Mf 255 loses power shuts off suddenly

Anonymous-0

Well-known Member
Mf 255 Perkins diesel. Runs fine for a bit, suddenly loses power shuts off. Runs for a bit again, repeats.
-plenty of fuel
- replaced fuel filter, issue continues
- air filters ok

Please help, need this tractor to finish hay
 
If filter is Wix or NAPA make sure there is no O ring in the top outer filter groove, or the inlet will be blocked or shut off completely. If that is OK check the constant bleed oriface fitting on top of the filter base, if plugged air cannot get out of the filter and will get into the pump, causing shutdown. Make sure the tank is vented correctly too, no fuel out if air cannot get in.
 
I would also add check screen in the lift pump if it has one, not familiar with the 200 series, also the flow out of the tank. Good luck, Tom.
 
I worked on one a while back with the same complaint ,and it was a bad injection pump. Had the pump rebuilt and it ran like new.
 
Bleak system, ran well as before then quit.
Going to replace pump, finger that rides against shaft is worn- neighbor had me check flow from tank > pump. Then manual prime/pump; then crank motor over= way less output of pump...? Hope this fixes.

Thanks all!
 

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