Medium and Heavy Trucks

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Related Medium and Heavy Trucks Questions
When adjusting the valves on a e7 460 mack. i rolled it
when adjusting the valves on a e7 460 mack. i rolled it around to 1 and 6 on fly wheel do you adjust both valves at this time. problem i am having is intake valves are still half open… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
2,892 satisfied customers
Engine has miss,black smoke it is a 3406 c can the air fuel
engine has miss,black smoke it is a 3406 c can the air fuel ratio cause the problem … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 satisfied customers
I have a GMC C7500 with a Cat C7. Serial number WAX66403. I
I have a GMC C7500 with a Cat C7. Serial number WAX66403. I am having a problem with the engine intermittently raising the injection actuation pressure and causing it to smoke black when the throttle … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 satisfied customers
Catman C13 kcb in a 2006 international In low speed truck
Catman C13 kcb in a 2006 international In low speed truck feels like it loses the accl pedal. Then catches right away. All within seconds. No codes present... fuel pressure is fluctuating between 55ps… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 satisfied customers
Cummins N14 missing intermittently, no check engine light,
Cummins N14 missing intermittently, no check engine light, No active or inactive codes using Insite, replaced all suction and return line, new fuel pump, new Davco filter assembly, ran shop air thruog… read more
cumminsdr
cumminsdr
Mechanic
High School or GED
1,351 satisfied customers
Morning. I have a Cat 3406B that i did an inframe on. Engine
Morning. I have a Cat 3406B that i did an inframe on. Engine runs fine, pulls good, doesnt use any fluids. The problem I am having is when using the jake. Jakes were not rebuilt at the time of inframe… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 satisfied customers
I have a 2004 Centry freightliner with ddec v Detroit. My question
I have a 2004 Centry freightliner with ddec v Detroit. My question is when accelerating and the tach is in the rang of 900 to 1300 approx. the engine cuts in and out if you give it more than 1/4 throt… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
3,164 satisfied customers
I have a 1996 Int'l with a Detroit series 60, 470 HP. Started
I have a 1996 Int'l with a Detroit series 60, 470 HP. Started having serious trouble climbing Black Mt.in NC. Nothing open Sat nite or Sunday so I limped it home 400 miles. Power loss worsened signifi… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
254 satisfied customers
i started my truck yesterday and it white smoked and is missing
i started my truck yesterday and it white smoked and is missing out when on the throttle, let it warm up and did not change… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 satisfied customers
Cat 3406E 550hp missing and spewing blue smoke while going
Cat 3406E 550hp missing and spewing blue smoke while going through low gears backing up or turning, clears up at higher rpm. Normal idle.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 satisfied customers
Cummings ISB 240 Engine!When at full power we receive the
Cummings ISB 240 Engine! When at full power we receive the 2500 RPM and then takes a second or so and the rpms drop and it starts to smoke (blue diesel smelly). Its in a bus and has some interesting m… read more
Expert
Expert
2001 volvo 12.7 60 series detroit engine (No Codes) Filled
2001 volvo 12.7 60 series detroit engine (No Codes) Filled up with fuel before will left and then drove 219 miles yesterday no problem on the way back about 50 miles from my drop off black smoke start… read more
spankyjr1
spankyjr1
Journeyman
2,734 satisfied customers
Hey Cat Man still need help on the 4MG. I replaced the injection
Hey Cat Man still need help on the 4MG. I replaced the injection pump with a used one and ive got a miss on two cylinders. 1 and 6. They seem to be firing somewhat because if we crack a line open the … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 satisfied customers
I have a 2006 Freightliner with a 14 ltr Detroit 450hp. Upon
I have a 2006 Freightliner with a 14 ltr Detroit 450hp. Upon acceleration i am getting a miss with black smoke coming out the exhaust pipe. Cruising it is fine, as soon as you ask for power is starts … read more
Clayton
Clayton
Technician
Vocational, Technical or Trade Scho
625 satisfied customers
we have a 99 freightliner with a detroit 60 in it we have had
we have a 99 freightliner with a detroit 60 in it we have had a new remanned 6 pack of injectors from detroit put in , new fuel pump,head gasket replaced and it still smokes at idle and acts like its … read more
Clayton
Clayton
Technician
Vocational, Technical or Trade Scho
625 satisfied customers
have a 04 dt466 will run great for 3 or 4 days then acts like
have a 04 dt466 will run great for 3 or 4 days then acts like its running out of fuel replaced from transfer pump alway back to fuel tank with new lines filter housing and fuel tank. when it starts fe… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
3,164 satisfied customers
I have a 6NZ and blowing blue smoke, we have changed the #4
I have a 6NZ and blowing blue smoke, we have changed the #4 injector, we did change this injector because of performing a cut out test on each cylinder. After replacing the injector setting the valves… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
4,530 satisfied customers
I have a 2000 w800 kW w/ a series 60 Detroit engine. At the
I have a 2000 w800 kW w/ a series 60 Detroit engine. At the top of the throttle when the rpms are at their highest it will start to tremble or skip. And blue smoke starts to come out the exhaust. What… read more
spankyjr1
spankyjr1
Journeyman
2,734 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

3,164 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

4,530 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

Journeyman

2,892 satisfied customers

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

Jeremy

Jeremy

Certified Truck/Bus Technician

2,243 satisfied customers

ASE Med/HD Truck Technician, NATEF Diesel Engines and Electrical/Electronics Technician, EPA 608/609 HVAC Certified, Steering/Suspension and ABS/Brakes Technician

cumminsdr

cumminsdr

Mechanic

1,351 satisfied customers

All types of Cummins applications

Curtis B.

Curtis B.

Technician

991 satisfied customers

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

dieseldan55

dieseldan55

Contractor

74 satisfied customers

Road Service mechanic for Volvo Construction.

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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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