Fuel in oil!!!

[Duramax52513]

I changed my injectors about 3 weeks ago and I have fuel in my oil. Any ideas on why this occurred, does this mean the injector cups aren't sealed?

 

[Awenta]

Leaking return


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[Awenta]

LB7 Tool No Mechanic Can Live Without

https://r.tapatalk.com/shareLink?ur...9&share_tid=36759&share_fid=8839&share_type=t


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[jamesashtoncan]

Could be. What brand of injectors did you get? Also id check the fuel regulator. Mine had a broken gasket causing it to leak fuel in the oil

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[Robby05]

Torque every thing down to spec under the valve covers? Was it leaking fuel into the oil before you replaced injectors?

 

[Kamilmk]

Just went through the same issue with Awenta on my truck. We bet on leaky return line, exactly what it was. Run a vacuum test on each side. Check if it holds it.

15psi for 30 minutes, I believe that's it.

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[Duramax52513]

Injectors were from Lincoln diesel, yes there was fuel in my oil before I put new injectors in, that's what made me change them.

 

[Awenta]

Injectors were from Lincoln diesel, yes there was fuel in my oil before I put new injectors in, that's what made me change them.

Vacuum test. If not you've got leaking high pressure lines or a leaking cp3


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[2004LB7]

If you find it is a leaking return line gasket, give em another 1/8 to 1/4 turrn. The specified torque only just barely starts to crush them. I think this is why so many have this problem.

 

[c20elephant]

Thought I had seen this awhile back while perusing one day.

http://www.duramaxdiesels.com/forum/showthread.php?t=36759&page=2