Paccar truck fuel filter issues - LRM

LRM assesses a Paccar semi truck that was told an engine replacement was needed due to fuel filter issues. Steve shows you how to properly assess the truck to determine if an engine replacement is actually needed or if there is other underlying fuel filter issues that can be fixed at a lesser cost.
Steve shows you how to check the fuel filter, seal, valves, hand pump, and more!
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[@kb3809]

Wish we had a website that puts these shops on blast. Good catch and thanks for the info🤙

[@AndreaPena-tr1nj]

My truck is having a air in fuel so I can't move it. I have checked all possible trouble shooting areas and yes I changed my filter. There is bubbles in the dome where you can see the fuel. I was told it is the una pump if I can't find the fuel line cracked to fuel tank. Can you show me how you solved that semi that I have the same problem.

[@HectorGarcia-rr7lu]

I’m having the same issue but mine was not after a filter change it shut off on me and I have to prime it by hand each time I want to get it started and it only lasts a short while. I tested the unit pumps by unplugging them each while the truck is running and the truck stays on so that means it can’t be the unit pump?

[@GarySingh-y2v]

we have truck with mx13 keep giving problem with fuel restrict filter. keep getting same problem from 7 months it is new truck 111k miles .We went to different dealership spent about 18k on it they always clean fuel tanks and change fuel filter,sensor,def filters. still not found problem

[@sultanminhas]

Same problem sir no idea what to do hows ur truck now or how u fix this and hepl plz

[@chfaisal4631]

One of my friend have a issue and to be honest the issue was fuel breathers so when he changed full tank breathers after that no issue

[@Caristud]

I have same issue I will tried replacing ,fuel tank breather.

[@walt404]

It's called unit pump ,they look like injectors, there are two of them on the driver side

[@Riighthandtrucking]

Awesome Thank u guys

[@miltonramirez2088]

Semple think can be

[@hamrazyahya]

Thank you u doing great

[@calsmith7902]

SHOW US THIS UNI-PUMP ??? .... SHOW US THE RUST ON THE UNI-PUMP???? Do you do more than just talk 👄 ???

[@pedal2dametal686]

We want to the rust and the so called plugged port! And if there is rust would the rust not travel to the other unit pump?, plus what caused that rust? Never thought that rust would eventually travel to the injectors also???