Hello I have a 94 GMC s15 Jimmy it sputters on take off then at fiftymph it snaps back to life very bad smell of gas out of exhaust replaced plugs cap rotor fuel pressure regulator tempsens tps spider

Ignition control module.

check for a faulty / blocked accelerator pump /circuit as this fits the lack of fuel squirt on acceleration description. Also check the timing of the ignition.

This sounds like an ignition problem. Check the ignition coil. Low spark voltage can cause this. As well, the amplifier module in the HEI distributer could be at fault.

If egr valve is stuck open can cause raunchy smell from exhaust, hense high readings. usually this causes rough idle though.

Yes but the spider is under the manifold... Pull your oil dipstick, if your oil smells heavy of gas, then the spider is busted. If not. check the big plug on top/center of your engine for dirt/moisture

did it happend right after you tune it up if not and it was there before check the egr valve try disconecing it then test drive it if it goes away replace your egr valve let me know if it dont work so i can try helping you

i have a 1994 gmc jimmy 4.3l cpi. i could not pass the emission test.hard to start, spuddered, and smell of gas was strong. long story short, i replaced my spider injectors, good to go. $278 brand new from auto zone.

1994 GMC S15/T15 Jimmy 4WD 4.3 liter V-6 VIN "W"



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follow one of the spark plug wire to where they all are. if no cap found but ignition coils, your model doesn't have any

For this models:
1986 GMC S15/T15 4WD P/U 2.8 liter V-6 VIN "R"
1986 GMC S15/T15 4WD Jimmy 2.8 liter V-6 VIN "R"
1986 GMC S15/T15 2WD P/U 2.8 liter V-6 VIN "R"
1986 GMC S15/T15 2WD Jimmy 2.8 liter V-6 VIN "R"



Hope helped woth this. Remember rated this help. Good luck.