I got excessive amount of fuel in crank case,water in fuel light is on,and runs rough

[LBZ]

Before you go blowing a pile of money check your fuel return lines on your injectors first and make sure you don't have a cracked tube (lb7) or leaky hose/broken plastic fitting (lly) or leaking banjo fitting (both models).
Common problems moreso than cracked injector bodies in a completely stock truck that both result in fuel in the crankcase.

 

[LBZ]

Merged the two same threads.

 

[The Kansan]

Ok so changed the fuel filter today and truck runs way better no hesitation and when I get on it while driving it performs as its suppose to but I still go white smoke which has a raw fuel smell which I know is a sighn of bad injector and you guys told me that one of them can be cracked which is why there's fuel in the crank case but if that's true will it still run fine even with cracked injector

It may seem like it runs fine but with that extra fuel entering whatever cylinder or cylinders it will cause them to run hotter and is not very good on pistons. Glad to see the fuel filter helped one of your problems. Im curious to see what your balance rates look like.

 

[2004duramax3500crewcab]

LBZ I'VE BEEN TOLD IF THE INJECTORS haven't been changed recently t hen it wouldn't be the return lines but please inform me has that been a problem before and what's a good way to check the return lines if ones cracked just tear it down and look or is there a way to tell without tearing it down and if there is a return line that's cracked wouldn't it make it run rough due to not enough fuEl getting to the cylinder please let me know your thoughts LBZ

 

[The Kansan]

You dont normally get a cracked return line just leaks from the banjo fittings. It wouldnt run much different if one was cracked or leaking bc that is after the injector so its still getting the fuel it needs just leaking leftover fuel from what the injector doesnt inject. The thing is if you tear all that apart and it hasnt been apart for a while and your engine is pretty dirty (which most are) you are going to loosen the hard lines to the injector and dump a shit ton of dirt and debris down in the injector so once you do that your gonna need a set of injectors anyways.

 

[2004duramax3500crewcab]

Ok so I called the dealership and asked how much to do the balance ratesheet on the injectors and they said with how much fuel I'm getting into the crank case and with it running good most likely it's a return line leaking so if I get the balance rates done and they all read good is it most likely gonna be the return lines if the injectors are reading fine ???

 

[murguia]

Need help as well 2005 lly fuel in oil balance rates at 3, 1, 2, 2, -1,-3,-2,-2 at 6mm3 blowing black smoke on any acceleration, loss of power

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[2004duramax3500crewcab]

Just an update I changed the banjo seals on the return line and it fixed my problem and under the valve covers where pretty clean thank God just figured I'd give some updates

 

[The Kansan]

Just an update I changed the banjo seals on the return line and it fixed my problem and under the valve covers where pretty clean thank God just figured I'd give some updates

good to hear:thumb: