Join Date: Feb 2010
Location: Apache Oklahoma
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U could crawl around the engine with a stethoscope or a metal pry bar or punch and try to pinpoint the sound. harbor freight tools has a cool stethoscope with a rod attached that might b helpful I'm gonna get one today and c how it works. I've got the same problem but mines got loud enough to just park it. Shur don't want to put a window in the block. But also the 7.3 is pretty loud, could b just hearing the injectors firing. Good luck
95 Powerstroke 5 speed regular cab 4x4 W/bale spike bed, strait pipe, front bumper.
06 Powerstroke, 4 door, short bed, auto, 4x4, lariat, strait pipe, Banks six gun.
99 f-350 W/02 engine 6 speed 4D, 4x4, bale spike bed, Alcoa aluminum wheels, 4 inch TB strait pipe, BDP stage 2 injectors, ts 6 position chip, diy intake, autometer boost/pyro, boost fooler