Howdy,

First, just to check, but if you replaced the diode yourself did you put in on in the correct direction?

I think the connectors are robustly designed but stranger things have happened than a $5.00 a day worker switching spade sizes.

I am new to the honda world. 1990 Civic.

I have the same issue right now with my vehicle.

Happened today.

Before work it died, after work (sunny day) it started immediately but ran for only for half a second.

Quick diagnostics, saw spark at cylinder 4, went to fuel, fuel present, (disconnected the return line at the intake chamber, fuel flowing during ignition, off at switch off position) tests stopped, had to go to work.

I confirmed the functionality of the main fuel relay after work.

ECU was replaced 3-6 months ago by the previous owner, electronic distributor and associated instrumentation was replaced just prior to my purchasing the vehicle.

I am looking for the direction to go, upstream or down from the main relay.
After I check for fuel pressure, is it safe to open the intake and look for fuel at the injector during ignition cranking? (I did this on a carburated car frequently) If fuel is not being injected, do I attack the distributor, ecu, or fuel pump next?

Is there a procedure for testing the fuel pressure and is there a spot that is easier than the others?

Any guidance is appreciated. I will post the summary of the fix, associated pictures, and a diagram if I have time.