T&T Racing

When was the fat ground from chassis to bell housing not connected and when was it reconnected

Acantor

The temp sensor is affecting the fuel output not spark. The problem right now is that there isn't enough fuel output to keep the engine running. I think we can rule out everything that doesn't pertain to fuel delivery from the injectors.

Edit: I misunderstood your statement. It is intermittent in the sense that sometimes it will start and idle very rough around 200 and then die. And sometimes it will start and immediately die.

Acantor

It was not connected when I bought it (in other words I never touched it). I reconnected it after the car didn't start after the rebuild (when this thread started)

Legoland951

So it will start EVERY time and continue to run whenever starting fluid is used, correct?

Acantor

Correct, it starts but will die out pretty much immediately, and with starting fluid constantly sprayed in it will run.

Legoland951

This is literally an impossibility if the fuel injectors are spraying into the cylinders in pulses and doesn't fire while starting fluid makes it run as you have checked for large vacuum leaks. Provided that what it is spraying is flammable.

Unless it is an intermittent problem involving something else but unlikely as it always run with starting fluid.

Acantor

It fires and starts but it doesn't idle or keep running

Legoland951

What happens when you apply throttle?

From what you said in the last 2 posts, it is likely a mixture problem.

Is your AFM connected?

Acantor

Yes, the AFM is connected, but from what I understand, it is bypassed on cold start till the air valve closes. When I apply gas it does, so we deduced that it was leaning out. The cylinders are not getting enough fuel to keep running but they are getting enough to fire up.

Legoland951

There is a mixture adjustment for idle in the AFM.

So what happens when you apply throttle? Does it run right, fire on all 4, and responsive?

Acantor

No, It dies immediatly.

Legoland951

When you push the accelerator with starting fluid (longer bursts due to the need for more fuel), does it rev up?

When it is running on starting fluid, you can check to see if the injector pulse increase in frequency as the rev goes.

Also, if you pull the injector rail up with the injectors squirting into cups while the car is running on starting fluid, you may be able to see physically what is going on with the fuel flow out of the injectors in real time. Be very careful as if you spill the fuel onto arcing plug wires, it can catch on fire so have a fire extinguisher ready with someone helping you.

shadetree2

Acantor,,please give me a call. 271-0885
Pat

T&T Racing

Acantor,
To obtain another opinion, contact ECUDOCTORS
https://www.ecudoctors.com/

Acantor

I have done the cup test already and all injectors are firing but the amount looks a little low but I don't have a baseline.

I haven't increased the revs while spraying fluid.