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On a 2012 mack mp8 engine can u tell me exactly where this
on a 2012 mack mp8 engine can u tell me exactly where this fuel check vavle is on the front of the head ,if its on driver or passenger side… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,883 satisfied customers
My 2008 Mack is showing fuel restrictions and running
My 2008 Mack is showing fuel restrictions and running poorly … read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,806 satisfied customers
2014 mack Pinnacle MP8 engine truck cranks over but will not
2014 mack Pinnacle MP8 engine truck cranks over but will not start unless the throttle pedal is quickly pumped, and it still takes several attempts.truck will start normally if running, shut down and … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,883 satisfied customers
2012 mp8 cranks fine cold start hot low power code pdi 94
2012 mp8 cranks fine cold long start hot low power code pdi 94 fmi 7 … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,883 satisfied customers
2012 Mack mp8, fuel filter base/housing has a manual pump to
2012 Mack mp8, fuel filter base/housing has a manual pump to fill filters manually, that manual pump will not stay in … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,883 satisfied customers
I have a 12 cxu613 mp8 engine All of a sudden today started
I have a 12 cxu613 mp8 engine All of a sudden today started missing really bad and started running WArM . pulled over let cool off full of water, fan working, starts back, cant go 2 miles before temp … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,883 satisfied customers
I have the code p113000 on a Mack mp8. The code is exhaust
I have the code p113000 on a Mack mp8. The code is exhaust post-treatment fuel air bleed valve stuck closed. I'm trying to figure out where the valve is. Could you help with that? … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,883 satisfied customers
2009 Mack GU713 with a MP8-425M Hard start when sits
Second opinion] 2009 Mack GU713 with a MP8-425M Hard start when sits overnight cranks over then shuts off … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
It has started leaking fuel back out of the head overnight.
It has started leaking fuel back out of the head overnight. It is losing its prime.I was going to replace the check valve on the return line but do not know where it is located. … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,883 satisfied customers
2012 mack vision mp8 engine fuel is loosing prime after
2012 mack vision mp8 engine fuel is loosing prime after sitting over night also what hours power setting will it get best fuel mileage thanks… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,883 satisfied customers
I have a mp8 Mack with rough idle but runs good at full
I have a mp8 Mack with rough idle but runs good at full speed … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,883 satisfied customers
HAVE A 2011 GXU 613 MACK MP8 ENGINE FUEL LEAK DOWN OVERNIGHT
HAVE A 2011 GXU 613 MACK MP8 ENGINE FUEL LEAK DOWN OVERNIGHT REPLACED FILTER BASE TRYING TO FIND OUT IF FUEL SHOULD COME OUT OF RETURN FUEL LINE WHILE PRIMING FILTERS THE PRIMER VALVE WAS LEAKING FUEL… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,883 satisfied customers
I have a 2009 Blue Bird school bus 6.7 isb bus. Will run
I have a 2009 Blue Bird school bus 6.7 isb bus. Will run most of route and may shut down. You can hand prime the sustem at the fuel seperator and cyle the ign switch and most of the time it will start… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,883 satisfied customers
UNIT EQUIPPED WITH A C7. TRUCK IS HARD STARTING/LOSING
UNIT EQUIPPED WITH A C7. TRUCK IS HARD STARTING/LOSING PRIME. IF YOU PRIME ENGINE AND GET IT STARTED, TRUCK RUNS FINE WITH NO ISSUES. LET UNIT SIT OVERNIGHT AND IT WILL LOSE PRIME AGAIN. NO SIGNS OF E… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
Where is the fuel transfer pump located on an MP8 425E Mack
Where is the fuel transfer pump located on an MP8 425E Mack engine ? … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,883 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
5,454 satisfied customers
Got a 2009 mack gu713 when it gets hot and you shut it off
got a 2009 mack gu713 when it gets hot and you shut it off will crack for every and not start again only when hot not building fuel pressure let sit for awhile and cool off starts right back up … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
There are two spin on fuel filters on my 03 387 my truck is
There are two spin on fuel filters on my 03 387 my truck is sucking air into fuel system. I have a o3 Pete with a 3406e cat. One filter is located below hand pump the other filter is on frame and has … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
5,454 satisfied customers
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Daniel Wilson

Daniel Wilson

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Owner at DJ Wilson

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Wayne

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worked on, Gmc, Macks, Freight liner,Mercedes Benz,,Ford, sterling

Jeremy

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Curtis B.

Curtis B.

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Chris (aka-Moose)

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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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