The reason the lever on the priming pump is more (or less) effective is that as the engine crank position changes the cam that drives the lift pump arm changes too. If the engine happens to be at the peak of the lobe then the lift pump arm will be fully actuated and the manual flipper will be completely unfunctional.
Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Sun, Aug 6, 2017, 5:26 PM svpegasus38 via CnC-List <cnc-list@cnc-list.com> wrote: > Thanks Dav, I'll go ask if he has this lever. Is the screw on the injector > pump under a tall hex head cap? The screw there was loose so he tightened > it. > > > > Sent from my T-Mobile 4G LTE Device > Doug Mountjoy > POYC > Pegasus (for sale) > Lf38 > Rebecca Leah > LF39 > > -------- Original message -------- > From: David Knecht via CnC-List <cnc-list@cnc-list.com> > Date: 8/6/17 14:07 (GMT-08:00) > To: CnC CnC discussion list <cnc-list@cnc-list.com> > Cc: David Knecht <davidakne...@gmail.com> > Subject: Re: Stus-List 3gm fuel issues > > Hi doug- It has been a while, but I think I remember that problem. On my > old boat’s 3GM the lift pump on the side of the engine was challenging. > There was a screw on top to loosen and a small lever oriented vertically > that manually pumped it. The hard part was that you had to really pull > hard on the lever to actually pump fuel and eventually, pumping would get > fuel out of the loose screw. The first few times I did it, I moved it up > and down and nothing happened until I gave it more force on the upswing. > Once you have fuel there, you can bleed at the injectors. That should be > as simple as pulling the release levers and cranking the engine. I rarely > had to actually loosen the injectors themselves. Dave > > On Aug 6, 2017, at 4:01 PM, svpegasus38 via CnC-List < > cnc-list@cnc-list.com> wrote: > > A friend in the club has a LF38 with a 3gm yanmar. Ran it out of fuel, now > can't get it bled. We have fuel to the last chance fuel filter, but I can't > find the bleed screw on the injector pump. Have tried to bleed the injector > lines at the injectors to no avail. > Anybody familiar with this we would love to hear. > Thanks in advance. > > > > Sent from my T-Mobile 4G LTE Device > Doug Mountjoy > POYC > Pegasus > Lf38 > Rebecca Leah > LF39 > _______________________________________________ > > This list is supported by the generous donations of our members. If you > wish to make a contribution to offset our costs, please go to: > https://www.paypal.me/stumurray > > All Contributions are greatly appreciated! > > > Dr. David Knecht > Professor of Molecular and Cell Biology > University of Connecticut > 91 N. Eagleville Rd. > Storrs, CT 06269-3125 > 860-486-2200 > > _______________________________________________ > > This list is supported by the generous donations of our members. If you > wish to make a contribution to offset our costs, please go to: > https://www.paypal.me/stumurray > > All Contributions are greatly appreciated! >
_______________________________________________ This list is supported by the generous donations of our members. If you wish to make a contribution to offset our costs, please go to: https://www.paypal.me/stumurray All Contributions are greatly appreciated!
