Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Ask an Expert,
Get an Answer ASAP!

M11 cummins misssing, it idles fairly well but when I speed…

Customer Question
M11 cummins misssing Mechanic's...

M11 cummins misssing

Mechanic's Assistant: Thanks. Can you give me any more details about your issue?

It idles fairly well but when I speed it up it has a definite miss

Submitted: 2 years ago.Category: Medium and Heavy Trucks
Show More
Show Less
Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 2 years ago
How do I get my answer?
Answered in 19 minutes by:
2/24/2016
Technician: Jackie Dempsey,
 replied 2 years ago
Jackie Dempsey
Category: Medium and Heavy Trucks
Satisfied Customers: 40
Experience: Diesel Technician at Cummins Pacific
Verified

Goodmorning! i am more than happy to assist you with your question today. Can you please tell me if this engine is an M11 Celect or Celect plus? Also, is there a check engine light present?

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 2 years ago
1995 M11 330E model engine
Customer reply replied 2 years ago
I dont see anything on celect or celect plus
Technician: Jackie Dempsey,
 replied 2 years ago

Thank you for that information, are there any check engine lights present on the dash?

Ask Your Own Medium and Heavy Trucks Question
Technician: Jackie Dempsey,
 replied 2 years ago

The symptoms described sounds to me like a fuel system problem, however please keep in mind it is difficult to diagnose via the internet, but I will do my best! I would like to inquire as to what (if any) trouble shooting steps you have taken at this point? I would recommend checking to ensure there is no air in the fuel system, no visible fuel system leaks, verify that the oil level is within spec as well. I have seen a few different issues result as the cause of a miss on this particular engine. However in my experience it does usually turn out to be an injector issue

Ask Your Own Medium and Heavy Trucks Question
Technician: Jackie Dempsey,
 replied 2 years ago

If by chance you have verified that the fuel system is working properly, the next most common problem I have seen is the cam sensor on these units. Not the most fun to change I will admit, however very possible. Due to the older style engine it may not be the easiest to diagnose without Cummins specific diagnostic equipment. If appropriate I would also advise to bring it into a Cummins facility so they may connect Insight and verify the operations of the engine internally with the computer. You can find your local Cummins distribution center by logging into www.cummins.com or by calling 1 800 Diesels and a rep should be able to assist you. I hope that I have been able to shed some light on your issue at hand. If you have any further questions my name is ***** ***** I will gladly assist you. Please do not forget to rate my service today. Take care

Ask Your Own Medium and Heavy Trucks Question
Technician: Jackie Dempsey,
 replied 2 years ago

I would like to also mention the best way to check for air in the system on these units is to hookup a sight glass to the inlet line of the fuel system and verify there are no bubbles, if bubbles are present you have air in the lines. Once again I hope I have been of assistance, please let me know if I can help further ;)

Ask Your Own Medium and Heavy Trucks Question
Technician: Jackie Dempsey,
 replied 2 years ago

Hello there! I just wanted to check back in to see if you had any further questions? If so please let me know. Thank you

Ask Your Own Medium and Heavy Trucks Question
Was this answer helpful?
Ask Jackie Dempsey Your Own Question
Jackie Dempsey
Jackie Dempsey
Jackie Dempsey
Category: Medium and Heavy Trucks
Satisfied Customers: 40
40 Satisfied Customers
Experience: Diesel Technician at Cummins Pacific

Jackie Dempsey is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

He answered my question promptly and gave me accurate, detailed information. If all of your experts are half as good, you have a great thing going here.

DianeDallas, TX

< Previous | Next >

Meet the Experts:

Daniel Wilson

Daniel Wilson

2,322 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

4,247 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

2,640 satisfied customers

worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

Jeremy

Certified Truck/Bus Technician

2,019 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician

cumminsdr

cumminsdr

Mechanic

1,225 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

813 satisfied customers

Technician turned service manager on multiple lines of trucks and engines, used in industry.

dieseldan55

dieseldan55

Contractor

74 satisfied customers

Road Service mechanic for Volvo Construction.

< Previous | Next >

Related Medium and Heavy Trucks Questions
Ac clutch is not engauging. 2011 prostrat. I pulled the
I pulled the system down and changed the line I'm tring to recharge it but the ac compressor won't kick on … read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
I'm doing an inframe on a ism Cummins, my shop manual is
I'm doing an inframe on a ism Cummins, my shop manual is misplaced, can I get the procedures and specs for assembly and disassembly for this engine please, here is the data tag..… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,322 satisfied customers
The jake on my 8V92 detroit engine quit working. 1973
1973 Kenworth 8V92 Detroit engine forgot model of truck I think A model … read more
timdieseltech
timdieseltech
diesel tech
Vocational, Technical or Trade School
61 satisfied customers
I have a freightliner M2with a 4/2005 manufacture date.
Hello. I have a freightliner M2(###) ###-####with a 4/2005 manufacture date.Driver side tail / brake / turn (3) wire socket went bad. Bought a new light assembly which came loaded with new bulbs. One … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,322 satisfied customers
I have a 2006 international 8600 I was wondering if there is
I have a 2006 international 8600 I was wondering if there is any way to check the resistance on the thermistors in the ac system or do they have to be replaced trail an error … read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
Have a 2016 KW with isx15 with fault code spn3251 fmi2. Want
Have a 2016 KW with isx15 with fault code spn3251 fmi2. Want to know how to clear codes without a scan tool … read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
Looking for engine wiring diagram for 09 international 4400.
Looking for engine wiring diagram for 09 international 4400 … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,322 satisfied customers
Low boost pressure. 2007 Kenworth W900L C15 ACCERT CAT. Our
Our mechanics are going through all charged air lines exhaust system common issues finding nothing yet there is low boost … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,247 satisfied customers
2004 international 4300, antifreeze vanishing throughout the
2004 international 4300, antifreeze vanishing throughout the day. Can put a couple gallons in the morning in, at the end of 10 hours, all gone. No antifreeze in the oil from what I can tell. Just had … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,640 satisfied customers
I have an ISX with serial number 79649606. Can somebody help
I have an ISX with serial number 79649606. Can somebody help me with camshaft removal instructions?… read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
2012 HINO DTC CODES P141F P141B P141D. 268A 2012 HINO. RAN
RAN ALL LAPTOP TEST CHECK FOR EXHAUST LEAKS NO EXHAUST FOUND FORCED REGEN … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,322 satisfied customers
Working on a 98 chevy motorhome with a cat 3126 it wont
working on a 98 chevy motorhome with a cat 3126 it wont start how can I retrieve the codes none of my computers will commicate with it… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,247 satisfied customers
My 2004 ram dsl will not start but turns over just fine.
My 2004 ram dsl will not start but turns over just fine. Also the in-dash fuel gauge is not working. I have two tanks and the on-dash duel-gauge says there is 20gals in my lower tank. It registered al… read more
Curtis B.
Curtis B.
Technician
Associate Degree
813 satisfied customers
I have a 2007 freightliner xcs chassis motorhome; last 4 VIN
I have a 2007 freightliner xcs chassis motorhome; last 4 VIN 2492. I have owned since new. As long as I can remember, at lower speeds I heard an air pressure relief sound at about 2 second intervals b… read more
timdieseltech
timdieseltech
diesel tech
Vocational, Technical or Trade School
61 satisfied customers
Hy. 2003 freighliner Columbia. Ac compressor keep running
hy JA: What is the complete model and serial number of your machine? Customer: 2003 freighliner Columbia JA: Are you fixing this yourself? What have you tried so far? Customer: yes JA: Anything else y… read more
Andy3221
Andy3221
truck /coach technician
Vocational, Technical or Trade Scho
222 satisfied customers
03 Freightliner Century Classic What's the avg. labor time
03 Freightliner Century Classic What's the avg. labor time on king pins and bushings replacement? No ream… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,322 satisfied customers
I am a new owner of a Bobcat Melroe 610 skidsteer. Bought it
I am a new owner of a Bobcat Melroe 610 skidsteer. Bought it mainly to do landscaping around my new house. I started off good, but a couple of days later, it kept quitting on me, then found out it mus… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,640 satisfied customers
I have a CAT 3508B that came up with this code; Secondary
I have a CAT 3508B that came up with this code; Secondary Speed Signal timing abnormal proceed with caution … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,287 satisfied customers
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.

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.

Show MoreShow Less

Ask Your Question

x