Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Connect one-on-one with {0} who will answer your question

Related Medium and Heavy Trucks Questions
I have a 3406 E model cat, running down road it push's a
I have a 3406 E model cat , running down road it push's a little oil out of dip stick , I put my over blow by while parked and it starts … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
41 satisfied customers
I have a 2007M2 Business class freight liner, it has a MBE
I have a 2007M2 Business class freight liner, it has a MBE 900–250. I replaced the compressor and the filter dryer. Started the truck And it felt pressure but would not purge, like a dummy I revved it… read more
Joe Green
Joe Green
65 satisfied customers
Freight liner dump truck will not build air at an idle have
Freight liner dump truck will not build air at an idle have to rev up high to build air pressure I have bypassed the air dryer still same … read more
Nich1019
Nich1019
Diesel Technician
Vocational, Technical or Trade School
41 satisfied customers
My 1988 flc freight liner tractor suddenly won't build air
My 1988 flc freight liner tractor suddenly won't build air in brake system … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
How do you use air line antifreeze? And I saw that someone
Hello. How do you use air line antifreeze? And I saw that someone said that you only need that on older trucks without a dryer. Is that true? Thanks.… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
561 satisfied customers
I have an 1999 Peterbilt 379 with a Detroit Series 60 11 1L
Hello, I have an 1999 Peterbilt 379 with a Detroit Series 60 11 1L engine. This morning the air dryer started to purge constantly every 30 seconds. Once the pressure is built up the air dryer purges a… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
561 satisfied customers
I have a 93 Freightliner with a N14 Cummins motor and it
I have a 93 Freightliner with a N14 Cummins motor and it builds up too much air pressure. Governor opens to purge air dryer but doesn't seem to stop building pressure. Gets up to 200 or 230 PSI … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
561 satisfied customers
Having a hard time building air. ISX 15 Cummins 2013
I am. I've put a new air dryer on, a new air compressor on changed the dryer filter, changed the dryer governor. I used shop air to check flow in all of the air lines to both tanks and pushed shop air through the signal air line … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
561 satisfied customers
Truck Vin H72526 cummins ism air compressor part number..
Truck Vin H72526 cummins ism air compressor part number.. problem started a couple days ago..truck would build way too much pressure 140+ psi. I changed the governor out and it built and stayed perfec… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
561 satisfied customers
My air compressor is pushing oil through to my air dryer.
My air compressor is pushing oil through to my air dryer. Any thoughts on how to stop it? … read more
Eurotruck72
Eurotruck72
Garage owner
122 satisfied customers
2011 mach cxu613 does not build air pressure only 50 psi.
2011 mach cxu613 does not build air pressure only 50 psi . New governor same issue don't hear leaks from compressor discharge line or any major leaks… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
Cummins 400 ISl Oil Spray Just picked motorhome up from
Cummins 400 ISl Oil Spray Just picked motorhome up from repair shop after: air dryer filter replaced, turbocharger replaced, new oil, oil filter, air filter and front cover resealed. Drove 25 miles an… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,886 satisfied customers
I have a dump truck that every time the air break relay
I have a dump truck that every time the air break relay valve relieve the pressure coming out with oil, what I have to do to fix it? thank you… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
2000 ISM400 turbo #35000163. Suddenly developed enough crankcase
2000 ISM400 turbo #35000163. Suddenly developed enough crankcase pressure to blow dip stick out. Slobber tube is clear and has a lot of air pressure coming out but no smoke or oil. I unhooked turbo ai… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,886 satisfied customers
I have a 2003 Cummins ISM 500 in my RV. It recently started
I have a 2003 Cummins ISM 500 in my RV. It recently started making a popping noise at idle out of exhaust with white smoke. Was advised it was probably an injector and ran some amsoil fuel conditioner… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,886 satisfied customers
I am working on a 1991 Pete with a L10. I just updated the
I am working on a 1991 Pete with a L10. I just updated the dryer with a AD-9 dryer. The dryer i took off i could not identify. It looked close and had 3 lines hooked up to it like the AD-9. The proble… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,756 satisfied customers
Can anyone tell me how to build a blow by tool for a cummins
Can anyone tell me how to build a blow by tool for a cummins 8.3 here are some info I have found http://powerstrokenation.com/forums/showthread.php?t=72557 I have done what I can without this tool. I … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,886 satisfied customers
freightliner fl60: hi i have a 2000 freightliner with a 5.9
hi i have a 2000 freightliner with a 5.9 cummins with 295k miles the truck runs like a champ and doesnt loose any power. i had a bad oil leak and replaced the oil pan gasket, the front cranks seal wit… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,886 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.

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

6,062 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,353 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

17,386 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,756 satisfied customers

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

Curtis B.

Curtis B.

Technician

1,947 satisfied customers

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

cumminsdr

cumminsdr

Mechanic

1,886 satisfied customers

All types of Cummins applications

Chris (aka-Moose)

Chris (aka-Moose)

Technician

641 satisfied customers

24 years of experience diagnosing & repairing

< Previous | Next >

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