Hello and Thanks!

Truck floods out. Runs well on ether with fuel relay pulled. TPS read 1.021 VDC. Coolant temp sensor ohms out at 45k at about 78 degrees. New plugs,
wires, cap, button, fuel filter, and 5 gallons of 93 octane in front tank. Swapped coil. Fuel pressure read 45 pounds. (is that to high). Vac line remove from FPR. No gas come out. I have good spark. Seemed rare fuel injection would flood so I thought weak spark. Changed Dist and coil. Same. Startes. Symptoms may help an expert narrow down so I will try to explain better. Always trys to start while pedal floored and starter ingaged. Other than that it doesn't even seem to try to fire.

When sitting a week or longer it will start and run for about a min. Then it dies due to what I believe is flooding. Read and read on sensors. Seems like TSP and Eng coolant could tell it to flood. They checked out. Anything else make it flood? I have Spark. Fuel. Air. Timing. The 5 things I THINK may be issue is..

1. Fuel pressure to high. 45. Causing fuel to leak past injectors.
2. Partial clog on return fuel line causing high pressure.
3. Bad injectors on pass. side. Pulled driver's side. Looked good.
4. Bad ECM.
5. Clogged exhaust.

Again fuel pressure reg does not leak through vac port. Do they fail any other way?

Anyone think of anything else or rule out any of these. Any help would be greatly appreciated!

 

ECT should read 37K at 68 degrees. Read on

 

Check the ACT (air charge temp sensor) on the lower intake manifold. It should read 37k at 68 degrees, the same as the ECT, also the engine coolant sensor is reading a little high at 45K. Resistance should go down not up with tempature. The computer thinks its colder than it really is and flooding it out. Make sure the vacuum line to the map sensor isnt leaking. I had both the act and ect go bad on my 87. I was getting like 5mpg! Put two new sensors in, now back up to 15mpg no black smoke.