Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Ask an Expert,
Get an Answer ASAP!

This answer was rated:

Dr.Cummins, got a ISX with a black smoke/low power issue and…

Dr.Cummins, got a ISX with...
Dr.Cummins, got a ISX with a black smoke/low power issue and it kinda popping around sometimes. Pulled the exhaust off before the doc and still have a ton of black smoke coming out pipe. No codes... had a EGR code but we took it off and cleaned it.. ESN-79372036 how to diagnose?
Show More
Show Less
Ask Your Own Medium and Heavy Trucks Question
Answered in 4 minutes by:
12/13/2017
cumminsdr
cumminsdr, Mechanic
Category: Medium and Heavy Trucks
Satisfied Customers: 3,850
Experience: All types of Cummins applications
Verified

Any faults for turbo or VGT actuator inactive? Have you checked the turbo wheel for excessive play or pushing oil on either side? run it with air filter removed.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 7 months ago
No codes for turbo active or inactive havnt checked play

Ok check turbo wheel and for signs of oil,It's a starting point. also remove the air filter and run the engine to make sure that is not causing the restriction or issue.

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 7 months ago
all those things are good

Ok next without removing the turbo actuator yet and checking for travel on the sector gear. (cuz you have to drain and fill coolant then recalibrate actuator) can you run the engine and use insite to cut out each /multiple cylinders to try and isolate the smoke to a cylinder? I also take it the fuel filters have been serviced and there is no restrictions to the engine.... Not sure what you checked as basic stuff yet.

Ask Your Own Medium and Heavy Trucks Question

How did you make out? Find anything

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 7 months ago
New fuel filters... have a egr code that shows up randomly about not being able close all the way... found the tanks full of diesel but it was black or close to it.. drained and cleaned the fuel tanks out until all nice and shiny. Getting ready to diagnose the egr code but i blocked it off for long enough to start and run and it didn't change anything. Ran the overhead because it sounded like it was clattering or detonating or something along those lines but it changed nothing...??? any of this make any sense? or point you towards something.... haven't pulled the turbo actuator off yet either... and it only smokes black when you throttle up.. clatters all the time... even tried a good set of timing and metering actuators like you told me to try on another engine that was clattering and loping bad...

Have you used Insite to try to isolate a cylinder for smoke? It it popping thru the intake or exhaust? Are engine brakes adjusted correctly?

Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 7 months ago
pushes air out the intake it seems

Ugg.. That's not what I wanted to hear.. These engines are known for intake valves cracking and braking off.. Under operating conditions, acidic corrosion and thermal stresses induced in the intake valve can initiate fatigue cracking which, over time, can propagate until a portion of the intake valve separates from the valve head and enters the cylinder. This type of valve malfunction is commonly known as a chordal malfunction. Once the valve has malfunctioned, performance of the engine is compromised and progressive damage to the piston, cylinder liner, cylinder head and turbocharger can occur. Typical complaints following intake valve chordal malfunctions include but are not limited to check engine light, low engine power, cylinder misfire, “popping” noise from the air intake manifold, excessive engine noise, and engine shut down and no start conditions.

  • Chordal malfunction of the intake valve can only be reliably determined by borescope inspection or removal of the cylinder head.
  • A chordal malfunction of an intake valve is characterized by a piece or pieces of valve head missing from an intake valve.
cumminsdr
cumminsdr, Mechanic
Category: Medium and Heavy Trucks
Satisfied Customers: 3,850
Experience: All types of Cummins applications
Verified
cumminsdr and 87 other Medium and Heavy Trucks Specialists are ready to help you
Ask your own question now
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a technicianLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask cumminsdr Your Own Question
cumminsdr
cumminsdr
cumminsdr, Mechanic
Category: Medium and Heavy Trucks
Satisfied Customers: 3,850
3,850 Satisfied Customers
Experience: All types of Cummins applications

cumminsdr 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

2,775 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

4,493 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

2,869 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,235 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

