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Have a spn 656 cm 0 fault code. c7 runs rough. kal61102.

Have a spn 656...

Have a spn 656 cm 0 fault code. c7 runs rough. kal61102

Mechanic's Assistant: What is the complete model and serial number of your machine?

Kal61102 c7

Mechanic's Assistant: Are you fixing this yourself? What have you tried so far?

Yes. just starting to investigate the problem

Mechanic's Assistant: Anything else you want the equipment mechanic to know before I connect you?

Don't think so

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Answered in 59 minutes by:
5/17/2017
Technician: Cat Man, Cat Engine Expert replied 5 years ago
Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 10,344
Experience: I am ASE Master Truck Certified.
Verified
Thanks for asking your question. I will try and help you out.
Code 656 is an injector code fault for number 6 injector. But it's not for a KAL C7. It's for an emission C7 with a DPF.
What did you read the code with?
Ask Your Own Medium and Heavy Trucks Question
Customer reply replied 5 years ago
The c7 is in an RV on a freightliner chassis. There is a engine diagnostic read out on the dash. Read the code there.
Technician: Cat Man, Cat Engine Expert replied 5 years ago
I see. Thanks for the information.
You most likely have a faulty injector or a problem in the wiring harness that connects to the injector.
Someone with Cat ET software can run a solenoid test and verify if it's the injector or the harness.Please reply back if you need more help or have more questions. I am happy to assist.
Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 10,344
Experience: I am ASE Master Truck Certified.
Verified
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