I'm stumped with a no start problem, Fuel injection strikes again Options

[brant]

Hi everyone,

sorry for basically posting the same problem I've been chasing for 3months...

1972 1.7 with Djet

I've Done nearly everything... honestly.. tested and re-tested... This weekend I even changed the FI harness completely..... So I guess I'm going to start over from scratch and give it one more go around.

The good news is that my problem has gotten worse and now its to the point of not starting, so it should be easier to find than when it was intermittent.

The symptoms.
when the car is cold (or sits for 30 minutes) it will start and then run for 30-60 seconds. During this running time it is smooth, hitting on all cylinders, and sounds good....

However, after 30 seconds it dies and will not restart until it has sat for 30 minutes.

During the "dying" it shows spark at the timing light and Fuel Pressure on a guage... During its no start period, it continues to have spark at each plug wire, and continues to have 29.6psi of fuel pressure at the guage...

So I've got to think its FI related. I swear, I've tested everything except for the cold start sensor, and TPS....
but I guess I had better start over...

Is there something with this type of symptom I should check first?

I thought FI points, but have tried 3 sets yesterday to no avail. I also ohm tested the 25 pins on the ECU and they were all fine.

Is there something in the regulator board that would cause this problem, other than the power to the Fuel pump (since I have pressure still).

thanks everyone.
brant

[brant]

Brad,

first let me thank you for your time...
I'll next jump/bypass the Fuel pump relay....

I can hear the pump when key is in (before motor running).. and I have fuel pressure on the guage even when cranking it and it doesn't start... so I thought I was safe on the fuel pressure side of the equation...

I'll double check the routing of the lines too... but before the problem became a no-start it used to be intermittent...

and 2 seperate weekends I put 500miles on the car each, with this as an infrequent intermittent problem... so I thought I had the fuel lines working then.... but can't hurt to double check...

hey if you don't tow me out a roller in october, maybe I should try Jenny's Idea and pay you to stop and fix this sucker....ha...

oh.. almost forgot.. ignition.. I had put a crane in it, and was suspecting that so I sent it back to the factory in FLA.. they said it was fine. I put the points back in... I have FLASH on the timing light at all 4 plug wires when I'm turning it over and it won't re-start.

I'm liking the regulator board Idea... I know there are the 4 white wires (5 actually) on the board in the 4prong pin... Is there any other wires on the regulator board that control/feed the FI?

have a good night
brant