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OK the name Russell im new here and have a problem with my truck its an F350 with a 96 12 valve cummins and its popping back through the intake i tried and checked everything Well i changed the head gasket and it started....so i changed it again....still did it....Had a valve job done still...it had a bent push rod (my fault i missed the lifter) replaced it checked compression 475psi across the board thought i might have wiped out the cam pulled it "miked" it all lobes were like brand new new injectors.delivery valves tested fine its running on all 6 but pops loud through the intake and if you get into it you here detonation and it sounds like crap....idk im BAFFELED with this think im just outa ideas any ideas please let me know ...Thanks in advanced!!!! Russell

:howdy:

Post up in the 12 valve section. Have better luck over there. :U:

Hi there welcome to DB :howdy:

:hi: :howdy: Welcome n enjoy your stay here at DB Russell !!

Hi Russell. :hi:

Sounds like the timing is off.

:howdy::hi:

:howdy:

:howdy::howdy:

Welcome to DieselBombers :c:

:howdy::hi: