Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I have a cm870 when pulling out loaded and on a hard pull it
I have a cm870 when pulling out loaded and on a hard pull it will lose power like turning the key off and back on and occasionally show code for low fuel psi and will sometimes even quit. May go days … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
I rebuilt the Engine, an after rebuilt, the turbo dosent
I rebuilt the Engine, an after rebuilt, the turbo dosent work right. with engine brakes, it put out 40psi. when pulling at 1400rpm its at 30psi. and at 1500rpm its at 28psi. and at 1600rpm its at 26ps… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
Very loud hissing sound and loss of power and black smoke .i
Very loud hissing sound and loss of power and black smoke .i have checked all the plumbing on the turbo can not find any leaks … read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 satisfied customers
2007 Peterbilt 335 Cummins 8.3 ISC. SN 46644819...originally
2007 Peterbilt 335 Cummins 8.3 ISC. SN 46644819...originally brought in bc of loss of power & heavy smoke...replaced injectors (all 6), replaced #2 piston & sleeve, machine shop checked heads but no m… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
Dr. Cummins I have an ISX with what looks like a cracked
Dr. Cummins I have an ISX with what looks like a cracked injector cup. Are these removable? If so what is the removal procedure ESN-79143527… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
I have a fault code of 1922 on my cummins. 2013 pete 387
changed the pressure switch on the burner and getting ready to pull the filter and have it cleaned … read more
Eddy
Eddy
HD Truck Tech
GED
2 satisfied customers
I have marine cummins engines and port is showing excessive
I have marine cummins engines and port is showing excessive blue exhaust smoke, year 2000 with 380 hours … read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 satisfied customers
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
1,700 satisfied customers
Dr.Cummins, got a ISX with a black smoke/low power issue and
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... h… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
Just installed new cylinder head on 2010 isx starts and
just installed new cylinder head on 2010 isx starts and idles fine drive under load or just crack throttle and it has excessive black smoke it was running perfect before repair ive doulble checked tim… read more
Daniel Wilson
Daniel Wilson
11,867 satisfied customers
I did a overhaul for cummins isx 2006 Esn- 79125882 Used
Hello sir I did a overhaul for cummins isx 2006 Esn- 79125882 Used back the old injectors and turbo Problem was excessive blowby After rebuild the truck is giving excessive black smoke on snap acceler… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
Dose anybody know the steps to calibrat the turbo actuator
Hello dose anybody know the steps to calibrat the turbo actuator be for installing it with the cummins insite software. For a cummins isx 2009 international prostar… read more
Jackie Dempsey
Jackie Dempsey
Heavy Line Technician
Automotive and Diesel Engines
126 satisfied customers
I have a 2004 W900L Kenworth with a ISX cummins, getting an
Hello, I have a 2004 W900L Kenworth with a ISX cummins, getting an intermittent code 731 engine speed code, I have changed sensors and check cam and crank wheel any other advice thanks… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
I have 2010 Kenworth T2000 with Cummins ISX. Recently the
Hi, I have 2010 Kenworth T2000 with Cummins ISX. Recently the engine brake started a malfunction. From time to time it just suddenly stops working. And it happens when I'm on the road. After a short s… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 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
2,740 satisfied customers
Just rebuilt a 07 isx with a pdi delete used timing wedges
Just rebuilt a 07 isx with a pdi delete used timing wedges and set the backlash. Engine starts and runs beautifully but am getting very little boost and smokes black under medium to hard acceleration… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
i have a 2007 kenworth t800h with a 565 isx high exhaust temp
i have a 2007 kenworth t800h with a 565 isx high exhaust temp 1100 degrees 30 to 40 psi boost when under load but 5 psi when jaking down hill lot of black smoke turbo seems to hesitate then just takes… read more
Daniel Wilson
Daniel Wilson
11,867 satisfied customers
2008 Peterbilt 340 with a Cummins ISC 330hp with SN#46796487
2008 Peterbilt 340 with a Cummins ISC 330hp with SN#46796487 (labeled as a Paccar PX8). Getting excessive black smoke anytime the accelerator is depressed. The slightest bump of the pedal will create … read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

11,867 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,234 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

4,023 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,740 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications

cumminsdr

cumminsdr

Mechanic

1,700 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

1,571 satisfied customers

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

Chris (aka-Moose)

Chris (aka-Moose)

Technician

353 satisfied customers

24 years of experience diagnosing & repairing

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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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