Another no-start situation, 2.0 d-jet, Fixed! Dirty trigger points! Options

[arne]

Car is ‘73 2.0 with stock d-jet. Has been running fine, just passed a PPI last Thursday. Late yesterday afternoon I started it to move it. Started fine, ran normally for 15-20 seconds, then quit suddenly. No sputter, just quit as if the ignition was switched off. Since then it will crank over normally, but no fire. Occasionally a very weak cough, but generally not even that.

I immediately checked for spark, and that is good all the way to the plugs. So it is fuel related.

I’ve got fuel pressure, the pump runs it’s brief priming bit when the ignition is switched on, and appears to run while the engine is cranking.

The sudden nature of the failure leads me to think it is electrical, not fuel supply as such. Also doesn’t sound like trigger points, if I understand those right it seems unlikely that both sides would fail simultaneously.

I’m leaning toward a bad wire or connector of some sort, or possibly a D-jet component that has failed electrically.

Any suggestions on likely causes are welcome!

[euro911]

If you are hearing the pump running, sounds like your relay board and relays are good. Should you need a relay in an emergency, you can pull one from either headlight circuit in the front trunk (IMG:style_emoticons/default/idea.gif)

Have you checked the injector's plugs to see if there's voltage with the VOM's positive lead on the (+) terminals when cranking? ... (and with the (-) lead to ground). Then check the plugs' other terminals to ground.

That would narrow it down to bad injector ground(s) or the trigger points.


A failed ECU could also be the culprit, but rarely the case ... check the ECU plug & cable too.

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