Leak from under balancer

[UPnGONe]

I would start with check all the lines making sure none came loose it doesn't take much to make a leak at 20k+ psi

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[02duramax]

Just did a check on balance rates, I don't get it.. Wtf

 

[02duramax]

Also a cp3 log.

 

[02duramax]

didn't see anything out of unusual in balance rates. Before I started truck I did have some codes that were there p1093, p0700. Started truck then the codes just went away, Drove truck and drives great, while efi was hooked up, got back home and let the truck sit for 2 min and checked dip stick and it made a little bit of fuel oil. So I do have a leak somewhere

 

[02duramax]

So does anyone see anything out of ordinary in the pics I posted with rail pressure/ balance rates etc. ?

 

[02duramax]

I am shunned


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[JoshH]

I already told you what I thought it was. Good balance rates don't always mean injectors are good. I also wouldn't bother with fixing any leaks until you get it to quit putting fuel in the oil.

 

[02duramax]

So what do I do next? What is the process to elimination of which injector is bad?


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[02duramax]

Looking at my cp3 log, does my rail pressure look low


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[JoshH]

Looking at my cp3 log, does my rail pressure look low


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It's a tad below desired, but it's never going to be right on exactly what desired is. It isn't low enough that I would be concerned with it.

 

[LWATSON]

So what do I do next? What is the process to elimination of which injector is bad?


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You really should consider putting a whole set in unless you find one with a cracked body or another issue with a line or an individual injector.

 

[02duramax]

I would love to put a whole set in, I have 3 duramaxs to upkeep. Not cheap.


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[02duramax]

Is the crack on the injector just obvious or do u gotta really find it


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[02duramax]

Quick question, do u have to have valve covers off for a vacuum test on return rates?

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[JoshH]

No

 

[02duramax]

Update. Finally got the drivers side upper valve cover off and commanded 160 mpa to the injectors and looks like # 4 was spraying all over the place. #4 being second one back on drivers side from the front of vehicle. The rest of the drivers side look to be ok. Haven't touched passenger side yet. Must be a cracked injector?