Medium and Heavy Trucks

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I have a 1999 ch13 with E7 427 replaced cyl heads new
I have a 1999 ch13 with E7 427 replaced cyl heads new injectors and pumps contuning to have heavy black smoke at snapthrottel clears up some at high rpm pressur tested air charge holds 20 psi with no … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
3,632 satisfied customers
Have 05 mack vision 427 engine i m loosing power dont have
Have 05 mack vision 427 engine i m loosing power dont have top end pulling power put new turbo on running atleast 30 lbs boost didnt fix it put new nozzles on 3 tested bad so didnt check other 3 just … read more
Steven
Steven
Triage Tech/Shop Foreman
Associates
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I have a 2003 379 c15 6nz. My oil tempos at 220 with a new
I have a 2003 379 c15 6nz. My oil tempos at 220 with a new teltek gauge and sensor. My water temp shows around 220-225 when working the motor is working hard. I thought it sounds high. Have new thermo… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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2007 INTERNATIONAL MXT has code 613 FMI 14, SID 34 FMI 4 and
2007 INTERNATIONAL MXT has code 613 FMI 14, SID 34 FMI 4 and SID 1 FMI 5 can you help with these codes?… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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Have an 06 international 4300 dr466 runs fine when cold
Have an 06 international 4300 dr466 runs fine when cold drive it for like 10 to 15 miles starts jerking and eventually dies … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
3,632 satisfied customers
2006 mack CHN 613 Mid 128 PID 270 FMI 5 only active code.
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Steven
Steven
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I've got a 6 4 flash code have checked resistance from abs h
I've got a 6 4 flash code have checked resistance from abs h and L circuit have 60 ohms. Tried used ecu and vecu no luck. Truck still only idles 900 rpm and will go into coolant shutdown before 150 de… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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I have a 353 in a Gamagoat. It is overheating under load on
I have a 353 in a Gamagoat. It is overheating under load on a warm day. I've replaced radiator, t stat (170) , checked cooling system (Clean) and water pump. I did replace injectors (N50) and followed… read more
Curtis B.
Curtis B.
Retired service manager
Associate Degree
3,486 satisfied customers
I need the specs for a mack cylinder balance test. What is
I need the specs for a mack cylinder balance test. What is normal % range for each cylinder... allowable tolerances etc can anyone get me this info?… read more
Steven
Steven
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Need torque specs for E 7 400 engine. Mack. e7-400. 2001.
Need torque specs for E 7 400 engine JA: What's the make/model/year of your truck? Engine type? Customer: Mack . e7-400. 2001. Mack JA: Are you fixing your truck yourself? What have you tried so far? … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
3,632 satisfied customers
Mack e7 sputters/ misses when you let it idle than take off.
mack e7 sputters/ misses when you let it idle than take off. it clears out normally by the first shift or two and runs out normal … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
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I have a 03 Mack E7 427 engine it runs hot with thermostats
I have a 03 Mack E7 427 engine it runs hot with thermostats in you can take them out and it does not get above 160 degrees empty soon as you put thermostats back in it starts running hot what could be… read more
Wayne
Wayne
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Vocational, Technical or Trade Scho
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M-11 Cummings in a 1990 Volvo I have owned 9 years always
M-11 Cummings in a 1990 Volvo I have owned 9 years always ran cold 160-170 tops and now water buzzer going off changed t-stat and water pump did not help. Front of motor at 160 degrees and back or #6 … read more
spankyjr1
spankyjr1
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Vocational, Technical or Trade Scho
420 satisfied customers
Hey Cat Man. I have a 2003 pete with a c15 6nz in it. It runs
Hey Cat Man. I have a 2003 pete with a c15 6nz in it. It runs great with no water or oil loss since an out of frame 115,000 miles ago. Since the rebuild it's ran hot. I've replaced the radiator and th… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 satisfied customers
I just bought a 2015 Mack CXU-613 heavy haul truck. During
I just bought a 2015 Mack CXU-613 heavy haul truck. During the first week of operation (2,700 highway miles), the oil temperature has always stayed around 240-244F, while oil pressure gauge shows 45-5… read more
Wayne
Wayne
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I have a 2005 Kenworth T800 with a c-15 cat engine. Truck is
I have a 2005 Kenworth T800 with a c-15 cat engine. Truck is overheating, the fan won't kick in and once I switch the fan to manual, the temperature stays high and doesn't drop. I replaced both thermo… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
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Which mechanical engine R Model Mack Truck?New venture:
Which mechanical engine R Model Mack Truck? New venture: I am looking to purchase a good, used daycab tractor to pull chip and/or log trailers in SE Virginia. I am really considering an '80s vintage R… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 satisfied customers
I have a 94 Mack with approx 700,000 miles on an E7 400 engine.
I have a '94 Mack with approx 700,000 miles on an E7 400 engine. I have white smoke coming from the blow by tube--regular exhaust from the stack. No loss of power. Temperature on the coolant is normal… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,965 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

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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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