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2015 isx 15 cummins with fuel in oil. just installed
2015 isx 15 cummins with fuel in oil . just installed injector cup rings because of cups leaking anifreeze in fuel replaced orings on injector and had code for fuel rail pressure did update on fuel pu… read more
NicholasM1019
NicholasM1019
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Vocational, Technical or Trade School
596 satisfied customers
I have a 2003 mack with a isx 500 low power but runs smooth
i have a 2003 mack with a isx 500 low power but runs smooth it just doesnt pull a load well, fuel pressure is good,exhaust is clear … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
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Isx cummins we have low oil pressure also over full oil
isx cummins we have low oil pressure also over full oil level it does smell like fuel … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
Getting fuel in the oil I have replaced injectors o rings
getting fuel in the oil I have replaced injectors o rings Put new head a year ago what else could cause this Its a Cummins isx engine ser number 79216434 … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
464 satisfied customers
I am getting fuel in the oil on a isx cummins 2011 engine.
i am getting fuel in the oil on a isx cummins 2011 engine … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
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99 Detroit 12.7 L Fuel mixing in oil. Engine has a miss. How
99 Detroit 12.7 L Fuel mixing in oil. Engine has a miss. How can I find out which injector is bad. With Detroit software. No injector codes present… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
464 satisfied customers
2010 Maxxforce dt Came into shop with a crank no start, it
2010 Maxxforce dt Came into shop with a crank no start, it got injector pucks and a high pressure oil rail gasket set. Bus runs now but exsesive knocking in higher rpm sound like a miss. No codes, I d… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
464 satisfied customers
Just doing some research on an issue with coolant ending up
Just doing some research on an issue with coolant ending up in my fuel/water separator, Cummins ISX CM 2250 … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
464 satisfied customers
I have a 565 cummins. Went into Pape Kenworth 2 wks ago. Had
I have a 565 cummins. Went into Pape Kenworth 2 wks ago. Had a cylinder test done and an oil cooler replaced, as well as a valve adjustment. There was a slight miss in the exhaust. Lost 10 lbs of oil … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
464 satisfied customers
Putting diesel fuel into the engine oil. 2001 Freightliner
Hope to fix myself. Haven't started yet. Looking for a direction to start … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,824 satisfied customers
What is the actual percentage of Fuel burn in the cylinder
Second opinion] What is the actual percentage of Fuel burn in the cylinder for an ISX 15 500? Normal Diesels are about 70% i have heard the ISX 15 500 is about 85%. Can you clarify for me. Thanks.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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My warranty company wont pay the repair of my ISX engine
My warranty company wont pay the repair of my ISX engine because they claim the injector cups went bad and are not covered, I believe they should be covered as the warranty states that injector seals … read more
FIX-IT
FIX-IT
Comercial transport technician
Vocational, Technical or Trade Scho
829 satisfied customers
I have an ISX 565 signature cummins in a 1999 379 Peterbilt.
I have an ISX 565 signature cummins in a 1999 379 Peterbilt. I think I am getting oil in the fuel. It uses about 1 gal of oil every 4000 miles. The fuel is grey in color in the tank and in the filter.… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,824 satisfied customers
I have a 2008 cummins isx esn#79233704 and have a problem with excessive exhaust soot in t
I have a 2008 cummins isx esn#79233704 and have a problem with excessive exhaust soot in the fuel system, we tested & replaced the fuel injectors also cleaned the tanks out but the the soot is still a… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,824 satisfied customers
I have a Cummins PAC Car that has Diesel in the oil. We have
I have a Cummins PAC Car that has Diesel in the oil. We have changed the injectors thinking a top O'ring and still have the problem. Other than the Fuel Pump drive seal, what else would cause this?… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,824 satisfied customers
Dr. Cummins, Have you ever seen a cummins ISX put diesel fuel
Dr. Cummins, Have you ever seen a cummins ISX put diesel fuel into the oil. I've checked all injector orings ans they seemed to be good.… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,824 satisfied customers
inframed an isx cummins started it and its missing turnoff
inframed an isx cummins started it and its missing turnoff the ignition and wants to stay running… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,824 satisfied customers
i have a 2006 cummins isx 500hp and 1850lb torque in a kenworth
i have a 2006 cummins isx 500hp and 1850lb torque in a kenworth heavy spec truck. it wont pull an empty set of super-b woodchip vans. i have done the delete of the egr last november. it has 2 codes fo… read more
Clayton
Clayton
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Vocational, Technical or Trade Scho
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Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

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