turbo alters the flow of the intake and exhaust gasses and can make wierd noises when the turbo and the gasses are going at different speeds under rapid acceleration / deceleration.
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Old 11-01-2006, 09:45 PM   #3 (permalink)
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Re: Strange noise coming from motor?

If the instructions for the turbo install stated turn up the pump you may want to do that first. You do have a pyrometer installed.....
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