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Old 04-30-2016, 10:34 AM   #3
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Join Date: Jul 2007
Location: Centrally located between Houston, Austin and Waco. BCS area.
Posts: 7,947
Re: 1986 K10 Engine Noise - Help Needed! What could it be?

Forgot to mention... Welcome to the site.

One other thing re. the noise. I usually look for the synchronized sound to a pulley movement. In other words the beat or rhythm of the sound in relation to the revolution of the pulley. Some pulleys turn faster than others and you can isolate it somewhat like that.
68 GMC 250/3 speed Saginaw p/b p/s
69 Chevy 350/350 currently in pieces still lookin for a cab
06 Trailblazer
I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive...
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