2012 prostar with maxxforce 13 losing power
Discussion in 'International Forum' started by Eddozer, Dec 17, 2019.
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hello I’m have same similar problem with my 2015 pro start international with a Cummins
I have to check lights
Can this be the answer to my problems -
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Hi. Your high pressure fuel pump has plungers sticking open. I’ve had luck changing the plungers, but I don’t think you can buy them from International parts. I ended up buying a used pump and changing them on the truck. most likely a new high pressure pump is the repair.
Heavyd Thanks this. -
Like mentioned, it looks like the high pressure pump is worn out. Good pressure cold, but when hot it is leaking internally due to worn parts. Shutting it down only even briefly allows it cool enough to make pressure again until it gets hot again.
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