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
2005 Cat C7 Getting fuel in oil. Resealed and tested
2005 Cat C7 Getting fuel in oil. Resealed and tested injectors. Put dye in fuel filter ran a while check top end took of valve cover found no dye. Pulled fuel pump and hpop pump and look for leak. I't… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,046 satisfied customers
Sequence for replacement of cylinder head gasket c15 cat
Sequence for replacement of cylinder head gasket c15 cat nxso5571. Torq spec.s over head adjustment. Jake adjustment. Reason for replacement anti freeze in oil no pressure in cooling system with bottl… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,046 satisfied customers
C15 Cat in a 4900 Western Star losing 2to3 gallons coolant
C15 Cat in a 4900 Western Star losing 2to3 gallons coolant per day. No visible leaks, exhaust not white,not skipping,not blowing out overflow. Help me.… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
3,632 satisfied customers
2001 6nz using about 1.5 gal coolant a week.had truck to cat
2001 6nz using about 1.5 gal coolant a week.had truck to cat pressure tested over nite no pressure loss.no signs of coolant in oil from lab test..when i remove rad cap after 48 hrs of sitting still ha… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,046 satisfied customers
How did I get water in oil on a cat 6nz. I have to go look
how did I get water in oil on a cat 6nz JA: What is the complete model and serial number of your machine? Customer: i have to go look it up give me a min JA: Are you fixing this yourself? What have yo… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,046 satisfied customers
I have a two part question on my Cat C13 SN: KCB81769. 1. I
I have a two part question on my Cat C13 SN: KCB81769.1. I recently started getting oil into the coolant reservoir so we replaced the oil cooler and water pump. The system was flushed a few times and … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,046 satisfied customers
I have a 2011 peterbilt with c15 cat it's losing coolant
I have a 2011 peterbilt with c15 cat it's losing coolant about 1 gallon per 100 miles it has no leaks it's not getting in the oil and not smoking … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,046 satisfied customers
Could the turbo leak oil and push it out of the stack, I
Could the turbo leak oil and push it out of the stack, I have all this brownish stuff that came out of the middle of the stack by a clamp. … read more
Curtis B.
Curtis B.
Retired service manager
Associate Degree
3,496 satisfied customers
I have a 6NZ cat c15 engine, while driving I lost power and
I have a 6NZ cat c15 engine, while driving I lost power and started smoking and have oil coming out of the turbo on exhaust side, do you think it's the turbo… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,046 satisfied customers
Cat man, 2002 international with C15 have to add some
Cat man, 2002 international with C15 have to add some coolant every so often , can not find external leaks. Engine oil is fine. Where else to check. Also, water drips off the blow by hose and it has m… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,046 satisfied customers
Cat Man, I have a 2002 KW with a Cat... I can't find the ESN
Cat Man, I have a 2002 KW with a Cat... I can't find the ESN on it but I assume its a 6nz. When we start the truck after about 2 seconds with the radiator cap off coolant shoots up and out of the tank… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,046 satisfied customers
I have a 2009 peterbilt,it is wanting to build pressure in
I have a 2009 peterbilt,it is wanting to build pressure in the overflow tank.I changed the radiator cap,the hose between the radiator and reservoir is not plugged,I bypassed the precooler between the … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,046 satisfied customers
I have a 6nz c15 cat in a 2002 western star. I loose prime
I have a 6nz c15 cat in a 2002 western star. I loose prime when my tanks are not full. I have changed the steel line from the transfer pump to the filter housing. Changed the filter housing, all fuel … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,046 satisfied customers
I noticed on my 3406E cat out of the breather thick oil with
I noticed on my 3406E cat out of the breather thick oil with whitish stuff coming out.the coolant in the reservoir is also thick and the reservoir cap has a white substance forming on it.Has oil mixed… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,046 satisfied customers
catman I have an 08 cat c15 eng sn sdp04125. It is building
catman I have an 08 cat c15 eng sn sdp04125. It is building pressure in the coolant. We thought it had a leak but I just looked at it and it appears to be flowing from the cap. the engine was cool lik… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,046 satisfied customers
Hi Ive got a cat c15 6nz 28000 hrs , been great , just started
Hi I've got a cat c15 6nz 28000 hrs , been great , just started to be slower to start and a bit of pressure through to rad causing the rad to over flow , the coolant is agitated with air or combustion… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
3,632 satisfied customers
Hello sir i have 2008 c15 475 problem is showing moister
Hello sir i have 2008 c15 475 problem is showing moister on oil dipstick and showing cream on dipstic end no any coolent showing in oil sample pls help me… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,046 satisfied customers
Hi i got 03 peterbilt with cat c15 6nz serial number had oil
Hi i got 03 peterbilt with cat c15 6nz serial number had oil in coolant changed water pump and thermostat by than we saw oil cooler is dirty so i changed that to after 2 weeks i see again little oil i… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
10,046 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

10,046 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