Re: Stus-List Yanmar 2GMF20F fuel seepage at high pressure pump?
Update - a straightforward (though awkward) replacement of two rubber o-rings eliminated the seepage. Will post pics to blog shortly. Thanks! Dave Sent from my iPhone > On Jul 29, 2019, at 1:28 PM, Dave S wrote: > > Thanks Josh - I did try tightening and no joy. Did a little more research > and have ordered the o ring (likely a crush washer) that seals the seat, will > then dis and reassemble. > > And yes, very tight area in which to work... > Dave > > Sent from my iPhone > >> On Jul 28, 2019, at 5:17 PM, Josh Muckley wrote: >> >> Dave, >> First of all this location looks challenging at best. The problem with >> these fittings is that there are 2 stacked in series. The lower one holds >> the pump pistons and spring in place. It is sealed with a copper washer and >> the tiniest movement in the counter clockwise direction will allow fuel to >> leak out the threads. This will usually occur unwittingly while trying to >> loosen the top fitting. It is hard to know which fitting is leaking. The >> top fitting can simply be tightened but if the bottom is loose then the two >> of them turn together, often times twisting the fuel pipe. The best way is >> to hold the bottom while loosening the top. This allows you to then tighten >> the bottom fitting without twisting the fuel line. Once tight go ahead and >> retighten the top fitting. There is probably a torque spec which I might be >> able to find for you. >> >> The saving grace in your case is that it is not the inside port (#2). That >> one usually requires you to remove the first (#1) so that you can access it >> properly. >> >> I can probably find pictures and torque specs if you need them. Just let me >> know. >> >> Josh Muckley >> S/V Sea Hawk >> 1989 C&C 37+ >> 1989 Yanmar 3HM35F >> Solomons, MD >> >> >> >> >>> On Sun, Jul 28, 2019, 3:09 PM Dave S via CnC-List >>> wrote: >>> >>> Used ye olde baby powder trick and can see that the leak is at the base of >>> the forward high pressure outlet. >>> >>> Would appreciate any thoughts on cause and remedy. Thanks! >>> >>> Posted a pic. >>> >>> Greetings all. >>> This is getting harder to ignore >>> windstar’s engine is seeping in the area of the high pressure fuel pump. >>> Diesel collects around the serial number shown in the photo (link below) >>> and slowly migrates down the starboard side of the engine. >>> >>> https://cncwindstar.blogspot.com/2019/07/yanmar-2gm20f-fuel-seepage.html?m=1 >>> >>> Any suggestions as to source and remedy? >>> >>> Many thanks! >>> >>> Dave Syer >>> VP Westburne Canada >>> >>> >>> Sent from my iPhone >>> ___ >>> >>> Thanks everyone for supporting this list with your contributions. Each and >>> every one is greatly appreciated. If you want to support the list - use >>> PayPal to send contribution -- https://www.paypal.me/stumurray >>> ___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
Re: Stus-List Yanmar 2GMF20F fuel seepage at high pressure pump?
Thanks Josh - I did try tightening and no joy. Did a little more research and have ordered the o ring (likely a crush washer) that seals the seat, will then dis and reassemble. And yes, very tight area in which to work... Dave Sent from my iPhone > On Jul 28, 2019, at 5:17 PM, Josh Muckley wrote: > > Dave, > First of all this location looks challenging at best. The problem with these > fittings is that there are 2 stacked in series. The lower one holds the pump > pistons and spring in place. It is sealed with a copper washer and the > tiniest movement in the counter clockwise direction will allow fuel to leak > out the threads. This will usually occur unwittingly while trying to loosen > the top fitting. It is hard to know which fitting is leaking. The top > fitting can simply be tightened but if the bottom is loose then the two of > them turn together, often times twisting the fuel pipe. The best way is to > hold the bottom while loosening the top. This allows you to then tighten the > bottom fitting without twisting the fuel line. Once tight go ahead and > retighten the top fitting. There is probably a torque spec which I might be > able to find for you. > > The saving grace in your case is that it is not the inside port (#2). That > one usually requires you to remove the first (#1) so that you can access it > properly. > > I can probably find pictures and torque specs if you need them. Just let me > know. > > Josh Muckley > S/V Sea Hawk > 1989 C&C 37+ > 1989 Yanmar 3HM35F > Solomons, MD > > > > >> On Sun, Jul 28, 2019, 3:09 PM Dave S via CnC-List >> wrote: >> >> Used ye olde baby powder trick and can see that the leak is at the base of >> the forward high pressure outlet. >> >> Would appreciate any thoughts on cause and remedy. Thanks! >> >> Posted a pic. >> >> Greetings all. >> This is getting harder to ignore >> windstar’s engine is seeping in the area of the high pressure fuel pump. >> Diesel collects around the serial number shown in the photo (link below) and >> slowly migrates down the starboard side of the engine. >> >> https://cncwindstar.blogspot.com/2019/07/yanmar-2gm20f-fuel-seepage.html?m=1 >> >> Any suggestions as to source and remedy? >> >> Many thanks! >> >> Dave Syer >> VP Westburne Canada >> >> >> Sent from my iPhone >> ___ >> >> Thanks everyone for supporting this list with your contributions. Each and >> every one is greatly appreciated. If you want to support the list - use >> PayPal to send contribution -- https://www.paypal.me/stumurray >> ___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
Re: Stus-List Yanmar 2GMF20F fuel seepage at high pressure pump?
