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I have a 1997 freightliner classic with a detroit 12.7.
I have a 1997 freightliner classic with a detroit 12.7. While looking in the fuel tank I am seeing air bubbles in it. Not many and the it seems to be .ore noticeable at 1500 rpm. What should I look fo… read more
Mike
Mike
Triage Tech/Shop Foreman
Associates
214 satisfied customers
1997 freightliner classic. I've had to replace my 12.7
1997 freightliner classic. I've had to replace my 12.7 detroit engine in my truck. I found a good rebuilt one at a used truck parts place. This new engine has a one piece valve cover with 4 bolts alon… read more
Mike
Mike
Triage Tech/Shop Foreman
Associates
214 satisfied customers
I have a 1997 freightliner classic with a detroit 12.7. I
I have a 1997 freightliner classic with a detroit 12.7. I pulled over the other night and a hose leaking water at one end. I cut the hose end a re attached. I could not get a hold of enough coolant to… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,693 satisfied customers
I have a '98 Freightliner Century with a 12.7 liter 60
I have a '98 Freightliner Century with a 12.7 liter 60 series Detroit. I have just recently completed (my first ever) inframe on this engine. After a short test run, I discovered an oil leak that requ… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
9,773 satisfied customers
I have a '98 Freightliner Century with a detroit 60 series
I have a '98 Freightliner Century with a detroit 60 series 12.7 liter. I have just completed an inframe on the engine. The engine purred like a kitten at first startup. A short test run revealed some … read more
Mike
Mike
Triage Tech/Shop Foreman
Associates
214 satisfied customers
1997 freightliner classic with a detroit 12.7 I am getting
1997 freightliner classic with a detroit 12.7 I am getting abs code 2-8-1 need help fixing what is wrong?… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
9,773 satisfied customers
I had a guy install the dash parking/trailer brake control
I had a guy install the dash parking/trailer brake control valve in my 97 Freightliner fld 120 and I have air coming out my blue line without the the brakes being engaged im thinking that it was cross… read more
Mike
Mike
Triage Tech/Shop Foreman
Associates
214 satisfied customers
I HAVE A DETROIT 60 SERIES 12.7 ENGINE SER# 06R0487966 WE
I HAVE A DETROIT 60 SERIES 12.7 ENGINE SER# ***** WE DID IN FRAME ABOUT A MOUTH AGO IT RAN GOOD TILL KNOW CAME BACK AT HIGH RPM STARTS TO MISS FIRE AND BLOW WHITE SMOKE … read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,693 satisfied customers
I have a 1997 freightliner classic with a detroit 12.7. Why
I have a 1997 freightliner classic with a detroit 12.7. Why does the brake valve leak air whem I release trailer brakes?… read more
Mike
Mike
Triage Tech/Shop Foreman
Associates
214 satisfied customers
1997 freightliner classic with a detroit 12.7. The brake air
1997 freightliner classic with a detroit 12.7. The brake air compressor has am oil leak from by where the fuel pump and compressor join.is there a gasket there and can it be replaced?… read more
Mike
Mike
Triage Tech/Shop Foreman
Associates
214 satisfied customers
1997 freightliner classic. When botbtailing and braking i
1997 freightliner classic. When botbtailing and braking i have an air leak at rhe blue hose that connexts to the trailer can someone help me fix the problen?… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,693 satisfied customers
1997 Freightliner classic with Detroit 12.7 I have smoke out
1997 Freightliner classic with Detroit 12.7 I have white smoke out the exhaust. When I cut out injector 2 the smoke goes away. Can anyone one tell me what to look into? I recently did an over head cou… read more
Roy
Roy
shop foreman
Associate Degree
5,413 satisfied customers
I have a 1997 freightliner classic with a detroit 12.7 the
I have a 1997 freightliner classic with a detroit 12.7 the rurbo is leaking oil. It seems to be coming from somewhere on the inlet side. It only seems to be doing it when loaded. This is a new turbo. … read more
Roy
Roy
shop foreman
Associate Degree
5,413 satisfied customers
Broke down. 12.7 detriot broke exhaust valve spring on cylinder
broke down. 12.7 detriot broke exhaust valve spring on cylinder one but valve did not fall into cylinder. i just need spring replace. Can i run the ruck with injector disonected ?… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,114 satisfied customers
I have a freightliner with Detroit 60, 12.7, and it seems the
I have a freightliner with Detroit 60, 12.7, and it seems the misfiring and a lot of smoke at low rpm (between 15 and 35 rpm) would not stop after I changed the fuel pump. Right after I changed the pu… read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
9,773 satisfied customers
I have a 2000 freightliner classic xl needs a motor has a Detroit
I have a 2000 freightliner classic xl needs a motor has a Detroit 12.7 can I put in a qsm 11 (rtch) rt240 sn(NNN) NNN-NNNNand what all wouldhave to be replaced?… read more
Wayne
Wayne
Journeyman
Vocational, Technical or Trade Scho
3,693 satisfied customers
My freightliner classic with detroit 60 in it, wont go more
My freightliner classic with detroit 60 in it, wont go more than 55 mph fuel filters have been changed, turbo seems fine, no error codes, no smoke, all fluids are good.… read more
Andy
Andy
truck /coach technician
Vocational, Technical or Trade School
204 satisfied customers
I have a 04 Columbia with a Mercedes. I have a 12.7 Detroit
I have a 04 Columbia with a Mercedes. I have a 12.7 Detroit I want to put in it. what and were do I get wiring harness and other parts that I need… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
5,114 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

9,773 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

5,114 satisfied customers

I am ASE Master Truck Certified.

Wayne

Wayne

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3,693 satisfied customers

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

Jeremy

Jeremy

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

cumminsdr

cumminsdr

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All types of Cummins applications

Curtis B.

Curtis B.

Technician

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

Chris (aka-Moose)

Chris (aka-Moose)

Technician

262 satisfied customers

16 years of experience

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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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