Injector Return Rate Test

[THEFERMANATOR]

thanks, lots of good information in that! so let me make sure, if an injector returns more than 18ml over a 30 sec time interval it needs to be replaced? and that 30 second cranking time is actually cranking or running either one??

The GM spec is 4 ML in 15 seconds of cranking. 18ML would be a JUNK injector. And don't forget to also check the return of the CP3 to make sure it isn't failing.

 

[brewmax]

Thanks for clarifying this. I'm going to run the test later today I'll post my results. Thanks again!! You guys have been a great help.


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[brewmax]

I had two that were returning 6 ml and I replaced them, still having the 0087 code. what is the return spec for the cp3?

 

[THEFERMANATOR]

I had two that were returning 6 ml and I replaced them, still having the 0087 code. what is the return spec for the cp3?

CP3 spec is 35ML of fuel in 15 seconds of cranking.

 

[brewmax]

Ok thanks could you clarify if this needs to be done by cranking the starter over and no starting it. If so what do I unplug to keep the engine from starting??


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[redws6rocket]

I can always tell if I have a bad one because it fills the hoses very fast, the good ones take a long time to fill up the hose.

 

[redws6rocket]

http://buy1.snapon.com/catalog/item...roup_ID=675572&store=snapon-store&dir=catalog

One of these I use, pull the starter relay

 

[brewmax]

Thanks


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