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Discussion Starter · #1 ·
On my newly rebuilt motor the #1 and #3 cylinders are receiving way to much fuel, so much fuel that the plugs cannot fire. (Timing is correct, and we have good spark to the plugs.) I have two motors and have tried swapping the injector rails w/ regulator, but it does not seem to make a difference. Any ideas would be great. Thanks.
 

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Try switching the injectors from cylinders 4 & 2 into cylinders 1 & 3 and see if you're still getting a rich mix.

Chances are the injectors are screwed up. The stock ECU uses PWM to fire the injectors, and if cylinders 2 & 4 are fueling correctly and 1&3 are messing up, chances are that your injectors are screwed up.

I'm not familiar enough with the wiring harness to tell you how they're hooked up, but you may want to check the haynes manual.
 

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Discussion Starter · #3 ·
My understanding is that the injectors fire all at the same time (about 3-4 shots per stroke) if this is true and the regulator is vacume operated wouldn't not matter what position the actuall injectors are in. I am not sure what you mean by the injectors being screwed up, are there specific injectors for each position??
 

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Discussion Starter · #5 ·
OK, thanks alot, and just to make certain I am clear on this, the injector that is set in #3 has to go in number 3, I cannot take the injector off and put it into another position. Is that correct based on what you know
 

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Er... I'm not sure if the injectors will fit into the other ports. I think they will.

But about the "firing" order for the fuel injectors, it's sequential, not "dump" type like in the EFI 1st gen escorts.
 

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Discussion Starter · #7 ·
Well, I found they do fit in the other ports. We are going to swap the ones in 1 &3 into 2&4 and see if the problem follows.

We did disconnect the wiring plug from the injectors on 1 & 3 and they still continued to dump fuel. Now from what I understand about the injectors they should be closed if there is no elec. currrent to them. Anyone know if that is true cause if it is then it would appear to that the injectors are stuck open
 
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