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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
4,563 satisfied customers
I have a 03 ch613 Mack with a 427 that I need help with.
I have a 03 ch613 Mack with a 427 that I need help with … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
528 satisfied customers
I'm having an issue with a 3126 cat motor in a c8500 truck.
Hi, I'm having an issue with a 3126 cat motor in a c8500 truck. It was missing pretty badly under no load and load at part throttle. Had the injectors tested and two were bad. We replaced those two an… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
Will inframe mp8 does not run correct. Mack mp8 think 09
Inframed I think timing is of crank on zere cam on tdc … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
528 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
528 satisfied customers
Is there a chart for engine warm up time according to the
Is there a chart for engine warm up time according to the outside temperature? School buses have a large interior with almost as cooling as the radiator so could you describe an idling time frame? … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
528 satisfied customers
Mack e7 sputters/ misses when you let it idle than take off.
mack e7 sputters/ misses when you let it idle than take off. it clears out normally by the first shift or two and runs out normal … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
13,376 satisfied customers
I have a 2007 Mack Granite with a MP7 engine. The model
I have a 2007 Mack Granite with a MP7 engine. The model number is ***** 713, ser# ***** The problem is fuel is mixing with the oil. What are all of the various scenarios that this could happen? I need… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
13,376 satisfied customers
Have a 07 Freightliner VIN 1FUJF0C57PW64184 with a Mercedes
Have a 07 Freightliner VIN 1FUJF0C57PW64184 with a Mercedes OM460LA. Engine start with a miss on cyl#1(exhaust temp low) and a possible overfueling on #3.(exhaust temp high) Had a inactive code presen… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,747 satisfied customers
Ive got a 2005 ih 4300 with dt466 run issues. International
yes ipc sensor, ipr sol, timing sensor, all new fuel injectors, hi psi oil pump clean out fuel lines, new fuel filter. seems like when its in a warm shop it will start, but when it sits outside over night in the cold it has problems starting and keep running.. … read more
Alex Olsen
Alex Olsen
auto/diesel/industrial
524 satisfied customers
I have a 03 Mack E7 427 engine it runs hot with thermostats
I have a 03 Mack E7 427 engine it runs hot with thermostats in you can take them out and it does not get above 160 degrees empty soon as you put thermostats back in it starts running hot what could be… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 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
4,563 satisfied customers
2006 International 4400 with a Dt466E 310HP Rough and surging
2006 International 4400 with a Dt466E 310HP Rough and surging idle warm or cold does it randomly. Loud clacking under engine cover. Replaced ICP, IPR, CPS, injector o rings, oil inlet adapters (pucks)… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
I AM WORKING ON A 2006 MACK CV-713 WITH A 427 ASET,
HELLO, I AM WORKING ON A 2006 MACK CV-713 WITH A 427 ASET, IT HAS AN ENGINE MISS ON CYL. #5. SENT ALL THE INJECTORS OUT AND 4 ARE BAD SO I INSTALLED 6 REMACK INJECTORS AND 6 NEW LINES, MISS ON CYL. #5… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,747 satisfied customers
2000 mack etech motor. Coolant in oil. Not the liners or head
2000 mack etech motor. Coolant in oil. Not the liners or head gaskets. while having oil pan off pressurised coolant system and coolant was coming out of main oil gally where oil pump would mount. So w… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
2000 FRTL FL-80 HAS 3126B CAT / 10,000 HRS. / FIRST START
2000 FRTL FL-80 HAS 3126B CAT / 10,000 HRS. / FIRST START UP IN BUILDING AT 50 DEGREES / RUNS ROUGH MISSES AND SMOKE / I HAVE REPLACED 6 INJECTORS , TRANSFER PUMP / AND PRESSURE REGULATOR CK VALVE ON … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
Have a 2007 International 4300 with a DT466E. Any time the
Have a 2007 International 4300 with a DT466E. Any time the outside temp goes below 40 degrees the truck is very hard to start. Once it starts it will smoke very heavily, grey smoke. Has all new inject… read more
tkman55
tkman55
Shop manager Trailer Refrigeration shop
138 satisfied customers
i have a c-15 cat that is loosing power on hills, but runs
i have a c-15 cat that is loosing power on hills, but runs good on all other hiway situations.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

13,376 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,293 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

4,563 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,747 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

1,824 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

1,806 satisfied customers

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

Chris (aka-Moose)

Chris (aka-Moose)

Technician

462 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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