Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I have a Mack SXU VISION 2014 with motor D13 MP8. I have a
Hi, I have a Mack SXU VISION 2014 with motor D13 MP8. I have a leak in the exhaust leak with the smell of oil and gasoline I have checked the head and the turbo, and both are good Does anyone know wha… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
420 satisfied customers
I have a 2017 Mack GU813 that was running great I changed
I have a 2017 Mack GU813 that was running great I changed out the fan clutch is was bad and now the truck is running rough. I have three codes Particulate matter sensor regeneration. Incomplete, turbo… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
420 satisfied customers
Does this cost money? 2013 mack mru with mp7 motor. I
I started the truck a few days ago and noticed a lot of white smoke coming from the exhaust. Took off exhaust pipe at the turbo and started it it up again. Coolant and white smoke came pouring out. I shut the truck off and checked the dipstick. It was very full and very milky so coolant is getting into the engine. I dropped the oil pan and pressurized the coolant system and noticed coolant coming out of the 5th cylinder. I noticed dripping from the inside of the piston sleeve. It came down the piston and dripped off the wrist pin. It looked like the sleeve was fine with no visible cracks. I took the exhaust manifold off and looked into the exhaust port of the 5th cylinder, It was full of coolant. I noticed a tiny bit of what looks like maybe copper in the exhaust port. My guess is either a blown head gasket, or maybe an injector cup? I know the injector cups are copper. I personally drive this truck every day and I know for a fact it never even got close to overheating. Even with coolant coming out of the turbo it started right up and idled normally. After letting the truck sit overnight i tried to start it one more time to get a quick video but the motor was locked due to the cylinder being full of coolant i assume. I didn't keep trying to crank it out of fear of breaking something. So has anyone had this issue? Would you say an injector cup? blown head gasket? cracked head? The only Check Engine Light Code that came on was low coolant in the reservoir. … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
420 satisfied customers
I have another Mack mp7 question. I have a garbage truck in
I have another Mack mp7 question. I have a garbage truck in here now, it came in with a low power complaint. Basically it would barely pull its self. Dropped the fuel filters diesel fuel looked like l… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
420 satisfied customers
I have a freightliner with a dd15 engine. It was losing fuel
I have a freightliner with a dd15 engine. It was losing fuel pressure and I had to change the check valves and the fuel filter housing. The truck started and ran fine and then suddenly shut off. When … read more
Eddy
Eddy
HD Truck Tech
GED
2 satisfied customers
I'm need the overhead procedure for a 2012 Mack chu 613 with
I'm need the overhead procedure for a 2012 Mack chu 613 with an mp8.vin# ***** I got one on here last week from you but the instructions don't match the timing marks on the camshaft. Any help will be … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
420 satisfied customers
When adjusting the valves on a e7 460 mack. i rolled it
when adjusting the valves on a e7 460 mack. i rolled it around to 1 and 6 on fly wheel do you adjust both valves at this time. problem i am having is intake valves are still half open… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
We have a 2005 international 4900 series with a Cummins ISX
We have a 2005 international 4900 series with a Cummins ISX engine. The engine smokes extreme and there is pressure in the return fuel system. Injectors 4, 5, and 6 are clearly showing signs of damage… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
2012 international workstar with maxxforce engine has no
2012 international workstar with maxxforce engine has no codes but 4 and 6 are missing with excessive smoke smells like raw fuel out exhaust. Cant tell much of difference when cut them two cylinders o… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
1990 Mack E6 613, we just replaced the head gaskets and had
1990 Mack E6 613, we just replaced the head gaskets and had a mechanic from Mack come a do a valve adjustment. We continued to put engine back together but, when we added antifreeze it started to leak… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
I have a 2004 Ford F350 Superduty 6.0L that is blowing smoke
I have a 2004 Ford F350 Superduty 6.0L that is blowing white smoke whether the engine is hot or cold. There are no codes, it runs terrible while the exhaust smells like raw diesel fuel. The truck has … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
I have a international 466e that had a scored cylinder which
I have a international 466e that had a scored cylinder which I replaced and fixed. Now that I have it all back together it wants to blow antifreeze out of the cap. What is weird about this is that it … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,590 satisfied customers
03 c7 drove in shop installed new head now have no power no
03 c7 drove in shop installed new head now have no power no codes all pids look right feul pressure good pass injector test high pressure oil test pass… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
I have a n14 lost power, changed fuel filter and still slugash
I have a n14 lost power, changed fuel filter and still slugash at low rpms my fuel milage went south checked turbo spins free smokes at mid range. Tried to cut out injectors and you could here diff on… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
We have Diesel going into the oil sump where would the oil
We have Diesel going into the oil sump where would the oil be coming from ??? We have already fitted the following and diesel continues to leak into the oil New Seal on EPU fitted New Seal on injector… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
Possible problem with a mack(###) ###-####motor It has used about
Possible problem with a mack(###) ###-####motor It has used about a gallon of oil a day for past 3 years. It now misses. It is the #3 cyc. from cracking the lines to see which cyc it is and it leakl f… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
I have a 2006 Mack CNH613 with a AC-460P. Truck over heats
I have a 2006 Mack CNH613 with a AC-460P. Truck over heats and boils over in res tank. Getting Exhaust gases in coolant.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
2007 ISX 475/1650, 1,370,000 kms, CM870, over fuels to the
2007 ISX 475/1650, 1,370,000 kms, CM870, over fuels to the point where raw fuel is dripping out exhaust, lots of white smoke. Misses and backfires when applying throttle, runs rough on start up, smoot… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

11,590 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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