Medium and Heavy Trucks

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I have a cm870 when pulling out loaded and on a hard pull it
I have a cm870 when pulling out loaded and on a hard pull it will lose power like turning the key off and back on and occasionally show code for low fuel psi and will sometimes even quit. May go days … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
N14 cummins celect, what is most common reasons when engine
N14 cummins celect, what is most common reasons when engine sputtering, specially when going thru the low gears powering up, some detonations and white raw fuel smoke, I know my injector #6 started fa… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
I HAVE A 2005 PETERBILT WITH A C13. IT HAS STARTED BLOWING
I HAVE A 2005 PETERBILT WITH A C13. IT HAS STARTED BLOWING LIGHT BLUE SMOKE AND STEAM, i PULLED ALL THE INJECTORS AND REPLAICED ALL THE INJECTOR SEALS, I ALSO READJUSTED THE OVERHEAD. iT STILL BLOWS T… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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Isx. 12 cascadia isx15. Trying to find the issue, smoke
trying to find the issue, smoke coming from oil filler … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
4300 international started and runs but has low power. Had
4300 international started and runs but has low power. Had to replace idm, idm wire harness #6 injector runs don't skip no codes low power and smoking… read more
Alex Olsen
Alex Olsen
auto/diesel/industrial
524 satisfied customers
CATMAN c15 6NZ73202. i replaced 6 injectors because it was
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Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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I have freightliner Colombia 2005 series 60. It's blowing to
Hi I have freightliner Colombia 2005 series 60 . It's blowing to much & white smoke & loosing power … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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Buddy, I have a 2007 Columbia X35320, with a 14 liter 475 hp
Hi buddy, I have a 2007 Columbia X35320, with a 14 liter 475 hp series 60. The problem I'm having has cost a lot of money and know one seems to be able to figure it out. Loaded or empty on any kind gr… read more
Expert
Expert
7,469 satisfied customers
92' n14 misses at idle pulled inj. wires, no. 2 and no. 3
92' n14 misses at idle pulled inj. wires, no. 2 and no. 3 seems little or no effect on running. missing or not. all others very noticeable effect. also engine flutters when accelerating then clears ou… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
I recently inframed a 3406e 2ws engine because of a scored
Hello, i recently inframed a 3406e 2ws engine because of a scored piston and liner. I believe this happened because of wrong trim codes. One injector must of been "hot".. i reset trim codes to 80%. En… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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1994 detroit 60 series miss under load. Miss bobtail but
1994 detroit 60 series miss under load. Miss bobtail but very faint. Sometimes miss at idle sometimes not. I have bypassed fuel lines. I have good fuel psi..ive cleaned all connections on power and ne… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Have a c-12 cat engine was running good one day and the next
have a c-12 cat engine was running good one day and the next day ran about 12 miles and It was smoking a lot of black smoke and a poping noise on the muffler… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
idling, engine sounds great. However, coming up through the
idling, engine sounds great. However, coming up through the gears it seems to miss and blows black smoke. Installed new head and injectors. Changed out timing sensors, ecm and checked turbo. Still sam… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
have a 2005 GMC 5500 cabover with diesel (Isuzu?) engine.
have a 2005 GMC 5500 cabover with diesel (Isuzu?) engine. running rough, with a miss. smoother when warm. stalls at times when hot. hard start. suspect injector. is there anything else that may cause … 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
Have a 6nz fuel return very hot put second new pump as well
Have a 6nz fuel return very hot put second new pump as well as bypass and regulator valves new filter housing fuel lines diverted valve on return wiring harnesses ECM to head and inside new injectors … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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My truck 980000 miles on it was running great its a 2004 Columbi
My truck 980000 miles on it was running great it's a 2004 Columbia frieghtliner with a 60 series Detroit I took it in to have it seviced and over head ran. I picked my truck up drove it about 10 miles… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
International 4700: oil leaking out of exhaust ports 4, 5,
oil leaking out of exhaust ports 4, 5, 6 only. All valve seals have been replaced, 3 new injectors installed and a new turbo installed. Put back together, started and still have smoke out the exhaust … read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 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

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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