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My truck was deleted over a year ago. He couldn't delete the
My truck was deleted over a year ago. He couldn't delete the egr valve on that particular truck. Trucks has lost tremendous amount of power almost like starving for air or fuel. Mack place cant figure… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
415 satisfied customers
2013 mp 8 shudder or buck off and on. 2013 mack pinnacle mp8
not sure if fixing myself or taking to dealer... started with fuel filters they seem to have a lot of black / possible alge … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
415 satisfied customers
Returning at you with a question My boost gauge is not
Hey bossReturning at you with a questionMy boost gauge is not working when parked I press accel pedal and i will get 5 psi after 2 secondsBefore it use to go up to 45psi in less than 1/2 a second Any … read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
I have a 2013 Mack CHU613 with the MP8 engine. 2013 Mack
-SPN 1072 FMI 4 -SPN 1127 FMI 18 -SPN 647 FMI 5 -SPN 4811 FMI 2 -SPN 4813 FMI 4 -SPN 1265 FMI 4 -SPN 3936 FMI 0 -SPN 1127 FMI 10 -SPN 1127 FMI 14 -SPN 411 FMI 7… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
415 satisfied customers
I have a Mack MP8 445 with lose of power issue. Changed fuel
I have a Mack MP8 445 with lose of power issue. Changed fuel filters still having the issue … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
415 satisfied customers
I have a 2012 mack with a mp8 engine. Getting codes mid128
I have a 2012 mack with a mp8 engine. Getting codes mid128 spn1127 fmi14 and spn94 fmi18 . Truck starts and idles perfectly. The vibration starts when loaded and accelerating when engine reaches 50mph… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
415 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
Triage Tech/Shop Foreman
Associates
415 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
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
415 satisfied customers
Have a 2011 mack with a mp8 engine whining sound from engine
Have a 2011 mack with a mp8 engine whining sound from engine at 25psi of turbo boost then it shoots up to 38psi of boost … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
415 satisfied customers
Having problems with a 2014 mack MP8. Truck seems to buck or
Having problems with a 2014 mack MP8. Truck seems to buck or shudder around 1400 rpm. Seems to be more of an issue when cool in the morning. Truck is starting fine. Injectors were updated with stainle… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
415 satisfied customers
From New Zealand, We have in our Fuel shop a Mack Granite
Hi There , My name is ***** ***** New Zealand , We have in our Fuel shop a Mack Granite MP8 EGR { deleted } truck that has been around the traps with extremely poor performance but very good fuel cons… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
I was meaning to ask what the correct turbo is for this
i was meaning to ask what the correct turbo is for this motor..haven't had the truck long and am questioning some of the parts on it… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,513 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 have this ISX 671 at my shop i rebuild this engine 6
hello i have this ISX 671 at my shop i rebuild this engine 6 months ago since that it is having a issue of low pulling power the customer pulls around 60,000 lbs at the time of rebuild we used the aft… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
207 satisfied customers
Mack Trident - Australia model: I'm in Australia and have a
I'm in Australia and have a mack mp8 engine. The early one that was egr. I'm having trouble with the egr valve, it's new and like the old one before it from 10% engine load to 75% engine load the valv… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
freightliner: A 2003 Frltlnr Columbia with a 2005 14litter
A 2003 Frltlnr Columbia with a 2005 14litter 60 Series, original engine was a 12 litter. EGR has been bypassed through the computer. I have a vibration under max acceleration while loaded or with an e… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,513 satisfied customers
How do I find a australian ecm for my 06 ac 460 Mack to make
How do I find a australian ecm for my 06 ac 460 Mack to make it pull like the big dog I think it should be?… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
I have a 2008 Peterbilt with a 2007 ISX 485 engine. I have
I have a 2008 Peterbilt with a 2007 ISX 485 engine. I have low turbo boost and a de-rate condition along with no state 3 engine brake. Some of the time the truck runs great, other times it has low pow… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
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Daniel Wilson

Daniel Wilson

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Jeremy

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Curtis B.

Curtis B.

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Technician turned service manager on multiple lines of trucks and engines, used in industry.

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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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