diesel injectors

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diesel injectors

Postby glenn » Sun Jan 26, 2014 8:30 pm

Hi all
I'd be really grateful if someone could explain to me what's happening in this waveform to the injector, it's a 2L 2007 reno traffic 11, I've been told that these van's are famous for injector failure the van tick's over few sec's then cuts out and the fault code injectors open circuit, now I don't scope much at all so this is auto set up my trace is nothing like the one shown on the pico, now does this trace prove the injector faulty?

many thanks in advance

Glenn
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Re: diesel injectors

Postby Avdr » Mon Jan 27, 2014 1:00 pm

Have you tried comparing it to another injector?
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Re: diesel injectors

Postby glenn » Mon Jan 27, 2014 1:48 pm

Hi Avdr
Cheers for reply, well no to be honest I contacted a diesel specialist in ref to this and was convinced its the injectors, so I'm in the process of replacing them, so what wanted to know is if this trace I've got proves a faulty injector? just because its so different to the reference one

thanks
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Re: diesel injectors

Postby Avdr » Mon Jan 27, 2014 3:02 pm

Don't take the reference waveforms as gospel every time.
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Re: diesel injectors

Postby Robski » Mon Jan 27, 2014 3:46 pm

Did you deploy 3X channels at this ?
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Re: diesel injectors

Postby KimAndersen » Mon Jan 27, 2014 4:01 pm

Hi

It may be the injectors there are faulty or it could be the power supply to the injectors there are interrupted momentarily or it may a short-circuit in wiring going to the injectors - if you are getting a DTC for open circuit !!!

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Re: diesel injectors

Postby glenn » Mon Jan 27, 2014 7:16 pm

Avdr wrote:Don't take the reference waveforms as gospel every time.


This is the problem, how do I know what to look out for if I cant use the reference waveforms?

sorry

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Re: diesel injectors

Postby glenn » Mon Jan 27, 2014 7:18 pm

Robski wrote:Did you deploy 3X channels at this ?



Hi Robski, I've only scoped a handful of times forgive me not sure what you mean :?


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Re: diesel injectors

Postby Robski » Mon Jan 27, 2014 7:20 pm

This is the problem, how do I know what to look out for if I cant use the reference waveforms?


Build your own library from known good motors.

DTC's ?

An answer to earlier question too ?
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Re: diesel injectors

Postby glenn » Mon Jan 27, 2014 7:29 pm

Robski wrote:
This is the problem, how do I know what to look out for if I cant use the reference waveforms?


Build your own library from known good motors.

DTC's ?

An answer to earlier question too ?


It just so happens I'm at work still so I have the codes right here
P2149 fuel injector A group supply voltage circuit open
P2146 """ """""""" B """""""" """"" "" """" """""
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