Truck sputtered, backfired, now wont start

jus10inbrla · Jun 3, 2023

Fuel pump relay - good
Fuel pump fuse - good
Fuel filter - good clean fuel coming out
Spraying ether in intake, no start
Pouring gas in bowl under injector- still no start .

Whats next ??

HotWheelsBurban · Jun 3, 2023

jus10inbrla said:
Fuel pump relay - good
Fuel pump fuse - good
Fuel filter - good clean fuel coming out
Spraying ether in intake, no start
Pouring gas in bowl under injector- still no start .

Whats next ??

Cap and rotor good? Module and coil, good? Got spark?

PlayingWithTBI · Jun 3, 2023

jus10inbrla said:
Whats next ??

No popping or even an attempt to start? Check your distributor, cap, rotor, pickup coil, ICM, ignition coil, wires and connectors to each. Is the rotor turning when cranking?

Edit:
HotWheels beat me to it :anitoof:

jus10inbrla · Jun 3, 2023

Thats next / past my scope of backyard mechanicism. Talked to a buddy earlier ; mimicked what yall just said. In the distrivutor / spark plug / coil / rotor now. I tried pullin spark plugs but the boots are stuck on. Looks like I will be pulling it to a mechanic

jus10inbrla · Jun 3, 2023

PlayingWithTBI said:
No popping or even an attempt to start?

Nope nothing

PlayingWithTBI · Jun 3, 2023

jus10inbrla said:
I tried pullin spark plugs but the boots are stuck on.

If it died and won't even try to fire, odds are, it isn't all 8 spark plugs going bad at the same time.

jus10inbrla · Jun 3, 2023

PlayingWithTBI said:
If it died and won't even try to fire, odds are, it isn't all 8 spark plugs going bad at the same time.

Thats kinda what I figured. Got a strong feeling its in the distributor area.

Schurkey · Jun 3, 2023

PlayingWithTBI said:
No popping or even an attempt to start? Check your distributor, cap, rotor, pickup coil, ICM, ignition coil, wires and connectors to each. Is the rotor turning when cranking?

ALL of that.

Failed distributor gears are common on Vortecs, not so common on TBI--but it happens.
Cracked magnets on the mainshaft are common as dirt, and cause poor/intermittent ignition.

You must be registered for see images attach

Burnt carbon contact in the center of the distributor cap is common, as are failed coil wire, and plug wires. Rotors can have the plastic insulation fail, spark grounds to distributor shaft.
TEST ignition coil output with a spark-tester calibrated for HEI.
www.amazon.com/dp/B003WZXAWK/?coliid=I3S98D7T1J0RLJ&colid=2VLYZKC3HBBDO&psc=1

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Erik the Awful · Jun 4, 2023

Sputtereed, backfired, died, and won't restart? I'd guess ignition module. If you don't have a spare in the glove box, you need one. If nothing else, for swap-tronic diagnosis. Don't forget to put a thin layer of heat sink compound (not dielectric grease!) on the bottom.

bigjzoe83 · Jun 4, 2023

jus10inbrla said:
Fuel pump relay - good
Fuel pump fuse - good
Fuel filter - good clean fuel coming out
Spraying ether in intake, no start
Pouring gas in bowl under injector- still no start .

Whats next ??

It's the module under the distributor cap

Truck sputtered, backfired, now wont start

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