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
May cat 31 16 do not get any fuel when started. Cevrolet
may cat 31 16 do not get any fuel when started JA: What is the complete model and serial number of your machine? Customer: Cevrolet Kodiak 5800 JA: Are you fixing this yourself? What have you tried so… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 satisfied customers
Jeremy, I do have another question for our 1999 Freightliner
Hi Jeremy,I do have another question for our 1999 Freightliner FL 70 truck, Cat 3126 engine, Serial 8YL51701It will always crank over and take a while to start in the morning, or when it sat for a few… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,672 satisfied customers
3126 cat will only start on ether. 8yl54721 in a 2000
heui pump replaced, cam sensors replaced, checked cam sensor gap, installed 2 different test ecm's, checked for injector oil leaks, have 1300 psi oil at block, good fuel pressure, good power and grounds at ecm, checked ecm harness and load tested wires, after starting with ether it runs smooth all day. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 satisfied customers
2000 GMC Topkick with 3126 Cat will not start without ether.
2000 GMC Topkick with 3126 Cat will not start without ether. Seems ok once its running but if you slow down to stop it will die and will not restart without ether. Replace the fuel pressure regulator … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 satisfied customers
I'm working on a lift truck. 1990s cat 3208 all mechanical
Hey. I'm working on a lift truck. 1990s cat 3208 all mechanical no turbo. Fuel system was plugged and fuel of water/trash. Cleaned rebuilt and replaced pumps and injectors. Runs but will not start wit… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
418 satisfied customers
1981 international s series just died, primary fuel filter
1981 international s series just died, primary fuel filter is full secondary is empty. Fuel pump? or clogged pre filter? or clogged primary fuel filter? … read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
418 satisfied customers
Cat 3126b losing prime. : I've used cat man before. my last
I've used cat man before. my last problem was diagnosed as a shorted IAP sensor and haven't had any problems for 18 mos. then it just crapped out in basically the same way it did before an I'm unable to start. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 satisfied customers
1990 ford 700 dump truck just stops running like out of gas
1990 ford 700 dump truck just stops running like out of gas waits and then starts back up and may run for a day and starts again replaced fuel pump. ignition module, battery, rotor button… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,400 satisfied customers
2000 c15 cat it will turn over but will not start getting
2000 c15 cat it will turn over but will not start getting fuel no leaks ran just fine before i changed my oil acts like electrical tried to pull start it no luck and no speedo or tack when the flasher… read more
diesel-tech
diesel-tech
Owner of landrys truck repair llc
136 satisfied customers
3126 Cat the truck lost brakes at the off ramp had to use
3126 Cat the truck lost brakes at the off ramp had to use tran to stop the vehicle came to a stop and stalled and now wont start took High perssure fuel pump off to see if the pump is bad but it check… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 satisfied customers
Catman, I asked you a question a few weeks ago regarding
Hey there catman, I asked you a question a few weeks ago regarding a “crank but no start” problem on a cat C15. It seems to be happening again. The truck in question is a 2007 peterbilt 379 (674827) c… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 satisfied customers
Cat Man, you've helped us out a few times over the past
Hello Cat Man, you've helped us out a few times over the past few years and it's been a great help. Right now I have 1997 Pete with a CAT engine, and it's acting like we got some bad diesel. This morn… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 satisfied customers
I have a 1987 topkick cat motor it was running couple
I have a 1987 topkick cat motor it was running for a couple hours when i turned it off went to start it back up a few minutes later it willnt start, rolls over no start?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 satisfied customers
I have a 2000 Chevy C6500 with a Cat 3126. It will fire right
I have a 2000 Chevy C6500 with a Cat 3126. It will fire right up after I shut it off naturally, even after sitting overnight. However, when I drive it around after a few minutes it just shuts off afte… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 satisfied customers
I have a 1993 cat(NNN) NNN-NNNN engine about a month ago the fuel
I have a 1993 cat(NNN) NNN-NNNN engine about a month ago the fuel system was flooded with water and froze off I drained the whole fuel system and tank changed out all the filters and put new fuel in. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 satisfied customers
I have a 1999 Chevy 2ton dump truck with a 3126 cat diesel
I have a 1999 Chevy 2ton dump truck with a 3126 cat diesel engine that wont start. I can get it started if i spray ether into the air filter it will start and run until the ether burns up. I had it to… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 satisfied customers
7.2 cat in an 01 motorhome, drained the seperator (not much
7.2 cat in an 01 motorhome, drained the seperator (not much came out), now it doesnt want to start. any ideas/… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 satisfied customers
Freightliner cab over: 73 freightliner cab over 300 cat motor
73 freightliner cab over 300 cat motor - cannot get it to start. can't seem to get fuel to engine, put in new feul filter but still won't start. turns over fine. Is there another fuel pump besides the… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 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

3,632 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

4,965 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

3,400 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,672 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

1,458 satisfied customers

All types of Cummins applications

Chris (aka-Moose)

Chris (aka-Moose)

Technician

149 satisfied customers

16 years of experience

dieseldan55

dieseldan55

Contractor

77 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