Fixing Stuck Injection Pump - Yanmar 3 Cylinder Diesel - 3TN82E
Stanwood Studios Stanwood Studios
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 Published On Jun 8, 2022

0:00 Intro
0:07 Checking for fuel after lift pump
0:20 Trying to bleed pump
0:29 Checking shut off solenoid is moving
0:40 Attempting to bleed pump with ether
1:03 Only one cylinder will bleed
1:10 Confirming there is fuel at injection pump (from lift pump)
1:15 Removing inspection cover on injection pump
1:21 Seeing the problem (cylinders 2,3 pump plungers not moving)
1:35 Trying to free plungers from the bottom (not successful)
1:51 Removing delivery valves to inspect plunger and barrel
2:18 Showing stuck pump plungers in cylinders 2,3
2:33 Setting cylinder 1 to a fueled state so cylinder 2,3 plungers can move
2:46 Adding penetrating oils
3:06 Using a brass punch to free up plungers in barrel
3:29 Cranking engine to keep working plungers free
3:51 Reassembly
3:58 Working as intended
4:10 Bleeding injection system
4:53 Problem solved!!!

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