weird noise?

1997powerstroker · #1 (**permalink**) 10-02-2008, 05:56 PM

when i start my truck if i stand next to the stacks 5-15sec after i hear a sound like air is being sucked in the kinda a pop its not very loud but it goes away pretty much immediately after and i never hear it again. Any ideas of what to check?

Thanks, Kevin

***NCHornet*** · #2 (**permalink**) 10-03-2008, 06:01 AM

Kinda hard without being there. Could have always been there and you just hear it now because of the stacks. It may be your GPR kicking off, it makes a pretty loud pop!!

NCH

**95dieselsmoke** · #3 (**permalink**) 10-03-2008, 05:40 PM

it is the EBPV(exhaust back pressure valve). garauntee it. all it is, is a baffle up by the engine that closes temperarely to keep more heat to the engine so it warms up faster.

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