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96 5.7 miss and flooding

cory1996

By cory1996
in Ask A GM Technician

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cory1996 New Member

cory1996

Posted
Posted

i have a 96 5.7 that the other day it started right up and when i shut it off it wouldn't start again. It acted like the timing was off, we poured alittle gas in the intake and all it did was backe fire, we did have a small fire in the intake. we found a bad cap and rotor and it started right up but now it misses and floods bad enough to foul the plugs please help. just woundering if the fire did something to the injectors or is it something else

Jsdirt Senior Enthusiast

Jsdirt

Posted
Posted

Sound to me like the timing was moved way off somehow ... Make sure that distributor hold-down bolt is tight & check timing with a light.

 

Or it jumped a tooth or two in valve timing, which would also toss ignition timing off.

 

If that fire burned any longer than a few seconds, then that could be a problem as well. Many possiblities ...

cory1996 New Member

cory1996

Posted
  • Author
Posted

could the the fire screw up the poppet valves in the injectors

 

if i clean the plugs and dry out the cylinders it runs ok for the first few minutes

Jsdirt Senior Enthusiast

Jsdirt

Posted
Posted

I'm sure if it got hot enough it could screw up quite a bit in there .... but you said this was a `96 ... so no TBI. I was thinking you had TBI .... No way to screw up injectors if the fire was in the throttle body in that case.

cory1996 New Member

cory1996

Posted
  • Author
Posted

i was thinking the injectors just sprayed fuel into the intake manifold i'm just looking at where to start maybe egr plugged from back fire? thanks for the timing advice i'll hsve to double check it

GMstrong Enthusiast

GMstrong

Posted
Posted

Make sure you have all the wires on correctly sounds like you got a couple of them crossed.

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