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New Noise
Posted: Thu Apr 11, 2024 6:06 am
by greeno
Sounds like it's coming from the dizzy. I don't think it's the generator or water pump. This is at idle:
https://youtube.com/shorts/xtPJqD4p7LM?feature=share
Anybody got ideas?
Re: New Noise
Posted: Thu Apr 11, 2024 9:24 am
by ODAddict
How about the clutch area? Try depressing the clutch pedal slightly while running to see if that makes a difference.
Re: New Noise
Posted: Thu Apr 11, 2024 9:51 am
by greeno
Same noise with the clutch in or out
Re: New Noise
Posted: Thu Apr 11, 2024 1:17 pm
by ODAddict
There was a lot of competing or background noise in the video. Is it possible to separate out or filter the sound?
Could be a worn camshaft, oil pump issue, valve lifter, distributor, generator or water pump bearing, etc, but go simple first.
What about the belts? Are they in good shape?
Re: New Noise
Posted: Thu Apr 11, 2024 4:42 pm
by ashyers
Pull the belt and see if it goes away. Quick and eliminates a bunch of items.
Re: New Noise
Posted: Thu Apr 11, 2024 5:59 pm
by Rdinatal
ashyers wrote: ↑Thu Apr 11, 2024 4:42 pm
Pull the belt and see if it goes away. Quick and eliminates a bunch of items.
Excellent suggestion!
To me it almost sounds like high pressure air leak. Time for a quick compression test
Re: New Noise
Posted: Thu Apr 11, 2024 9:21 pm
by Cal_Gary
Perhaps a manifold leak?
Gary
Re: New Noise
Posted: Sat Apr 13, 2024 7:17 am
by Murf
Go get one of those cheap auto stethoscopes and simply touch each component. When you hit the right one you will know it!
Re: New Noise
Posted: Sat Apr 13, 2024 8:27 am
by ODAddict
Excellent suggestion, Murf.
Now, I'm off to play doctor with my truck.
Re: New Noise
Posted: Mon Apr 15, 2024 6:10 am
by greeno
Same noise with the belt off, and after torquing the manifold (several nuts were loose).