Join Date: Jul 2007
Location: Northern Virginia
Thanked 6 Times in 6 Posts
Rep Power: 8
Oh No! New Owner with another Diesel Bleeding/Fuel Question
Sorry Folks. But I've looked through past posts and I still have a question. Just got a Pearson 28-2 with a 2GM20F Yanmar. Boat had been neglected last few years, so today I replaced engine fuel filter assembly (owner had stripped out the bleed screw). Filled the bowl with diesel while putting it on. Replaced all the crush washers on the engine filter. Bled the line at the filter, using the built in lever, then ran the engine for a bit to see that all was well.
Then I put a new cartridge in the Racor 210 (I think thats the model). Put the new gaskets on the bottom and top of the Racor cartridge. Filled the Racor with diesel as best I could, and tried to keep the fuel in there as I screwed that blasted big center screw into it while laying across the drive shaft area. Bled at the engine filter bleeder until solid fuel came out. Ran the engine for 5 minutes so I could change the oil.
After the oil change, I started the engine again, but it ran for 20 or 30 seconds and then started stuttering badly, so I killed it. Figured I had more air in there. At the engine filter bleed screw, I pumped (again using the little lift pump lever) for an hour and saw plenty of air jiggling the bleed screw but little fuel.
Where is all this air coming from? Do you think I've got a leak back at the Racor? Maybe the two O-rings on the center screw need to be replaced? Is the plastic screw on the side of the Racor a bleed screw? Do I need to bleed there?
Going back for round 2 tomorrow, so hoping to hear from someone telling me what idiotic thing I've done or forgotten to do.