Posted by Dieseltech on September 09, 2020 at 08:26:06 from (64.184.64.61):
In Reply to: John Deere 4010 diesel posted by Al Nickel on September 09, 2020 at 05:42:01:
Might be the injection pump needs repair too. Have you noticed any slight up/down speed change without moving the hand throttle? That could be fuel supply trouble as mentioned, or governor issues. Also be aware there are several diesel engines with Stanadyne/Roosa pumps that work fine without a supply pump feeding the filters/injection pump. If engine acts up, loosen the two screw timing cover on the pump side. If engine then runs OK WITH the fuel leak, but slows/dies with cover tight it's confirmed injection pump needs repair and return line back to fuel tank cleaned.
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