Got a misfire injector not fueling on No3

[Barry Ashcroft]

Just gone to take car out and reversing of the drive I could hear a misfire, I have found out that no3 injector is not putting any fuel into the engine.

Any thoughts of what I can test or try before I arrange recovery to a garage.

Barry

[SeiW500]

Barry, try swapping injectors and see if it's the injector or a problem with lead/power/fueling

[Barry Ashcroft]

Does anybody know if you can swap the leads around on the injectors, ie do they bank fire or are they sequential.
Before I remove the fuel rail.

[Barry Ashcroft]

Injector is fine, I have no power to the injector. Does the injector wiring lead striaght back to the ecu?

[VARLEYHYD]

Barry Ashcroft said:

Injector is fine, I have no power to the injector. Does the injector wiring lead straight back to the ecu?

Get my book out Barry!

Try contiunity of wire on loom to big bulkhead plug behind airbox

White wire pin R

Not sure which neg


G

[Barry Ashcroft]

I have Grahams Sag manual is the ecu the same on a Tam to a Sag if so it must be a break in the wiring somwhere as they bank fire 1,2,3, & 4,5,6,
Looks to be a negative trigger

Thoughts?

[VARLEYHYD]

Barry Ashcroft said:

I have Grahams Sag manual is the ecu the same on a Tam to a Sag if so it must be a break in the wiring somwhere as they bank fire 1,2,3, & 4,5,6,
Looks to be a negative trigger

Thoughts?

Do a temporary neg loop then barry to 1 or 5

G

[Barry Ashcroft]

I think they bank fire but would like some confirmation before i go joining wires. I have traced it back to the bulkhead plug and I have continuity on the engine loom
I'm going to drop the ecu and try the other way

[Barry Ashcroft]

Graham does you ecu have 3 plugs or 1 large one as the manual diagram looks like 1 large plug and it has an obd plug which mine does not have i have 3 plugs on the ecu

[VARLEYHYD]

Barry Ashcroft said:

I think they bank fire but would like some confirmation before i go joining wires. I have traced it back to the bulkhead plug and I have continuity on the engine loom
I'm going to drop the ecu and try the other way

Just bring the neg on 3 back to ground, leave the white alone

G

[Barry Ashcroft]

Confused now mate

The injector has a red & white going to it the red has +12 I presume the white is a neg control from the ecu
With my meter on it I get nothing
If i test the red seperatly I have +12
all the others have a voltage which changes with revs

[VARLEYHYD]

Barry Ashcroft said:

Confused now mate

The injector has a red & white going to it the red has +12 I presume the white is a neg control from the ecu
With my meter on it I get nothing
If i test the red seperatly I have +12
all the others have a voltage which changes with revs

Sorry Barry,

Sag is different then,

Just go steady and you will crack it, its a wire somewhere i think

[Barry Ashcroft]

Just linked inj 2 wiring onto inj 3 and now have 6 cylinders

Think the fault must be between the ecu and the bulkhead