Vehicle died, won't restart.

[Danny Cabral]

True! Please, what is the MINIMUM voltage the Avenger needs to see from the battery to operate?

I think it's about 8 volts.

The reason I ask about jump starting is that if I try to crank the truck two or three times, battery voltage drops significantly. I don't want to keep having to pull the battery to recharge it and would rather do so in the car, or ala jump start if possible.

So jump start it if you need to.

[octanejunkie]

Thanks. Truck still won't start, even with a jump. I'll focus on ignition components next and try fresh fuel.

[Danny Cabral]

Thanks. Truck still won't start, even with a jump.

I know, I didn't think it was the problem.

GM Large Cap HEI distributor, coil - all of which were operational for years before it “died”.

I'd troubleshoot that internal ignition module first. If using a GM small cap HEI distributor, a genuine GM ignition module should be used.

Defective ignition modules - common problem with MSD 8366 distributors. Replace the ignition module with a genuine GM ignition module. (This same rationale applies to Ford TFI distributors too.) ‒ Ignition module for MSD 8366 Pro-Billet Distributors: GM 19179578 ACDelco D1943A http://www.rockauto.com/dbphp/x,cata...CO_D1943A.html http://www.msextra.com/doc/ms1extra/...EI_modules.jpg ‒ I'd also verify the GM HEI module polarity is wired correctly: https://forums.holley.com/showthread...ity#post120395 http://www.megamanual.com/ms2/GM_7pinHEI.htm ‒ Apply heat sink (thermal conductive) paste on the bottom of the module before installing it. Often times, dielectric grease is wrongly used and will lead to an overheated (failed) module.

[octanejunkie]

I know, I didn't think it was the problem. I'd troubleshoot that internal ignition module first. If using a GM small cap HEI distributor, a genuine GM ignition module should be used.

Defective ignition modules - common problem with MSD 8366 distributors. Replace the ignition module with a genuine GM ignition module. (This same rationale applies to Ford TFI distributors too.) ‒ Ignition module for MSD 8366 Pro-Billet Distributors: GM 19179578 ACDelco D1943A http://www.rockauto.com/dbphp/x,cata...CO_D1943A.html http://www.msextra.com/doc/ms1extra/...EI_modules.jpg ‒ I'd also verify the GM HEI module polarity is wired correctly: https://forums.holley.com/showthread...ity#post120395 http://www.megamanual.com/ms2/GM_7pinHEI.htm ‒ Apply heat sink (thermal conductive) paste on the bottom of the module before installing it. Often times, dielectric grease is wrongly used and will lead to an overheated (failed) module.

Thanks for this, Danny, I suspect the same. Switching back to a regular HEI distributor because that's what I have on hand. My handheld is almost useless. How can I reprogram the ECU with my laptop to remote computer controlled ignition setting?

[Danny Cabral]

How can I reprogram the ECU with my laptop to remote computer controlled ignition setting?

The Avenger, Terminator & HP ECUs are the same. Read last framed information: http://forums.holley.com/showthread....ents-Read-This (Initial Checks & Adjustments - Read Steps #1-#6!)

[octanejunkie]

Read & followed steps. Configured ECU for coil. Installed coil-in-cap HEI distributor (was good when replaced with computer controlled distributor) - still won't start. While cranking, RPM is 350-400, but the throttle blades don't open and injectors don't spray. Is there an easy way to go back to square one with factory default ECU setting? Is it worth it? How do I do that?

[octanejunkie]

Found fuel pressure at TB to be low, replaced fuel filters. Now I'm getting 21 psi at the TB, but the truck still won't start. Reran Wizard, no luck. Injectors are not spraying at all. If I pour some fuel into the TB and open throttle blades truck wants to start. What is preventing the injectors from spraying?

UPDATE: I removed the TB, went back to the old carb & fuel pump, problem solved.