Dave, First of all this location looks challenging at best. The problem with these fittings is that there are 2 stacked in series. The lower one holds the pump pistons and spring in place. It is sealed with a copper washer and the tiniest movement in the counter clockwise direction will allow fuel to leak out the threads. This will usually occur unwittingly while trying to loosen the top fitting. It is hard to know which fitting is leaking. The top fitting can simply be tightened but if the bottom is loose then the two of them turn together, often times twisting the fuel pipe. The best way is to hold the bottom while loosening the top. This allows you to then tighten the bottom fitting without twisting the fuel line. Once tight go ahead and retighten the top fitting. There is probably a torque spec which I might be able to find for you. The saving grace in your case is that it is not the inside port (#2). That one usually requires you to remove the first (#1) so that you can access it properly. I can probably find pictures and torque specs if you need them. Just let me know. Josh Muckley S/V Sea Hawk 1989 C&C 37+ 1989 Yanmar 3HM35F Solomons, MD On Sun, Jul 28, 2019, 3:09 PM Dave S via CnC-List wrote: > > Used ye olde baby powder trick and can see that the leak is at the base of > the forward high pressure outlet. > > Would appreciate any thoughts on cause and remedy. Thanks! > > Posted a pic. > > Greetings all. > This is getting harder to ignore > windstar’s engine is seeping in the area of the high pressure fuel pump. > Diesel collects around the serial number shown in the photo (link below) > and slowly migrates down the starboard side of the engine. > > > https://cncwindstar.blogspot.com/2019/07/yanmar-2gm20f-fuel-seepage.html?m=1 > > Any suggestions as to source and remedy? > > Many thanks! > > Dave Syer > VP Westburne Canada > > > Sent from my iPhone > ___ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > > ___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
Re: Stus-List Yanmar 2GMF20F fuel seepage at high pressure pump?
Used ye olde baby powder trick and can see that the leak is at the base of the forward high pressure outlet. Would appreciate any thoughts on cause and remedy. Thanks! Posted a pic. Greetings all. This is getting harder to ignore windstar’s engine is seeping in the area of the high pressure fuel pump. Diesel collects around the serial number shown in the photo (link below) and slowly migrates down the starboard side of the engine. https://cncwindstar.blogspot.com/2019/07/yanmar-2gm20f-fuel-seepage.html?m=1 Any suggestions as to source and remedy? Many thanks! Dave Syer VP Westburne Canada Sent from my iPhone___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
Re: Stus-List Yanmar 2GMF20F fuel seepage at high pressure pump?
Used ye olde baby powder trick and can see that the leak is at the base of the forward high pressure outlet. Would appreciate any thoughts on cause and remedy. Thanks! Posted a pic. Greetings all. This is getting harder to ignore windstar’s engine is seeping in the area of the high pressure fuel pump. Diesel collects around the serial number shown in the photo (link below) and slowly migrates down the starboard side of the engine. https://cncwindstar.blogspot.com/2019/07/yanmar-2gm20f-fuel-seepage.html?m=1 Any suggestions as to source and remedy? Many thanks! Dave Syer VP Westburne Canada Sent from my iPhone___ Thanks everyone for supporting this list with your contributions. Each and every one is greatly appreciated. If you want to support the list - use PayPal to send contribution -- https://www.paypal.me/stumurray
