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We have a 7500 engine c7 it started yesterday kept losing
we have a 7500 engine c7 it started yesterday kept losing power we changed fuel finter this am started up ran fine driver took off came back missing now it just turns over wont start … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
Picked up a GMC 7500 with a C7 CAT VIN# KAL77538, they did
picked up a GMC 7500 with a C7 CAT VIN# ***** they did one piston and liner, re ringed the other 5 and put used injectors in... truck smokes whitish grey, smells like diesel to the point it burns your… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,548 satisfied customers
I have a 2007 Cat C7 acert and I'm wondering if it has a
Hi, I have a 2007 Cat C7 acert and I'm wondering if it has a fuel transfer pump in the tank or somewhere else.… read more
Curtis B.
Curtis B.
Technician
Associate Degree
991 satisfied customers
Cat man ...i have an 07 freightliner m2 with a cat c7
hey cat man ...i have an 07 freightliner m2 with a cat c7 accert...445k on motor...this morning i had a major leak on the left side rear of engine...oil was coming from some where on top and leaking w… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,548 satisfied customers
I have a 2007 M2 with a Cat C7 ser# WAX56746 with 286000
I have a 2007 M2 with a Cat C7 ser# ***** with 286000 miles. It is using 1qt of oil every 100 miles and the fuel in the fuel filter I replaced is dark with oil. The local Cat shop performed a diagnost… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,548 satisfied customers
Second opinion] I have a 05 gmc C6500 with a C7 motor, Dual
Second opinion] I have a 05 gmc C6500 with a C7 motor … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,548 satisfied customers
I have a 05 gmc C6500 with a C7 motor, Dual tanks, C6500, My
I also have a code that reads engine#1 transmission splitter position currently below normal or open What does it mean and how to fix it… read more
Jeremy
Jeremy
Certified Truck/Bus Technician
Associate Degree
2,243 satisfied customers
Caterpillar C7 ACERT in a 2005 Freightliner M2. Engine was
Caterpillar C7 ACERT in a 2005 Freightliner M2. Engine was using oil and low on power. Owner wanted new engine. Removed engine and installed reman long block. Had to transfer oil pan and main oil pump… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,548 satisfied customers
C7 use to hold 37.5 psi but just recently dropped to 25 psi.
C7 use to hold 37.5 psi but just recently dropped to 25 psi. Just replaced barrings and still only holding 26-27psi at operating temp... … read more
Daniel Wilson
Daniel Wilson
Auto Mechanics 1&2/diesel mech
2,803 satisfied customers
I have a cat c7 freightliner truck,the problem is, the
hello I have a cat c7 freightliner truck,the problem is, the engine began to pass the oil tank of diesel,the mechanic said it was the injectors so were sent to repair,after repairing the injectors, th… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,548 satisfied customers
Recently replaced HUIE pump and 2005 Cat C7 now we are
Recently replaced HUIE pump and 2005 Cat C7 now we are getting fuel in the radiator, can it be coming from the HUIE pump??… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,548 satisfied customers
Cat man need to bounces some things off you I have a c9
hi cat man need to bounces some things off you I have a c9 engine industrial in a machine. I thought I had lick just had low fuel pressure code of 94-17 when I was cranking on ET had like 5 psi change… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,548 satisfied customers
I've got injectors leaking, won't build up gh pressure. Have
I've got injectors leaking, won't build up high pressure. Have replaced sensor, valve, and huei pump, replaced all 6 injectors, and now # ***** is leaking oil again and won't start. No pressure.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,548 satisfied customers
I have a c7 that will not start, has a new fuel pressure
I have a c7 that will not start, has a new fuel pressure regulator and fuel pump as we were getting a low fuel pressure code. Has no codes now.… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,548 satisfied customers
I have a cat c7 2003 with 235,000 Miles.it uses a gallon of
I have a cat c7 2003 with 235,000 Miles.it uses a gallon of oil about every 300 miles all of the oil is going into the fuel system.the shop wants to replace all 6 injectors.the truck builds air in the… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,548 satisfied customers
i have a c7 in a gmc steak truck uses oil done cyl cut out
i have a c7 in a gmc steak truck uses oil done cyl cut out test and injector cut out test all passed doesn't smoke runs great but uses oil no leaks anywhere… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,548 satisfied customers
i have a cat c7 engine in a gmc dump truck orignal concern
i have a cat c7 engine in a gmc dump truck orignal concern was fuel in the coolant i replaced injector cups as well as all injector and orings had pcm programmed truck runs great but now has lare oil … read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,548 satisfied customers
C7 Cat getting fuel in oil. Already have resealed injectors...30
C7 Cat getting fuel in oil. Already have resealed injectors...30 day ago huei pump and transfer pump were replaced. no fuel coming from transfer pump. Good flow from pressure relief valve to fuel tank… read more
Cat Man
Cat Man
Cat Engine Expert
Vocational, Technical or Trade Scho
9,548 satisfied customers
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Meet the Experts:

Daniel Wilson

Daniel Wilson

2,803 satisfied customers

Owner at DJ Wilson

Cat Man

Cat Man

Cat Engine Expert

9,548 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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