Medium and Heavy Trucks

Have truck repair questions? Ask an Expert

Ask an Expert,
Get an Answer ASAP!

Related Medium and Heavy Trucks Questions
I have a 4 cylinder diesel tractor that is blowing a lot of
I have a 4 cylinder diesel tractor that is blowing a lot of white smoke and lacking power. It was recently rebuilt with pistons, rings, sleeves , rods, gaskets, but not valves. I think white smoke mea… read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
Working on an autocar with a cummins diesel.davco filter
working on an autocar with a cummins diesel.davco filter separator stalls every 20 to 30 seconds … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,243 satisfied customers
I have a UD truck with an engine model FE6TA, 423CU, that
I have a UD truck with an engine model FE6TA, 423CU, that recently started blowing white smoke. very rich and thick white smoke. There is some power loss in the engines performance, but the it runs ve… read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
I have a 2003 international with a dt466 I had no start when
I have a 2003 international with a dt466 I had no start when cold so I replaced the high pressure oil pump. Starts great but now I have diesel fuel on the dipstick & my oil psi is low… read more
Alex Olsen
Alex Olsen
auto/diesel/industrial
490 satisfied customers
I HAVE A PERKINS DIESEL MODEL NUMBER 1004-40T SERIAL NUMBER
HELLO, I HAVE A PERKINS DIESEL MODEL NUMBER 1004-40T SERIAL NUMBER AK70453. THE ENGINE WILL START AND RUN CORRECTLY FOR A SHORT AMOUNT OF TIME. THEN THE ENGINE WILL SHUT ITSELF DOWN WITH A PUFF OF WHI… read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
I have a Isuzu NKR 4HG1 engine that I overhauled. Since the
I have a Isuzu NKR 4HG1 engine that I overhauled. Since the overhaul, the motor blows white smoke and it has absolutely no power. I'm a qualified mechanic by trade. Do you have experience with these e… read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
Do you know a lot about a Kubota l4350? L4350... don't know
I am now . . . mechanic gave up! Tractor starts up, but particularly up an incline, even a shallow one, it misses, runs rough, loses RPM, then wavers RPM up and down, but without much power, and eventually stalls out. Replaced fuel pump and lines forward of glass filter. But same symptoms . . . Now, after starting up with filter glass full of fuel, the glass drains in about 20 seconds . .. more fuel drawn off than resupplied . . . and then stalls. Re-bleed line, fill glass . . . does it again. What next? … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,892 satisfied customers
Ive got a 2005 ih 4300 with dt466 run issues. International
yes ipc sensor, ipr sol, timing sensor, all new fuel injectors, hi psi oil pump clean out fuel lines, new fuel filter. seems like when its in a warm shop it will start, but when it sits outside over night in the cold it has problems starting and keep running.. … read more
Alex Olsen
Alex Olsen
auto/diesel/industrial
490 satisfied customers
2010 gehl4640e turbo .Deutz td2009l04. Blowing smoke. change
2010 gehl4640e turbo .Deutz td2009l04. Blowing white smoke . change fuel and filter. Dealer gave up 600 hrs.on machine. compression with in specs .Pop tested injectors all with in specs ,spray well. T… read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
2003 Mitsubishi fuso black smoke from exhaust pipe smells
2003 Mitsubishi fuso black smoke from exhaust pipe smells like heavy diesel engine sounds like its missing on a cylinder runs rough smooths out after driving for a little while wat can be causing this… read more
spankyjr1
spankyjr1
Journeyman
Vocational, Technical or Trade Scho
2,716 satisfied customers
cat 257b had fuel tank wire brushed cleaned out and some other
cat 257b had fuel tank wire brushed cleaned out and some other things redone a few months ago when vehicle started losing power. smoking sputtering especially when under a load. go it back ran fine fo… read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,283 satisfied customers
I HAVE A 2001 DURAMAX, IS IT POSSIBLE TO CLEAN THE FUEL INJECTORS,
I HAVE A 2001 DURAMAX, IS IT POSSIBLE TO CLEAN THE FUEL INJECTORS, WITHOUT REMOVING THEM FROM THE ENGINE, WITH SOME SORT OF FLUID APPARATUS, HOOKED UP TO THE FUEL SYSTEM?… read more
GM Tech (Cam)
GM Tech (Cam)
Owner/Technician
Vocational, Technical or Trade Scho
26,870 satisfied customers
Have a 2004 KW with a cummins ISX. I was driving the truck
Have a 2004 KW with a cummins ISX. I was driving the truck for about 1.5 hrs and the truck just died on me. It was displaying the low oil light and check engine light. Check the oil, it's at the corre… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
BenjyI have a nissan 2.6l non turbo diesel that has done
hi Benjy I have a nissan 2.6l non turbo diesel that has done 305000 kms. It has started missing when the revs are above about 2000 rpm and blowing copious clouds of blue smoke. There doesn't appear to… read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
2007 c7 330 hp runs fine however after sitting for 48 hours
2007 c7 330 hp runs fine, however, after sitting for 48 hours and i do a cold start it misses and blows white smoke for 10-15 secs. No codes, replaced fuel filters, installed FASS fuel system , replac… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 satisfied customers
gmc top kick: I have a top kick dump 1990,starts fine, after
I have a top kick dump 1990,starts fine, after running for 5 min. starts spitting and loosing power and blowing white smoke. the smoke is a fuel. put new filters on. what can I look for… read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
hello I own a 1990 bobcat it has low power, first I checked
hello I own a 1990 bobcat it has low power, first I checked the fuel injectors two were apparently bad changed them and the problem persists which is low power, any ideas? thank you martin viramontes,… read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
2003 Freightliner century with egr series 60 Detroit,engine
2003 Freightliner century with egr series 60 Detroit,engine starts right up and misses really bad,NO CHECK ENGINE LIGHT,truck pours out smoke,smoke smells like diesel,exhaust pipe is wet around the to… read more
spankyjr1
spankyjr1
Journeyman
Vocational, Technical or Trade Scho
2,716 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

2,803 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

4,530 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

2,892 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,243 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

1,351 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

991 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 >

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