diesel fuel in engine oil

gregatgr · 11-04-2009, 01:44 AM

we have a 2007 Dodge Ram 2500 6.7L Cummins diesel. We have been getting diesel fuel in the engine sump, 3-4 quarts every few months. we have checked for leaks in the injectors by using flourescent tracer die in the fuel, heavy load road test, remove valve covers and check with black-light but we are not getting any signs of tracer die. how can we doagnose where this fuel leak is coming from? there are no obvious wet fuel indications

**SOUTHERN SMOKE** · 11-04-2009, 01:55 AM

check injectors may have to get them flow tested, what about the return line? how much pressure? headgasket? it could be just the smallest issue, how is the truck running? hard start, rough idle? need a few more details.. you may have an injector sticking open after shutdown, this can overload a cylinder and melt it down, keep your eyes peeled open...

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gregatgr · 11-04-2009, 02:11 AM

have not checked return line pressure, truck is starting, running & performing perfect, no complaints from owner, has Predator/Dr Performance power module installed, not sure what model, truck is used fairly regularly to line-tow vehicles in crash barrier tests as part of their businees operation, so under short severe loads

clark4131 · 11-04-2009, 10:54 AM

If you have your EGR and DPF are intact, it's likely coming from the regen cycle when the DPF is burning off. Intact 6.7's like to grow oil...SC

__________________
'08 2500HD 6.7L SXT/SLT MegaCab, Smarty 6.7ME, EDGE Insight, AirDog II, BMK-21, Bilstein 5100's, HBS Level Kit, Cooper Zeons on 20's, EGR MIA, Stealth DPF/NOx, Tank Vent Mod, Mag-Hytec Pans, Thuren Trackbar, DSS Steering Brace, RCX Dual Stabilizers

blackmega3500 · 11-04-2009, 06:53 PM

I am not going to say I am positive but I have read around hear of other people having the same problem and this is "supposedly" the result of the fourth injection cycle that takes place during regen.

__________________
09 Black megacab 3500 DRW 6.7l auto. edge w/ attitude (hot) , quad boost fooler, s&b dry cai, flo-pro stage 2 dpf delete with h&s sims, egr unplugged......for now

Drbrodent · 11-04-2009, 07:32 PM

Its true, my truck used to make oil....diesel in the oil, deleted the EGR....problem solved!

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2007 2500 6.7, 68RFE, H & S stage 2 DPF delete, H & S EGR/EGR cooler delete, Smarty, Edge Insight, 2" HBS, 33" Toyos on 18" wheels

socodieselpower · 11-05-2009, 10:10 PM

yeah i would say cylinder wash for sure. mine makes about two quarts per 5k miles i drive.

__________________
2008 6.7l 2500 4x4 slt 68rfe. procomp 4" lift 17''moto metal 954's 285 70/17 hankook gutted tube modified canootervalve and a carseat. stockish as long as i'm married or making payments

600Micro · 11-06-2009, 01:12 AM

Yep, Regen.

No regen no dilluted oil

11-04-2009, 01:44 AM	#1 (permalink)
gregatgr Newbie Join Date: Nov 2009 Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts gregatgr's Truck Pics	diesel fuel in engine oil we have a 2007 Dodge Ram 2500 6.7L Cummins diesel. We have been getting diesel fuel in the engine sump, 3-4 quarts every few months. we have checked for leaks in the injectors by using flourescent tracer die in the fuel, heavy load road test, remove valve covers and check with black-light but we are not getting any signs of tracer die. how can we doagnose where this fuel leak is coming from? there are no obvious wet fuel indications

11-04-2009, 02:11 AM	#3 (permalink)
gregatgr Newbie Join Date: Nov 2009 Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts gregatgr's Truck Pics	diesel fuel in engine oil have not checked return line pressure, truck is starting, running & performing perfect, no complaints from owner, has Predator/Dr Performance power module installed, not sure what model, truck is used fairly regularly to line-tow vehicles in crash barrier tests as part of their businees operation, so under short severe loads

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11-04-2009, 10:54 AM	#4 (permalink)
clark4131 Cummins Nut Join Date: Sep 2008 Posts: 473 Thanks: 1 Thanked 9 Times in 9 Posts clark4131's Truck Pics	If you have your EGR and DPF are intact, it's likely coming from the regen cycle when the DPF is burning off. Intact 6.7's like to grow oil...SC __________________ '08 2500HD 6.7L SXT/SLT MegaCab, Smarty 6.7ME, EDGE Insight, AirDog II, BMK-21, Bilstein 5100's, HBS Level Kit, Cooper Zeons on 20's, EGR MIA, Stealth DPF/NOx, Tank Vent Mod, Mag-Hytec Pans, Thuren Trackbar, DSS Steering Brace, RCX Dual Stabilizers

11-04-2009, 06:53 PM	#5 (permalink)
blackmega3500 Cummins Fan Join Date: Aug 2009 Posts: 95 Thanks: 3 Thanked 0 Times in 0 Posts blackmega3500's Truck Pics	I am not going to say I am positive but I have read around hear of other people having the same problem and this is "supposedly" the result of the fourth injection cycle that takes place during regen. __________________ 09 Black megacab 3500 DRW 6.7l auto. edge w/ attitude (hot) , quad boost fooler, s&b dry cai, flo-pro stage 2 dpf delete with h&s sims, egr unplugged......for now

11-04-2009, 07:32 PM	#6 (permalink)
Drbrodent Cummins Nut Join Date: May 2009 Location: Utah Posts: 368 Thanks: 24 Thanked 31 Times in 26 Posts Drbrodent's Truck Pics	Its true, my truck used to make oil....diesel in the oil, deleted the EGR....problem solved! __________________ 2007 2500 6.7, 68RFE, H & S stage 2 DPF delete, H & S EGR/EGR cooler delete, Smarty, Edge Insight, 2" HBS, 33" Toyos on 18" wheels

11-05-2009, 10:10 PM	#7 (permalink)
socodieselpower Cummins Fan Join Date: Nov 2008 Location: Calirado Posts: 95 Thanks: 7 Thanked 0 Times in 0 Posts socodieselpower's Truck Pics	yeah i would say cylinder wash for sure. mine makes about two quarts per 5k miles i drive. __________________ 2008 6.7l 2500 4x4 slt 68rfe. procomp 4" lift 17''moto metal 954's 285 70/17 hankook gutted tube modified canootervalve and a carseat. stockish as long as i'm married or making payments

11-06-2009, 01:12 AM	#8 (permalink)
600Micro Newbie Join Date: Apr 2009 Posts: 9 Thanks: 0 Thanked 0 Times in 0 Posts 600Micro's Truck Pics	Yep, Regen. No regen no dilluted oil