Diesel Forum - TheDieselStop.com - View Single Post - Strange high metallic knocking sound
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post #6 of (permalink) Old 10-10-2018, 12:18 PM Thread Starter
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Originally Posted by Oneof6 View Post
Possible, even on a low mileage truck like yours. There is an idler pulley that one can replace for about 20 bucks or refurbish with an new sealed bearing for 5 if you can press a bearing in an out. Entirely possible and highly likely regardless of low mileage is that the spring loaded belt tensioner is weak, a function of time tensioned more than miles, allowing the belt to misalign and squeal. Not a difficult R&R and around 100 bucks in parts.

The belt removal test RT recommended is the logical start, assuming nothing else is in contact with the belt.
Hi, were checking the pulleys and tensioner. The slight movements are not play - just normal.
Tensioner not weak.
Sound does not come from there, comes from a lower point on passenger side.
There is the belowed up pipe kit stainless steel installed. Might the sound come from there?
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2002 Ford F350 Super Duty crew cab, long, 4x4, 6 speed manual transmission, manual hubs, double rear wheels, 47000 miles in June 2018 - going back to South America and continuing travelling

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