Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
Replaced exhaust manifold gasket, truck ran fine for a
replaced exhaust manifold gasket, truck ran fine for a couple of minutes, then it got a terrible miss in it, raw fuel, upon shutting it off, all sorts of pre ignition, also while running, tried to ble… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,023 satisfied customers
I have a 2000 Mack CH with 480k miles. Eaton LL. Just had
I have a 2000 Mack CH with 480k miles. Eaton LL. Just had eighth gear replaced as it was popping out of gear at 55. Got truck back , did not replace clutch as it was still ok. Now truck high revs LIKE it pops out of 8th but shifter is still in hole,let off and throttle and it takes off again. I have been in this industry for 35 years and has me shaking my head. New shifting tower, New u joint. Still same problem? … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
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Got an 07 freightliner columbia. Has an acert c13. Truck
Got an 07 freightliner columbia. Has an acert c13. Truck runs pretty good when engines cold but literally as soon as thermostat opens, it runs really bad for about 5 minutes then sort of clears up but… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
2000 CH 613 / E7 WITH 6 UNIT PUMPS. ONLY BARELY RUNS ON
2000 CH 613 / E7 WITH 6 UNIT PUMPS . ONLY BARELY RUNS ON STARTING FLUID … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,405 satisfied customers
I have a 1999 ch13 with E7 427 replaced cyl heads new
I have a 1999 ch13 with E7 427 replaced cyl heads new injectors and pumps contuning to have heavy black smoke at snapthrottel clears up some at high rpm pressur tested air charge holds 20 psi with no … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,405 satisfied customers
I have a cat 928g with 3116 motor I don't have a serial
I have a cat 928g with 3116 motor I don't have a serial number bt we have replaced turbo injector fuel pump and filters and the loader still has no power idk if maybe one cylinder dead or what should … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,304 satisfied customers
I have a 1996 mack ch613 starts then dies as soon as it
I have a 1996 mack ch613 starts then dies as soon as it starts its getting a code of pid 183 fmi8 6-1 is the oem code cant find any trouble shooting for the code all its saying is no fuel request line… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,405 satisfied customers
1992 Mack CH613: When started, will automatically go to 1400
1992 Mack CH613: When started, will automatically go to 1400 RPM and continue to climb. We messed around with the injectors and eventually went back to a normal idle. After driving 15 miles, and chang… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
1999 Peterbilt with Cummins n14 -- engine is loping, like a
1999 Peterbilt with Cummins n14 -- engine is loping, like a miss but has great pull and power, its just at an idle i can hear it lope.. no fault codes present,.. did accelerated cylinder test and all … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,405 satisfied customers
I have 2003 Mack Ch613 with an E7-427. Engine won't start,
I have 2003 Mack Ch613 with an E7-427. Engine won't start, im not getting any power to the EUP. We have already swiched the EPU still no luck.… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,405 satisfied customers
CUMMINSDR only please i have an ISM esn-35020751 in a Volvo,
CUMMINSDR only please i have an ISM esn-35020751 in a Volvo, its having some kind of ticking/knock/ Slight miss, at about the start of 1750RPMs... i performed an Accelerated Cyl Cutout test and i got … read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,700 satisfied customers
2002 International 4300 DT466 Allison Auto trans. 2H512173
2002 International 4300 DT466 Allison Auto trans. 2H512173 last 8 of vin. Truck starts to miss around 1800rpm to 2000 once you reach speed over 65 it clears up even sitting still and accelerating it w… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 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
Have a 2000 3126B engine SN #8yl52723 that we changed number
Have a 2000 3126B engine SN #8yl52723 that we changed number #6 injector today per diesel shop recommendation for hard start and lack of power. The truck did run okay and would start but we were tryin… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,234 satisfied customers
2000 mack cl 713 etech 427 engine. engine misses after rolling
2000 mack cl 713 etech 427 engine. engine misses after rolling and/or idles for a while. does not happen in cold weather does it after 45-50 degrees outside. all uni pumps tested and are ok. transfer … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,405 satisfied customers
Can you help me with the engines Mack produced and the
Can you help me with the engines Mack produced and the differences in them also how to distinguish the difference . Like the E7 to the MP series etc. The date range I would be looking for is from the … read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,740 satisfied customers
i have a 1995 mack dumptruck with the vin number 1M2P267C9VM029858
i have a 1995 mack dumptruck with the vin number 1M2P267C9VM029858 MODEL NUMBER RD588S the owner had fuel issues with it and yesterday it just stopped working the injection pump voltage is looking lik… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
11,405 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

11,405 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,234 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

4,023 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,740 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, Network Engineer specializing in CAN faults, Aftertertreatment, and vehicle communications

cumminsdr

cumminsdr

Mechanic

1,700 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

1,571 satisfied customers

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

Chris (aka-Moose)

Chris (aka-Moose)

Technician

353 satisfied customers

24 years of experience diagnosing & repairing

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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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