halleyholmes
Recruit
- Joined
- Sep 29, 2022
- Messages
- 2
Hi all, new diesel owner here. I replaced the fuel filters on my Yanmar 3YM30 yesterday but when it came time to bleed air from the system, the lift pump wasn't drawing fuel from the tank into the CAV primary filter (I did doublecheck that I'd opened the line from the tank). I understand that using the lift pump is a slow process but after several minutes of pumping, I took the filter off and it was still bone dry. I did open the bleed screw over the secondary filter and the pump was pushing air out of there, so the pump itself doesn't seem to be the issue. It seems like it isn't getting suction due to a bad seal somewhere, but other than the bleed screws themselves I can't imagine where it could be occurring, especially since I'd replaced two missing O-rings when I took the original filter off (the one that sits between the filter and the head and the one that fits onto the central spindle that the filter fits around).
Does anyone have any suggestions? Youtube has been of no help.
Does anyone have any suggestions? Youtube has been of no help.