fueling

[clipperjay]

Whats the resistance of each injector?
Do you have the correct fuel relay and is it in the correct slot?
What condition does the knock sensor look like?
You could have a break in the ECU loom that's causing the enrichment
The ECU has a limp mode that enriches fuel by 25% so it does not run lean I've had two bad ECU's in the past and hall senders and coils I've learned to just borrow working ones before shelling out and testing the parts I own on other donor cars.

[gazareth]

are the new injectors the right ones? what colour are they? what about the regulator? is it the correct 3 bar one? if I ever get a running fault I change one thing at a time and if there is no improvement I change it back and move on to the next suspect. that way there is less chance of introducing another fault in to the system.

[notenoughtime]

sticky plunger in metering unit?

digifant not the K-jet. 

First common question: Does the fuel pump prime for 3 seconds with ignition on or run continuously?

maybe i should pay more attention!!!! 

[Mr Blue]

When ever I have a digi over fuel its through timing (running rich) or a faulty maf sensor.

Have you checked for a good spark? Swapped the coil just to rule that out?

[Craigwilson]

well the good thing is I have 2 1991 8vs so yes I so steal parts from my old man....... hence stealing his temp sender ecu and air flow Meter and with all those parts his runs perfectly. I replaced the spark plugs the other day and for the first while it did start right on key for a while but still idled badly, but now it's back to not starting because the plugs are drowned.

the injectors are yellow same as the originals and came from a PB and they were all opening and spraying a nice even pattern when I checked them.

could it be related to my spark?

I know the timing is spot on because I fiddled with it too see if that was an issue

[Craigwilson]

as for the knock sensor it looks okay, I removed it and tightened it to 20nm as I was following Johnny's setup guide. would this be affecting the starting?

one thing I did notice is I hade about 5 ohms of resistance on a couple of wires going to the ecu. isn't this high for a simple wire ?

[gazareth]

knock sensor should not affect starting as it only comes into operation when engine temp gets up a bit. when I was testing all the wires from ecu on my own mk2 I don't recall any resistance in any of them. was getting a buzz on multimeter from all of them. which wire you getting resistance on?

[Craigwilson]

I was getting about 4ohms on the brown/green wire from the blue sender, the meter was beeping but because there is still continuity but I don't reckon wires should be resistive

[clipperjay]

I was getting about 4ohms on the brown/green wire from the blue sender, the meter was beeping but because there is still continuity but I don't reckon wires should be resistive

That's within tolerance 3.5 @ 10C so depends upon temp TBF.

Still think you have a bad earth in the loom somewhere?
 

[Craigwilson]

it's about 3 degrees in Glasgow, where would I find these grounds and how do I check