Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
Under a load from 1200rpm to 1500rpm my 12.7L spits and
Under a load from 1200rpm to 1500rpm my 12.7L spits and sputters. I just replaced the EGR Valve and Cooler. But it still spits and sputters … read more
Mike Mcmillan
Mike Mcmillan
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O4 freightliner Columbia series 60 Detroit. Engine whistles
O4 freightliner Columbia series 60 Detroit. Engine whistles while idling … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
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I have a Freightliner semi with a Caterpillar C15 engine and
I have a Freightliner semi with a Caterpillar C15 engine and some technical answers please. … read more
Cat Man
Cat Man
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Vocational, Technical or Trade Scho
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I have a 2006 Freightliner Columbia, ddec 5 ,14 ltr. Problem
I have a 2006 Freightliner Columbia, ddec 5 ,14 ltr. Problem seems random but more pronounce when pulling hills no matter how slight. So, what it does is at idle for no reason the actuator will up and… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a c13 ran perfect on the way from Miss. to Ga and 5
I have a c13 ran perfect on the way from Miss. to Ga and 5 miles from home stopped at the store. Pulled back on the road and truck would barely run and was smoking black out the exhaust like a tire on… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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I have 2006 Freightliner Columbia just recently rebuilt
I have 2006 Freightliner Columbia just recently rebuilt engine and also put new harness for ECM. … read more
Anthony Young
Anthony Young
Associates in Diesel Technology
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2000 Kenworth with Cummins n14. very low boost. when CAC
2000 Kenworth with Cummins n14. very low boost. when CAC system is tested with intake makifold hose still hooked. i lose all my air from around the head gasket on the brakes compressor. how is that po… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
398 satisfied customers
Im working on a Detroit diesel series 60. Truck randomly
Im working on a Detroit diesel series 60. Truck randomly looses power and smokes awful. Codes I got were SID 146 FMI 2 and SID 147 FMI 2. I have very little experience with the Series 60. Just wonderi… read more
Expert
Expert
7,458 satisfied customers
2006 freightliner Detroit engine 14L won't start up only
Hi 2006 freightliner Detroit engine 14L won't start up only code on the dash is NO ENG replaced batteries and synchronizer and timer sensor and still nothing … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a 2006 freightliner Columbia with a mbe 4000 engine.
Hello. I have a 2006 freightliner Columbia with a mbe 4000 engine. @ days ago I opened the hood and saw "oil" sprayed and dripping on the drivers side of the motor. It was coming from the egr pipe as … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
my 2006 freightliner columbia air dryer went road service came
my 2006 freightliner columbia air dryer went road service came out and bypassed dryer so i could get home with it he had to cut inlet supply fitting from tank cause air line end was rusted could not t… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
14,691 satisfied customers
2006 freightliner with mbe 4000, started fine, ran about 10
2006 freightliner with mbe 4000, started fine, ran about 10 minutes, sat in the shop for 90 minutes now won't start. cranks fine, absolutly no smoke or indication of fireing. while cranking, display r… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
hi i have a 2006 freightliner century with the series 60 detroit
hi i have a 2006 freightliner century with the series 60 detroit engine and it coughs and sputters and bulks and shoot out puffs of black smoke until it gets up over speed 60 and im getting poor fuel … read more
Don
Don
fleet superintendent
Vocational, Technical or Trade Scho
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I have 2003 freightliner columbia sleeper tractor, my trailer
I have 2003 freightliner columbia sleeper tractor, my trailer brake lights are stuck on,when im driving I see them come on and stay on, then look back there off for a while then back on… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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I have an o6 freightliner Columbia with a Detroit it is running
I have an o6 freightliner Columbia with a Detroit it is running hot and blowing black smoke. Last night when I stopped and opened the hood there was an air sound and a buzz sound if I push on the actu… read more
FIX-IT
FIX-IT
Comercial transport technician
Vocational, Technical or Trade Scho
829 satisfied customers
I have a MBE 4000 in a 2004 Columbia Class Freightliner. It
I have a MBE 4000 in a 2004 Columbia Class Freightliner. It appears that there is oil leaking from the exhaust valve on the cylinder head. Is this oil leak from worn rings (compression and/or oil cont… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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I have a 2007 freightliner Columbia with a Detriot engine,
I have a 2007 freightliner Columbia with a Detriot engine, yesterday it started blowing black smoke, losing power, check engine light came on and engine fan also. I was told that the egr valve was bad… read more
Buddy
Buddy
Diesel Technician
High School or GED
703 satisfied customers
have a series 60 and it started smoking (blacksmoke)when I
have a series 60 and it started smoking (blacksmoke)when I give it fuel there is no knocking of injectors it seems to choke when I gunned it at takeoff first 5 gears then it runs good what could it be… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
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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

14,691 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

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Curtis B.

Curtis B.

Technician

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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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