Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
My company bought a 7 ton oshkosh to pull semi-tankers on
my company bought a 7 ton oshkosh to pull semi-tankers on slick/muddy roads. Every now and then when i use it there is oil being exhaled out of one or multiple breather tubes behind the cab. how do i … read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 satisfied customers
Volvo d13 brand new. Stage 3 Jake shudders whole truck
Volvo d13 brand new. Stage 3 Jake shudders whole truck between 1400-1525rpm. Truck drives like it's on rails. Smooth in every way. Stage 1&2 at those rooms do not make the shudder. Every other rpm ran… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
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I have a 3126 Cat 8yl95452 in a 2001 GMC 6500 with 195,000
Hi I have a 3126 Cat 8yl95452 in a 2001 GMC 6500 with 195,000 kms on engine. The engine has a intermittent tick noise that is progressively getting worse from first time noticed. It was only noticeabl… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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I have a JO8CT turbo engine from 06/99, bought in 2003,
I have a JO8CT turbo engine from 06/99, bought in 2003, complete over haul in 07 at 181,000 Km then cylinder replaced at $236,000 then leaking rocker cover gasket at 248,000 KM and again now at 275,00… read more
Jeremy
Jeremy
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I have a isc cummins engine # 46832445 i am looking for the
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cumminsdr
cumminsdr
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High School or GED
1,700 satisfied customers
I have a 2003 volvo with a D12 engine I have a problem with
HI , I have a 2003 volvo with a D12 engine I have a problem with oil coming out of the front crankcase breather tube , the truck has two breather tubes one in the front and one on the valve cover the … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
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I have a 2010 Mack with a MP8. There is not enough clearance
I have a 2010 Mack with a MP8. There is not enough clearance to adjust the valves … read more
Doug Barnowski
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I am looking at buying an 8x4 Mitsubishi Fuso which is set
Hi, I am looking at buying an 8x4 Mitsubishi Fuso which is set up as a horse truck. I have no mechanical sense what so ever and am after some advise as to this type of trucks engine history/capability… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
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I hav a problem with a 2008 workhose cust 4.5 turbo diesel.
Hi there. I hav a problem with a 2008 workhose cust 4.5 turbo diesel. Truck. The engine runs fine. But there's is a weird noise coming from the passenger valve cover.… read more
Curtis B.
Curtis B.
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Have a 2004 international 4200 vt365 I will be driving truck
Have a 2004 international 4200 vt365 I will be driving truck down road the truck puts out a big puff of Black smoke and loses power when smoke quits truck runs fine this does this a lot… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
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Wayne, I have a problem with a komatsu s6d95 engine, after
Hi Wayne, I have a problem with a komatsu s6d95 engine, after a rebuild (rings, one piston, bearings, oil and water pump) after assembly engine fire right up and run for 2 hrpm and set for 1 month. af… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
My 2005 cat c7 engine drips oil from the blow by hose when I rev it to 2500 rpm few
My 2005 cat c7 engine drips oil from the blow by hose when I rev it to 2500 rpm for a few minutes while it's parked. I took it to a shop and I was told it needs an overhaul. I have 3 of the same truck… read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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cummins engine 4bt engine at 1000 hrs. starts fine, revs fine,
cummins engine 4bt engine at 1000 hrs. starts fine, revs fine, plenty of power. question. breather tube on the lifter/ push rod cover runs oil out at high rpms. like 2200 but only happens when you hav… read more
cumminsdr
cumminsdr
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High School or GED
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my cummins n14 on long hard pull oil temp goes to 240 degrees
my cummins n14 on long hard pull oil temp goes to 240 degrees and oil pressure drops to 20 pounds at 1500 rpm what is wrong… read more
Wayne
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Hello, we have an inline Detroit Diesel series 671 engine.
Hello, we have an inline Detroit Diesel series 671 engine. We did an inframe overhaul. Reman blower installed also.Problem: at operating temp and full throttle oil is coming out the breather box bolte… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 satisfied customers
I have a truck with a 3406e engine in it. It has some blowby
I have a truck with a 3406e engine in it. It has some blowby and uses about a gallon of oil every two to three thousand miles, we run local on dirt roads and the work it does is hard pulling so I dont… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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I have a Signature 565 (99) - 2.9 million kilometers on it
I have a Signature 565 (99) - 2.9 million kilometers on it - took it into Cummins to replace injectors (preventative maintenance) - truck will not run properly ever since. Have lost 2 mpg - burning oi… read more
sevn103
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232 satisfied customers
Isuzu NPR: Isuzu NPR Heavy Duty 2001 diesel truck 190,000 miles My
Isuzu NPR Heavy Duty 2001 diesel truck 190,000 miles My engine started putting black oil in the raidator water. Now it has started a light gray smoke coming out the breather hose at the bottom of the … read more
cumminsdr
cumminsdr
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Meet the Experts:

Daniel Wilson

Daniel Wilson

4,737 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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