02 Dmax making oil
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02 Dmax making oil

  1. #1
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    Default 02 Dmax making oil

    Just got my truck back from a shop about month ago to end having the FICM changed. During t/s they found inj leads to #2 and #4 loose. They tightened em down and allk seemed good. Last week noticed oil press down to 20 psi. Changed the oil and got close gals of oil fuel mix. I'm looking to do this myself (somehow lost confidence in the shop). I've read that the return lines are a pretty common source to leak. My question is can I rule out a stuck injector dumping fuel into a cyl. My logic tells me that if that were the case, I would see something coming out the exhaust. So I'm hoping it is either the return line or one of the supply lines from the rail leaking. BTW changed all 8 injs last June and not a drop leaked until after I got it back so I think it's too much of a coincidence. Help.....

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    Senior Member EVILFORCE's Avatar
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    Could be the injectors them self leaking. If someone does not pop in with the TSB of how to check it I will get it for you tomorrow.
    No Fool Like A Old Fool is there?

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    Also I think I may be the only guy left not running around with a $3000+ Tech II scanner in my garage.

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    mo balls than $cents$ IMPATIENT 1's Avatar
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    time for all new injectors brother, hate to tell ya that, but it has a few injectors with cracked return passages in them and it's puking fuel into the crankcase. i see trucks getting pulled in here all the time with fuel soaked tailgates from the engine filling up with deisel and flooding over. good thing tho is that deisel is a lite oil and ive neverrrrr seen it hurt a dmax to date if you're under the special policy on mileage, they wont cost ya but 100bucks at the local dealership call your local dealer, give em your info and mileage and have them check to see if you still fall under special policy for replacement, bet ya do.

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    mo balls than $cents$ IMPATIENT 1's Avatar
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    Quote Originally Posted by EVILFORCE View Post
    Could be the injectors them self leaking. If someone does not pop in with the TSB of how to check it I will get it for you tomorrow.
    you've gotta pull a vaccum on the return side of the fuel system on the motor, its a straight up pain in the ass to do fuel in the crankcase is a sure sign of cracked injectors tho, so its not a hard fix, jus a expensive 1 if he's out by mileage lol

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    I am out by time they did extend 7 years and 200,000
    i was out by 7 months still got to do the job seems like removal of alot
    of shit . i can get the injectors my shop price for personnel vehicle is 1800 so is the job not bad ??
    dom

  9. #7
    mo balls than $cents$ IMPATIENT 1's Avatar
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    its jus pulling bunch of shit outta the way bro, if you have any kinda wrench experience, its not that hard to do. worst part of it is all the damn allen bolts, and there's 1 on the driver's side valvecover along that back that's a straight bitch to get at, sometimes i've had to beat back the firewall as much as possible get em, other times i can use a 6mm bit and put a 1/4 wrench on that and get em out, jus depends.
    the passenger side is by far the easiest, so start there that way when you get to the bitchhhhh side(drivers) you'll understand how to do it. its easier to have the injector pulling tool also, but ive done it without before too.

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    my condolences!
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  11. #9
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    I'm not doubting anything here but is there a way of checking the return line leaking and not the injector itself. Just did all 8 last June with remans from Pensacola Inj. I haven't heard the best reviews about their remans but hell I haven't heard of a reliable LB7 replacement injector either. And you are right, pax side is probably a couple hour job, with the driver side being the challenge (a 5mm shallow 1/4 dr bit socket made it's way to my toolbox in case I ever had to do these again). What is the injector removal tool? When doing them last time it consisted of channel locks to wiggle em loose and then prying them up.

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    Senior Member JakeC.'s Avatar
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    the first thing i would check is all of the fuel suply lines on the 2,4,6,8 cylenders. if the had to tighten the leads for the 2 and 4 injectors that means they had the valve covers off and the high pressure fuel lines. a lot of techs dont clean the lines and they dont reseal well. i would start by pulling off all the fuel lines on the driver side and check the sealing surface for corrotion. that would be a hole lot cheaper than replacing injectors, and it also makes sence as to why its only now happening after the shop was in it. i have seen it plenty of times before. good luck

  13. #11
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    Quote Originally Posted by Backtanner View Post
    I'm not doubting anything here but is there a way of checking the return line leaking and not the injector itself. Just did all 8 last June with remans from Pensacola Inj. I haven't heard the best reviews about their remans but hell I haven't heard of a reliable LB7 replacement injector either. And you are right, pax side is probably a couple hour job, with the driver side being the challenge (a 5mm shallow 1/4 dr bit socket made it's way to my toolbox in case I ever had to do these again). What is the injector removal tool? When doing them last time it consisted of channel locks to wiggle em loose and then prying them up.
    Unfortunately, a Tech 2 or EFI Live is going to be your best friend here.

    Pensicola injectors seem to be hit or miss. Some people have great luck with them.

    After an install of injectors that is getting fuel in the oil, 99.9% of the time is caused by few things. Leaking fuel lines, injector cups not seated properly, the copper washer in the bottom is not seal properly, or an o-ring on the injector got cut or damaged while doing the install.

    I agree though, that if the valve covers came off, then it could very well be one or more of the high pressure lines not sealing up very well. Those lines were actually designed to compress around the fitting the first time when they are installed in the factory, and if removed, those lines are supposed to be replaced. They were only designed to be tightened one time, but a lot of people still just re-use them. So its kind of luck of the draw if you get them to line up perfectly again or not.

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