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Discussion Starter · #1 ·
return line on my CP3 has come off twice in the last 300 km. Curious if there is a cause of this or did the spring clamp just get weak over time and letting it come off? If i put the line back on and pull on it, it doesn't come off by hand

truck runs fine with the line off but sprays diesel everywhere.

Thanks
 

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Can you blow bubbles from there to the tank? Before line came off did you have pressure in tank when removing fuel cap?
 

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It sounds like there is blockage somewhere in the return line that causes a pressure buildup. Should be very easy for fuel to return to the fuel cooler and then into the tank.
 

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Discussion Starter · #4 ·
I found the return line from the cooler to the tank somehow wedged itself between the tank and the tank hanger bracket and was pinched off, I pulled it out and zip tied it out of the way and seems to be good so far.
 
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