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Mack cxu 613 won't crank. Check fuel filter warning came on,
Mack cxu 613 won't crank. Check fuel filter warning came on, so I had them changed. After starting the truck, it slowly died. After using primer and cranking the truck again, this time with foot on pe… read more
Mike Mcmillan
Mike Mcmillan
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6,765 satisfied customers
16 Mack cxu MP8 cooling fan stuck on. apply air to hose
16 Mack cxu MP8 cooling fan stuck on. apply air to hose disengages. Noid not letting air pass … read more
TomcM28
TomcM28
Owner
Associates
14 satisfied customers
Have SPN 5246 Fmi 16 on a mack. 2011 Mack CXU. Mack mp8. I
Have SPN 5246 Fmi 16 on a mack JA: What's the make, model, and year of your heavy truck? Customer: 2011 Mack CXU JA: What's the engine type and size? Customer: Mack mp8 JA: Is there anything else the … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
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6,765 satisfied customers
Mack MP8 fuel primer pump is taking forever to prime, truck
Mack MP8 fuel primer pump is taking forever to prime, truck won't start, checked for double gaskets and for leaks. There is no leaks … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,765 satisfied customers
I forgot my cab light on overnight in my 2015 mack cxu. It
Hello. I forgot my cab light on overnight in my 2015 mack cxu. It drained my 7yr old batteries tremendously. I couldn't start the vehicle without getting a jump several times. I replaced the batteries… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
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6,765 satisfied customers
Speedometer quits working and the truck loses power. 2013
speedometer quits working and the truck loses power. 2013 mack mp8 … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
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6,765 satisfied customers
I have in my shop a 08 cxu 613 Mack with mp8 engine has
I have in my shop a 08 cxu 613 Mack with mp8 engine has active codes for 1,2,3 injector open circuit. I suspect a broken wire. Mack says the wiring harness is 1 piece for complete engine, if I had the… read more
Joe Green
Joe Green
71 satisfied customers
My Mack cxu 613 is saying check fuel filter. It is also
My Mack cxu 613 is saying check fuel filter. It is also sputtering and occasionally the speed decreases … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,765 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
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6,765 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
5,115 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
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6,765 satisfied customers
I have a Mack 2011 with mp8 it shakes badly when it reach
I have a Mack 2011 with mp8 it shakes badly when it reach above 50 I have change the fuel filter housing and still the same I have to gear down from 10 to 9 speed because the vibration is really bad what can be the possible problwm … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,765 satisfied customers
2014 Mack CXU 613 is not getting fuel after new filter
2014 Mack CXU 613 is not getting fuel after new filter housing and fuel pump. Is there a complete fuel system diagram?… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,765 satisfied customers
After having a quacolmm instaled in a Mack CXU with a MP8
Hello,After having a quacolmm instaled in a Mack CXU with a MP8 engine the jake brake and cruise control has quit working. … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
6,765 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
6,765 satisfied customers
Putting on evo tech performance chip on 2015 mack cxu model
putting on evo tech performance chip on 2015 mack cxu model pinnacle mp8 … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
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6,765 satisfied customers
I HAVE A 2009 MACK CXU WITH MP8. GOING DOWN INTERSTATE IT
I HAVE A 2009 MACK CXU WITH MP8. GOING DOWN INTERSTATE IT WILL LOSE POWER AND BOOST THEN PICK BACK UP … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
6,062 satisfied customers
Ist hivin me thise Nox monitoring failure. 2012 mack cxu.
Ist hivin me thise Nox monitoring failure JA: What's the make/model/year of your truck? Engine type? Customer: 2012 mack cxu. Mp8 JA: Are you fixing your truck yourself? What have you tried so far? Cu… read more
Andy
Andy
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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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