开云体育

I gathered some more information this afternoon; I'm learning this start?sequence is a bit complex....

- Fuel Pressure test

Gauge tee-d in after the filter

Turning the key to 'Run'

IF the CEL?cycles (as I described?before) then the fuel pump doesn't come on until the CEL?becomes constant (this happens unpredictably, sometimes immediately, sometimes after a few s, sometimes it seems to just keep on cycling)

- Once CEL is constant, then the fuel pump turns?on for 2-3 s; pressure rises to ~32-34 psi (that seems about right?)

- Then pump turns off and pressure decays back to < 10 psi pretty fast (in < 10 s)

Going from 'Run' to 'Start' turns the fuel pump on again and the engine usually (but not always cleanly) fires up

Fuel pressure remains at 32 - 43 psi when the engine is running (higher when revving?the engine); that seems correct.

The rapid decay of fuel pressure once the pump turns off seems wrong; I would have expected it to stay high for 30 - 60s at least (that's what I'm used to on my L-Jetronic TR7s). If this indicates a leak, then I would think the only possible causes could be the pressure regulator or injectors - anything else?

Thanks for reading my long missives and for all your ideas!

Fuel pressure regulator on order...

Spare injectors dug out of my parts stash; they need rebuilding first...

THANKS