3,850 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

961 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
Dr cummins I have a Cummins ISX 7932036. I need to know what
Dr cummins I have a Cummins ISX(###) ###-#### I need to know what liner protrusion should be. Also need to know how to perform a snap acceleration test for ISX ESN-79292515… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
3,850 satisfied customers
I'm working on a 2008 4300 maxxforce dt. This truck came to
Hello, my name is***** working on a 2008 4300 maxxforce dt. This truck came to me not running. The truck had been to another shop for a while with DPF issues, where the DPF and DOC had been replaced. … read more
Alex Olsen
Alex Olsen
auto/diesel/industrial
488 satisfied customers
Cummins ISL9 regening too often. I have been working on this
Cummins ISL9 regening too often. I have been working on this bus on and off for several months. It is trying to actively regen around every 2 hours. ISL9 CM2250 engine serial# ***** ECM code CB90010.4… read more
Alex Olsen
Alex Olsen
auto/diesel/industrial
488 satisfied customers
I have a Cummins ISX giving me fault code SPN 1209/ FMI 4
I have a Cummins ISX giving me fault code SPN 1209/ FMI 4 1XKAA48X27J217665 ESN: 79204489 Kenworth 2007 T-600Exhaust gas pressure shorted low.My question is, where exactly is the sensor located?… read more
FIX-IT
FIX-IT
Comercial transport technician
Vocational, Technical or Trade Scho
829 satisfied customers
I have a 2009 international prostar with a ISX 871 engine.
I have a 2009 international prostar with a ISX 871 engine. 836,000 miles. I have a recently cleaned my DPF and DOC and my After treatment system is requiring active regens between 1 and 2 times a day.… read more
Roy
Roy
shop foreman
Associate Degree
4,300 satisfied customers
I rebuild this cummins isx 450 a while ago i chanmged all 6
hello sir i rebuild this cummins isx 450 a while ago i chanmged all 6 injectors what could other issue for low power CAC - OK turbo - OK turbo actuator driver - ok… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
252 satisfied customers
DR.Cummins I have a Pete 04/12 Vin 1XP-WP4EX-6-DD192170 ISX
DR.Cummins Good Morning! I have a Pete 04/12 Vin 1XP-WP4EX-6-DD192170 ISX 15 ESN(###) ###-####It came in last week in shutdown mode from Regen issues. We forced a Regen and cleared all codes. It left … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
3,850 satisfied customers
My 2007 isx emits excessive black smoke and makes a muffled
my 2007 isx emits excessive black smoke and makes a muffled popping sound when in a hard pull. Runs good otherwise with no power loss. The check engine light will come on for a short time when its doi… read more
Roy
Roy
shop foreman
Associate Degree
4,300 satisfied customers
I have a 2008 Peterbilt 386 with a Cummins ISX eng#
I have a 2008 Peterbilt 386 with a Cummins ISX eng# ***** Truck is throwing heavy black smoke and no power. Just replaced the turbo and actuator. No egr codes, also removed the egr and cleaned it and … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,235 satisfied customers
Im working on a 2014 kenworth with 15L ISX WE SENT THE DPF
Im working on a 2014 kenworth with 15L ISX WE SENT THE DPF and the DOC TO BE CLEANED just because it has 7000 hours and we want to be proactive and reduce down time. I would like to know if I have to … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
3,850 satisfied customers
I have a 2013 Peterbilt with a 550 ISX. It has 3700 hrs on
I have a 2013 Peterbilt with a 550 ISX. It has 3700 hrs on it and the DPF filter was cleaned at 2700 hrs. A couple of weeks ago it threw a code 3251 (particulate trap 1 pressure). I had a mechanic for… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,235 satisfied customers
I have a 2004 Int with 435 cummins isx. It had a turbo go
I have a 2004 Int with 435 cummins isx. It had a turbo go out recently and i replaced it. After this point the truck continued to smoke after I flushed the air to air due to the turbo blowing out on t… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
252 satisfied customers
09 isx will not perform stationary regen, catalyst face temps
09 isx will not perform stationary regen, catalyst face temps will not go over 230 degrees. replaced VGT actuator and installed new turbo. do I need to look at replacing an actuator or just run the ov… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
3,850 satisfied customers
We have a customer with a 2010 M2 business class freightliner
We have a customer with a 2010 M2 business class freightliner with engine #73012266 ISC Cummins it keeps getting code 2637/2639/1921 of course when 2637 occurs it stop you from doing a roadside regen … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
3,850 satisfied customers
2006 International cummins isx 435st continously black smoke
2006 International cummins isx 435st continously black smoke when in gear and low power. Disconnected egr, read in a blog that it would work but didn't. Any ideas?… read more
Travis A. Wells
Travis A. Wells
Truck Mechanic
Associates of Applied Science
4 satisfied customers
Cummins ISX-500; ESN: 79233940; Stop Engine light, MIL, check
Cummins ISX-500; ESN: 79233940; Stop Engine light, MIL, check engine on. SPN 5298 FMI 18 - Status: Active DV but below normal operating range - (Moderately Severe Level) SPN 5018 FMI 11 - Status: Acti… read more
Travis A. Wells
Travis A. Wells
Truck Mechanic
Associates of Applied Science
4 satisfied customers
I HAVE 2011 FREIGHTLINER WITH A DD15It started making a noise
I HAVE 2011 FREIGHTLINER WITH A DD15 It started making a noise from the exhaust under a pull,kinda sounds something loose inside of the dpf.Now i have check engine light code sid 324 fmi 2 doc inlet p… read more
Clayton
Clayton
Technician
Vocational, Technical or Trade Scho
633 satisfied customers
will it hurt a Cummins ISX to run the motor with the connecting
will it hurt a Cummins ISX to run the motor with the connecting tube from the egr valve to the egr cooler removed?… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
3,850 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