Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
Low oil pressure, just changed the oil about 500 miles
Low oil pressure, just changed the oil about 500 miles oil.... oil coming out of the dipstick … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
2001 Volvo N14 Blowing out the oil deepstick? I dont know
Hello JA: Hello. How can I help? Customer: 2001 Volvo N14 Blowing out the oil deepstick? JA: What is the complete model and serial number of your machine? Customer: I dont know sir but I have vin # if… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
I was reading up on possible symptoms on my c-7 it's blowing
I was reading up on possible symptoms on my c-7 it's blowing excessive amounts of oil out of the blow by tube under load at high rpm. … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
Is there enough pressure in thecrankcase of an older D333
Is there enough pressure in thecrankcase of an older D333 Cat to force oil out of an uncapped fill pipe or the dipstick tube if the stick is missing or loose?… read more
Curtis B.
Curtis B.
Technician
Associate Degree
38,825 satisfied customers
I currently own a 2004 277b skid steer and it seems to have
I currently own a 2004 277b skid steer and it seems to have excessive blow by but runs fine with 2200 hrs I've noticed that the crankcase breather was disconnected and the tube runs directly from the … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,303 satisfied customers
I have a 2006 peterbilt oil pressure goes from 42# to 80# to
i have a 2006 peterbilt oil pressure goes from 42# ***** 80# ***** 03 while running it is a C-13 acert cat engine do you think it is a sensor and where is it located … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I HAVE A 2012 FREIGHTLINER WITH A DETROIT 60 EPA07 DDEC VI
I HAVE A 2012 FREIGHTLINER WITH A DETROIT 60 EPA07 DDEC VI WITH A LOTS OF OIL PUSHING OUT OF THE OIL DIPSTICK & VALVE COVER GASKET LOOKS LIKE MAYBE CRANKCASE PRESSURE BUT THERES NOT ALOT OF SMOKE OR O… read more
Expert
Expert
7,469 satisfied customers
Having a nightmare situation with 2008 peterbilt 388
Having a nightmare situation with 2008 peterbilt 388 crankcase pressure warning light. Took truck to Cat they said it was the crankcase filter, replaced it. Code cleared and on my way i go, code comes… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
MXS69146 engine .. Just replaced turbo oil line from top
MXS69146 engine .. Just replaced turbo oil line from top turbo and it still leaks at bottom of hose and at the elbow , all washers are in place and everything nut is tight , any ideas ? … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
Just picked up a Fuso truck with a 6d16 engine, it was fine
Hi just picked up a Fuso truck with a 6d16 engine , it was fine around town and 30 min on open road at 2500 rpm 85/90 km h and lost about 4 ltr oil out breather hose that comes out top of engine cover… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
I have a Cummins ISC250 in a FL70 Freightliner and oil
I have a Cummins ISC250 in a FL70 Freightliner and oil started coming out of breather tube and lost oil pressure. Check oil and it wasn't on dipstick. Filled with oil and it hasn't done it since and h… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I drive a 2004 Freightliner Century S/T with 1,300,000 *****
I drive a 2004 Freightliner Century S/T with 1,300,000 ***** *****. Engine had an inframe except for Pistons and the turbo is new too. Truck is very slow when pulling a load uphill. Also the truck is … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
Chevrolet 7500: John, we have a c7500 Duramax that has excessive
John, we have a c7500 Duramax that has excessive blowby out the valve cover but not all the time. Is there something that could cause this intermitenly?… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have a 1993 Cummins L10 engine in a bus. We recently completed
I have a 1993 Cummins L10 engine in a bus. We recently completed an in-frame overhaul with new liners, pistons, rings and bearings. It runs great, but the blow by is pushing oil out of the fill tube. … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have a 1998 Peterbilt 378 ..VIN 462495.. The AC compressor
I have a 1998 Peterbilt 378 ..VIN 462495.. The AC compressor will not Cycle. It runs constantly. I can turn off the switch inside and it shuts off but as long as the switch is on the clutch is engaged… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
I have a 2005 Cat c15 in a 2005 Kenworth T800. I has been running
I have a 2005 Cat c15 in a 2005 Kenworth T800. I has been running perfect with great fuel mileage. I had a PM done a few weeks ago and we alo had to replace the water hose located behind the Fuel cool… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
what would cause oil to blow out from the head on a 28hp 1.4L
what would cause oil to blow out from the head on a 28hp 1.4L diesel tractor engine. oil also shoots out of the engine oil dipstick and overflows from the filler cap? I have noticed this particulary w… read more
Jim
Jim
Diesel tech.
212 satisfied customers
gmc c-6500: I have a GMC C-6500 c-7 cat diesel I have a lot
I have a GMC C-6500 c-7 cat diesel I have a lot of oil coming out the crank case breather tube but not when you first start the truck but when you drive it and when you come to a stop it almost runnin… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
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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

38,825 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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