Stuck on what to do next, 76 won't run Options

[Danfox007]

I Have a 76 2.0 that has been parked for over 30 years ..I have been going through it trying to get it back in running order fuel tank has been cleaned and coated, new fuel lines, fuel pump, vacuum hoses, plugs rotor, cap, sent injectors in to Mr. Injector to be cleaned and tested. The car will fire andstart for a second, but won't run. Fuel pressure and spark are good, where do I go next?

[fiacra]

I Have a 76 2.0 that has been parked for over 30 years ..I have been going through it trying to get it back in running order fuel tank has been cleaned and coated, new fuel lines, fuel pump, vacuum hoses, plugs rotor, cap, sent injectors in to Mr. Injector to be cleaned and tested. The car will fire andstart for a second, but won't run. Fuel pressure and spark are good, where do I go next?

Have you gone through and cleaned all the grounds?

[DRPHIL914]

check the MPS to see if its holding vac, it could be shot and wont start without it working, also ,theCHt-
if you have spark and fuel pressure, could be timing still might be off a bit

Phil

[wonkipop]

I Have a 76 2.0 that has been parked for over 30 years ..I have been going through it trying to get it back in running order fuel tank has been cleaned and coated, new fuel lines, fuel pump, vacuum hoses, plugs rotor, cap, sent injectors in to Mr. Injector to be cleaned and tested. The car will fire andstart for a second, but won't run. Fuel pressure and spark are good, where do I go next?

not saying this is correct but it sure sounds like what i went through recommissioning mine 5 years back. it was an L jet that had sat for 16 years.

when time came to start it, she would fire and run for a few seconds. around 4-5 seconds at most.

i had reinstalled the original injectors i had cleaned and then tested.

we diagnosed it was firing on the cold start injector, but the main injectors were kaput despite the cleaning. and testing. basically the pintels get corroded and though they can be cleaned and made to work, this does not last for long before they jam again due to the micro scaled corrosion. between having them cleaned and reinstalling, maybe a month or so they had resumed inoperational state.

i managed to get some NOS l jet injectors. installed them.
it fired and ran.

could be whats going on with you.

[ctc911ctc]

Start with checking the foundation and then move on to the walls, plumbing etc.

1. Compression - make certain that the compression is correct, that the valves are adjusted.
2. Assuming DJet(if stock it is a DJet) - the plenum MUST be airtight and be able to hold a vacuum - This is an absolute necessity to get the engine to run correctly.
3. Injectors - verify that all of the injectors spray when actuated - I had one fail after sending to a very good injector refurb company - chased this one for a month....great company, the injectors are very old and well, fail.
4. Sensors - the Temp Sensor on the passenger side of the engine - it is buried - often fails and causes all sorts of havoc, it is cheap however, may be frozen in the case - PB Blaster or similar prior to trying to remove
5. Injector pressure - needs to be 29PSI, verify that this is correct - you state it is good, for a carb engine it is around 3PSI, for an injector engine it is very different - these two fuel pumps are sometimes mixed up and cause lots of problems - 29 into a carb - yikes.
6. Dwell - I cannot stress how important this is. I rebuilt the distro using a kit and could not get the dwell to set at 45deg, I bought a refurbished one set the gap, measured the dwell and when the car started, about 10 running problems ( missing, low power, occasional bucking, etc. ) all disappeared.

I found a great deal of symptom-fix information in Dr. 914's book

https://www.autoatlanta.com/Tech-Tips-700-F...PN-RBK7074.html

Nearly every symptom is covered, short money for a great reference.

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I Have a 76 2.0 that has been parked for over 30 years ..I have been going through it trying to get it back in running order fuel tank has been cleaned and coated, new fuel lines, fuel pump, vacuum hoses, plugs rotor, cap, sent injectors in to Mr. Injector to be cleaned and tested. The car will fire andstart for a second, but won't run. Fuel pressure and spark are good, where do I go next?

[emerygt350]

Start simple and work from there. If you give it starter fluid will it keep running?

As stated above, check if the mps will hold vacuum 17 inhg.
Although plenum leaks are bad, they will just cause a high idle.

When it does run for that moment, does it sound ok or is it running badly?

Does it always start and run briefly?

[rfinegan]

....second for the starting fluid test (supplemental fuel)