Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
I need to replace the rocker arm on Nr 7.....and when
I need to replace the rocker arm on Nr 7.....and when cranking the engine to lower the rods to the lowest point,the left rocker stays loose … read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
530 satisfied customers
Running overhead on isx 15 single cam im on #1 adjust valves
Running overhead on isx 15 single cam im on #1 adjust valves and brake but. Jake backed all the way out cant fit 7mm… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,824 satisfied customers
I will try and get straight to the point; our c9 [serial
Second opinion] I will try and get straight to the point; our c9 [serial number C9A00831-ARR. NO.(###) ###-#### has been changed out with a new C9 engine [serial number C9Z00679-ARR.NO.(###) ###-####;… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
I have a 2001 international with a DT466 engine that is
I have a 2001 international with a DT466 engine that is popping thru intake and noise increases with speed of the engine. Truck wash running but now it just stumbles and at one point gave a lot of whi… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
214 satisfied customers
I have a 2006 Cummins ism that was having a fuel knock.
I have a 2006 Cummins ism that was having a fuel knock. Replaced all 6 injectors, and now I have an issue...the best way that I can describe it is the the pushrods for the injectors seem like they are… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
530 satisfied customers
1987 3406B came in with fuel in the exhaust, pulled valve
1987 3406B came in with fuel in the exhaust, pulled valve cover #1 exhaust and #2 intake pushrods bent, #1 just slightly, #2 had fallen into oil pan.. This truck had an engine rebuild done about six m… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
I rebuilt a 3406b engine from the ground up rebuilt the head
I rebuilt a 3406b engine from the ground up rebuilt the head ran it twice under load for 3hrs 1st time engine bent 4 push rods replace all 12 with new ran it 2 time bent 1 pushrod now I have broken ro… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
2013 Cummins ISX basket case! In 9 months it has been in
2013 Cummins ISX basket case! In 9 months it has been in shop 3 times for motor failure. It has had all new pistons/liners, head, egr cooler, turbo, actuator, egr tube, compressor, radiator,etc. In sh… read more
Mike Mcmillan
Mike Mcmillan
Triage Tech/Shop Foreman
Associates
530 satisfied customers
I have a cat c7 2006 This developed a ticking noise in the
I have a cat c7 2006 This developed a ticking noise in the overhead. Found #4 cylinder exhaust valve with a 1/4 inch gap in the valve adjustment. I turned the screw down. cannot find out why there was… read more
FIX-IT
FIX-IT
Comercial transport technician
Vocational, Technical or Trade Scho
829 satisfied customers
I have a Catapilar D3 Dozier, it only has 2100 hrs, and has
I have a Catapilar D3 Dozier, it only has 2100 hrs, and has started blowing oil out the vent tube. … read more
catmastertech
catmastertech
Field service technician
Vocational, Technical or Trade Scho
1,317 satisfied customers
I have a 2005 c15 acert mxs engine. With the assistance of
I have a 2005 c15 acert mxs engine. With the assistance of my carrier's shop mechanics I diagnosed and replaced a cracked intake valve actuator. When all was said and done we went to check the valves … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,293 satisfied customers
I am getting ready to adjust the valves on a 1992 izuzu npr
I am getting ready to adjust the valves on a 1992 izuzu npr with a 4bd2tc diesel engine. any tips or advice? It has a knocking noise. Does a bad injector cause any kind of knock?… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
We have an 8.3L ISC 230 Cummins in a 2000 Freightliner FL70
We have an 8.3L ISC 230 Cummins in a 2000 Freightliner FL70 that will not hold the valve lash adjustments on both the intake and exhaust valves on #4 cylinder for more than a few minutes. All the othe… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,824 satisfied customers
Komatsu motor found lifter spring broke push rod bent can I
Komatsu motor found lifter spring broke push rod bent can I replace parts without taking head off?… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
13,428 satisfied customers
can the cam gear be removed and replaced on a c 8.3 cummins
can the cam gear be removed and replaced on a c 8.3 cummins without removing the cam shaft the timing gear housing needs replaced… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,824 satisfied customers
I have a ford f600 with a 370 2v engine. it started popping
I have a ford f600 with a 370 2v engine . it started popping through carb.went in to the engine found cyl 4 rocker arm was not working the exhaust valve then went in futher and the cam lobe was knocke… read more
Curtis B.
Curtis B.
Technician
Associate Degree
1,806 satisfied customers
I AM WORKING ON A MACK 1999 460 WITH A E7 ENGINE AND WE
I AM WORKING ON A MACK 1999 460 WITH A E7 ENGINE AND WE ARE TRYING TO RUN THE OVERHEAD AND JUST WANT TO MAKE SURE WE ARE DOING IT CORRECT I HAVE DONE PLENTY OF OLDER ONES BUT THIS ONE HAS A TON OF SLA… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
4,563 satisfied customers
Have a 3406c cat, driver was outside truck while it was idling
Have a 3406c cat, driver was outside truck while it was idling said he heard bad knock type sound for a few seconds then it went away but was followed by a miss, I pulled the covers found #2exh pushro… 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

13,428 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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