1999 Chevy 3500 4x4 dually with 7.4 454 vortec

Asked by Oct 13, 2017 at 02:47 PM

Question type: Maintenance & Repair

My truck ran fine it died while taking off 3 months
ago replaced coil and module it fired right up ran 3
months great then I parked it and it will not start I
replaced distributor coil module pick up coil cap
rotor plugs wires crank sensor checked timing chain
all good ,fuel pressure good 60 psi scanner reads all
good has pulse it turns over and booooom back
fires like a cannon sounds like a bomb blew
checked relays distributor timed top dead center
what am I missing ?????

1 Answer

I had this problem with my 99' 5.7 350 vortex rebuilt engine and I went through 3 crank sensors the third was from gm and all the sputtering and back firing stopped

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