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Send it to Diesel Fuel Injection Services in Portland, OR to be rebuilt. It’s not unusual for seals to deteriorate in an older pump. Mine developed the same issues you’re describing 15 years ago. DFIS replaced seals and a few worn internal parts. It’s worked perfectly ever since.Im looking for an OEM fuel pump for a 1HDT after mine started leaking diesel and getting air into the engine. Anyone might know where I could find an OEM one? I've looked on EBay but it's all Chinese ones. I'm located in NA, but I'm willing to buy from anywhere. thanks!
After taking apart the pump I noticed that it sadly wasn't a seal, it broke right where the throttle valve opens, I'll attach a picture. Thanks for the help!Send it to Diesel Fuel Injection Services in Portland, OR to be rebuilt. It’s not unusual for seals to deteriorate in an older pump. Mine developed the same issues you’re describing 15 years ago. DFIS replaced seals and a few worn internal parts. It’s worked perfectly ever since.