88 5.7 ltr won't start

tovoninc

Senior Member
I have a K2500 5.7 liter that has been running rough off and on. Last night I went to start it and it would turn over and try to start but no luck. I'll be taking it to the garage tonight. To me this sounds like the ignition module. Any other thoughts?
 

Dave_Dean

Junior Member
Location
San Antonio, TX
Usually when the ignition module goes bad the motor wont "try" to start, they'll just crank and crank and crank. I've never heard of them slowly going bad just one day the motor wont fire. If the motor is attempting to fire then there is a problem else where.
 

staley52

Member
Location
Iowa
start simple and I agree with dave_dean modules usually quit no ifs about it

check plugs, wires, cap, and rotor
if appear ok

check for fuel look and see if the injector pulse fuel when cranked over

that should start you off
 
OP
T

tovoninc

Senior Member
Thanks for the help. It turned out to be a bad O2 sensor and that fouled the plugs causing it to not start. Took it to a shop for the fix but at least I was able to cover all the basics.
 

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