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10 minutes, I'm sure old injector is leaking.Technically, not on the original "spider" poppet injectors. I haven't looked in a long time, but IIRC spec was like 58 psi. Although both my old 4.3 and my 5.7 have always started just fine with 55 psi. I installed the updated MPFI because I had a dead injector when I bought it. The MPFI can work with lower pressure.
The pressure drop is a concern too. You either have an issue with the FPR and or an injector that's leaking fuel. When that happens the fuel floods the engine and can cause issues with crank-no-fire. How long does it take to go from 55 to 44?
I've never tried this, but I've read once a guy opened the throttle body and primed the pump and saw with a flashlight a huge squirt of fuel getting dumped inside the intake! Massive flooded condition in that case.
If it won't run at all with starting fluid then maybe distributor, timing or something is wrong. Did it even run for a second?Tried that, no go
The advantage of a new MPFI set is you get the entire assembly including a new FPR.10 minutes, I'm sure old injector is leaking.
Once I get it running I will pull it into my shop and replace those.
Maybe just go ahead and replace the coil if the spark doesn't look too strong? I think the ICM controls like the spark timing, but the actual spark is created by the coil. The Haynes manual has a procedure for checking coil resistance. I never recall having a failed coil, however. But did have an ICM and distributer fail.Yes, when I tried starter fluid it attempted to fire off but died right away.
Just put on a new fuel filter, gained 3 psi, so I am now at 58, with it falling off a little like before.
When I checked for spark it was yellow across several cylinders. Might just be the ICM.
I will get the ICM tomorrow, once it's installed I will update this thread.