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John Deere 8.1 fuel issue

Tiki98

New Member
Joined
Apr 27, 2024
Messages
3
Location
Florida
Goodmorning,
I have a John Deere 8.1 ESN: RG6081H265308 on a SDMO 230kw generator that it's been giving me trouble.
The unit starts and runs but after 15 minutes it starts to loose power and has a knock on the engine(most likely a fuel knock) only when starts to lose power and shuts down. After it cools down it starts and runs but its the same issue. They have replaced the High Pressure pump and still does the same thing. I have seen the injector harness leaks oil.
Any ideas what it may be?
Thanks in advance.
 

mg2361

Senior Member
Joined
Jul 5, 2016
Messages
5,390
Location
Pennsylvania
Occupation
Equipment Mechanic
When checking for codes on that unit, are you just looking to see if codes just "popped" up, or did you search for a code through the menu structure?

The fuel pressure seems fine until the knocking comes up.
Seems? Or has this been confirmed with a gauge?

When the issue starts, did you loosen the fuel cap to see if that resolves the issue?
 

Tiki98

New Member
Joined
Apr 27, 2024
Messages
3
Location
Florida
There is no codes. Connected diesel laptop to check the fuel pressures. Will check the cap.
 
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