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Cat Man
Cat Man, Cat Engine Expert
Category: Medium and Heavy Trucks
Satisfied Customers: 8343
Experience:  I am ASE Master Truck Certified.
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Cat man,rob here at cbc truck repair.we have a cat c7 that

Customer Question

cat man,rob here at Customer.we have a cat c7 that has been a real pistol.eng s/n#sap92474 i am getting a fuel knock that comes and go`s my question is i am not getting any/very little fuel returning from injector return at back of the head.any direction why would help,cant seem to ge a strait answer
JA: Thanks. Can you give me any more details about your issue?
Customer: do you really want to know what i have tried i could write a book!
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Submitted: 6 months ago.
Category: Medium and Heavy Trucks
Expert:  Cat Man replied 6 months ago.
Thanks for asking your question. I will try and help you out.
Does the check engine light come on when this happens? Or are there any codes?
Has the fuel pressure been checked while the knock is happening?
What parts have been replaced so far?

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