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Old 12-21-2023, 11:46 PM #1
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Engine sounds different after replacing belts
Anyone notice their engine sounds slightly different after replacing the drive belts? I replaced mine today and tensioned them to spec using a Krikit belt gauge. Now the engine sounds slightly different at idle to me. Almost like it's got a very slight whine. I know the old belts were too loose so I'm a little concerned I've got a pulley or something that can't handle the correct tension. But I can't hear or see anything when the hood's open. I can only notice it in the cab. I may just be losing my mind but I thought I'd see if anyone noticed anything similar when they did theirs.
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Old 12-22-2023, 01:26 AM #2
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Quote:
Originally Posted by texadelphia View Post
Anyone notice their engine sounds slightly different after replacing the drive belts? I replaced mine today and tensioned them to spec using a Krikit belt gauge. Now the engine sounds slightly different at idle to me. Almost like it's got a very slight whine. I know the old belts were too loose so I'm a little concerned I've got a pulley or something that can't handle the correct tension. But I can't hear or see anything when the hood's open. I can only notice it in the cab. I may just be losing my mind but I thought I'd see if anyone noticed anything similar when they did theirs.
It's possible you may be hearing a bearing or pully whine from the belts being tigher.

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Old 12-22-2023, 05:44 AM #3
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texadelphia, I am over 60, so its guaranteed I am losing my mind.

It could be the whine of new belts OR.... I would take my high end fancy mechanics stethoscope ( any 2' length of fuel line) and see if any pulley or idler is starting to screech.
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