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ford ef injector not firing 

 

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 Post subject: ford ef injector not firing
Posted: Sat Aug 28, 2010 10:30 am 
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as it says in the title im having trouble with an injector in my car,

the injector itself if fine, i swapped the injector into another cylinder and put the one that was working into the cylinder that isnt firing anyway both injectors function correctly,

im thinking maybe ecu mayb i dunno or wiring somewhere

any help please guys would be great.

Cheers Brad

 

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 Post subject: Re: ford ef injector not firing
Posted: Sat Aug 28, 2010 3:56 pm 
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Check wiring, but ECU is a posiblity too. The EFs are wired for Sequential injection (but work group) so there must be a driver for each Injector.

My first suspicion would be the join in the engine bay to the engine...

Nigel
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 Post subject: Re: ford ef injector not firing
Posted: Sat Aug 28, 2010 4:33 pm 
Getting Side Ways
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Nigel wrote:
Check wiring, but ECU is a posiblity too. The EFs are wired for Sequential injection (but work group) so there must be a driver for each Injector.

My first suspicion would be the join in the engine bay to the engine...

Nigel


where abouts can i find this?

umm the other injectors work fine though

 

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 Post subject: Re: ford ef injector not firing
Posted: Sat Aug 28, 2010 4:36 pm 
Getting Side Ways
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back of the inlet manifold - im not sure what the connector looks like for your model. Im suggesting a single wire may have failed if your lucky.

That said, Ive blown the injector drivers on 3 seperate ECU's in a past life.

Nigel
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 Post subject: Re: ford ef injector not firing
Posted: Sat Aug 28, 2010 6:30 pm 
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check the connectors in the injector plug,
then check to see if there is 12v on the power line on that injector plug, if it has 12v with ignition on? check to see if the other wire is pulsing with a test light while the engine is running, if no pulse its either a break in the wire or an injector driver in the ecu has died...
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 Post subject: Re: ford ef injector not firing
Posted: Sat Aug 28, 2010 11:23 pm 
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ok so are the ecu drivers repairable or what?

anyone got a spare ef ecu i can borrow to see it its the drivers

on the injector plug which wire is the 12 volts and for the test light can i ground it anywhere?

 

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 Post subject: Re: ford ef injector not firing
Posted: Sun Aug 29, 2010 9:23 am 
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12v is the side with the red wire.. :roll:
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 Post subject: Re: ford ef injector not firing
Posted: Sun Aug 29, 2010 10:18 am 
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TROYMAN wrote:
12v is the side with the red wire.. :roll:


ok thanks i'll get out there with the multimeter.

also i dont have a test light (adds to shopping list)
can i use a multimeter for the pulse as well if i can what setting should i use?

 

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 Post subject: Re: ford ef injector not firing
Posted: Sun Aug 29, 2010 1:39 pm 
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ok i put a multi on the terminal and with the engine running i get 14v, i also tested the first cylinder which is working and also get 14v,

the injector is fine as i swapped the 1st and 2nd cylinder to test them and all is good,

does anyone know what setting on the multimeter to use to check for pulsing of the other wire?

is there any other connections i should check before i replace the ecu?

 

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 Post subject: Re: ford ef injector not firing
Posted: Sun Aug 29, 2010 1:50 pm 
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the pulse is an earth pulse, just run the positive of the multimeter to 12v and use the earth of the multimeter to test the other wire in the injector plug..

it should show some voltage when pulsing
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 Post subject: Re: ford ef injector not firing
Posted: Sun Aug 29, 2010 11:19 pm 
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Have ECU out of a EF Futura here that you can borrow for a test.
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 Post subject: Re: ford ef injector not firing
Posted: Sun Aug 29, 2010 11:37 pm 
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Have ECU out of a EF Futura here that you can borrow for a test.
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 Post subject: Re: ford ef injector not firing
Posted: Mon Aug 30, 2010 12:27 am 
Getting Side Ways
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SWC wrote:
Have ECU out of a EF Futura here that you can borrow for a test.


thanks paul that would be wonderful

 

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