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go-west..
go-west.., Technician
Category: Medium and Heavy Trucks
Satisfied Customers: 1232
Experience:  Technican with 20 years experience focused on engines and electrical.
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Bad fuel mileage on n14 Cummings new air and fuel filter

Customer Question

Bad fuel mileage on n14 Cummings new air and fuel filter
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  go-west.. replied 1 year ago.
Good morning
What are you getting for fuel mileage right now?How does it run?Are there any check engine lights?
Customer: replied 1 year ago.
5.4 to 5.6 mpg runs good pulls strong no cel
Expert:  go-west.. replied 1 year ago.
Sorry for the delay
I've heard of this on occasion but when the injectors start to wear the orifices on the injector tips start to get bigger thus more fuel is burnt. But who wants to buy new injectors if she's running good
So the only suggestions I have is keep it under 55 mph and shift sooner to keep the rpms down
Let me know how if you have any other questions
Customer: replied 1 year ago.
Can I tell if I pull the injector out
Expert:  go-west.. replied 1 year ago.
No we are talking thousands of an inch
Seems small but makes a difference
Customer: replied 1 year ago.
Ok
Expert:  go-west.. replied 1 year ago.
Let me know if you have any other questions