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Have a 2012 mack cxu613 mp8. Having trouble starting. Had
Have a 2012 mack cxu613 mp8. Having trouble starting. Had been priming filter by pushing the plunger on filter housing for 10-15 minutes it would eventually crank. Taken off line going to pressure rel… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,290 satisfied customers
Engine shutting off code spn 94 low fiel pressure. It shuts
it shuts off i wait 1minute fires up i go to move truck half blocock she will start sputtering fuel pressure drops i have laptop jpro hooked up … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a 2011 Mack mp8 I change fuel pump filter housing and
Hi I have a 2011 Mack mp8 I change fuel pump filter housing and when I picking up speed it's slow down and ask to check the filter? … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,290 satisfied customers
I'm working on a Mack CHU613 that was bought from auction.
I'm working on a Mack CHU613 that was bought from auction. Has codes spn411 fmi7, spn1127 fmi18, and spn3226 fmi12. A new and updated differential press sensor, new NOX sensors, and verified for exter… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,290 satisfied customers
Sa0 SPN94 fmi18 please this on my dash. MP8 mack cxu613.
Sa0 SPN94 fmi18 please this on my dash JA: What's the make/model/year of your truck? Engine type? Customer: MP8 mack cxu613 JA: Are you fixing your truck yourself? What have you tried so far? Customer… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,290 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
4,290 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
4,290 satisfied customers
2012 MACK MP8 ENGINE WERE IS THE CHECK VALVE FOR FUEL SYSTEM
2012 MACK MP8 ENGINE WERE IS THE CHECK VALVE FOR FUEL SYSTEM TRUCK BLEEDS BACK FUEL AFTER SITTING AWILE… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,290 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
4,023 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
4,290 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
4,290 satisfied customers
When truck is pulling a heavy load at 1000 to 1200 rpm it
When truck is pulling a heavy load at 1000 to 1200 rpm it shakes and vibrates until it gets above 1400 rpm. … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,290 satisfied customers
2012 mack with a mp8 runs fine until put under a load then
2012 mack with a mp8 runs fine until put under a load then dies restarts easily idles fine … read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,290 satisfied customers
2007 mack with an MP8 engine.The customer brought it to me
2007 mack with an MP8 engine.The customer brought it to me after spending over 20,000 at a mack dealer and having a delete done hoping it would fix his low power.i am not a Mack expert so it is a scho… read more
Mike Mcmillan
Mike Mcmillan
Shop Foreman/Triage Tech
Associates
4,290 satisfied customers
I recently retuned my MP8 deleted the DPF and egr and gave
I recently retuned my MP8 deleted the DPF and egr and gave it 48 more hp it now doesn't want to pull can hardly make 100 km per hour loaded … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
4,737 satisfied customers
I have a Mack 2011 with mp8 check engine light is on and I
I have a Mack 2011 with mp8 check engine light is on and I have code as follow … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
Under load on or steep incline it starts to get a miss along
Under load on long or steep incline it starts to get a miss along with some black smoke … read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,571 satisfied customers
I'm looking at a 2012 CXU613. Has the MP8, Fuller RTL018918B,
I'm looking at a 2012 CXU613. Has the MP8, Fuller RTL018918B, and 3.58 rears. What problems do I need to know about the MP8 regarding reliability, fuel/oil consumption? Any valve train or after treatm… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 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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