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Related Medium and Heavy Trucks Questions
How does the injectors work on the new common rail system
How does the injectors work on the new common rail system for the MP8 Mack engine … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,292 satisfied customers
I have a 2007 mack with a ami 370 that sounds like it
I have a 2007 mack with a ami 370 that sounds like it dropped a vavle how can I check it for a dropped vavle on the head… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
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4,292 satisfied customers
2000 mack e7 350 change front head piston liners rod
2000 mack e7 350 change front head piston liners rod bearings truck smoks alot … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,292 satisfied customers
I have a 2007 mack with the 380 engine i shut truck down for
Second opinion] i have a 2007 mack with the 380 engine i shut truck down for the day and next morning it wont start it wont hold prime i have new fuel pump new filters and we cant get prime pulling of… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 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
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Got a EM7-300 Mack 11GBA24622 P3 ....... was running fine
got a EM7-300 Mack 11GBA24622 P3 ....... was running fine then shut off like it ran out of fuel, cracked injectors no fuel coming out, replaced lift pump still nothing.. pressurized fuel tank getting … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 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
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,292 satisfied customers
I just bought am 08 Mack with the MP7 engine this past
Hello, I just bought am 08 Mack with the MP7 engine this past Saturday. Drove it for about two hours and noticed that it started losing power and acted like it was starved for fuel. Put more fuel in i… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
We have a 1999 MR688 w/400. Sudden lack of power, missing
We have a 1999 MR688 w/400. Sudden lack of power, missing and blowing white smoke. Oil pressure seems normal. Was running fine until today. Any ideas?… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
Working on a mack (mtg date 02/1999). engine is an e7 427.
working on a mack (mtg date 02/1999). engine is an e7 427. had a miss on #1 and #3 cylinder. Confirmed this by loosening the injector lines at the electric solenoids. I installed 2 reman injectors. #1… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I am working on a mack ch613, it has an E7 engine. engine
I am working on a mack ch613, it has an E7 engine. engine has a miss. I cracked the injector lines at the electric solenoids and #1 and #3 make no difference. I was thinking of swapping two of the sol… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
Cant get air system to pressure up..no leaks new governor.
Can't get air system to pressure up..no leaks new governor. .I'm able to hold air pressure back with thumb at air compressor… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
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I have an 2005 Mack CV713 427 AI engine. Driving yesterday...heard
I have an 2005 Mack CV713 427 AI engine. Driving yesterday...heard strange sound...then shortly after had to pull over due to loud sound and loss of power. Engine remained running with missing sound c… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
Have a460 mack was spitting and cracking in exhaust put new
Have a460 mack was spitting and cracking in exhaust put new head on had injectors tested now it is slow to open up and has feul showing where exhaust goes together. And the smell of raw feul also low … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Hello, I have been reading your answers, and I am happy with
Hello, I have been reading your answers, and I am happy with your correspondence with customers. I have a 93 Mack E7 Mechanical engine that developed low oil pressure shortly after replacing a cylinde… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
we are working on a 1991 mack with an e6 4 valve motor in it.
we are working on a 1991 mack with an e6 4 valve motor in it. the engine has the front cover pointer and markings on the damper pulley. we adjusted all of the valves and they are fine, but when we kee… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
Problems with air in radiator on Mack ch613. Have replaced
Problems with air in radiator on Mack ch613. Have replaced air compressor 3 times. Still getting air. If we bypass the compressor we don't get any air bubbles.… read more
Jim
Jim
Diesel tech.
212 satisfied customers
We have a 2007 Mack truck thats loosing power while driving,also
We have a 2007 Mack truck that's loosing power while driving,also the cruise control don't work but when the driver turn the emergency flasher on everything works normal the power is back normal and t… read more
spankyjr1
spankyjr1
Retired
Vocational, Technical or Trade Scho
420 satisfied customers
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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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