I'm late to this discussion, sorry. If you have an electric fuel pump it should be connected before the racor. Suck directly from the tank and as close to the tank as possible, discharge into the racor. This eliminates the chance of a vacuum leak in the racor or anywhere else downstream of the pump since down stream is pressurized.
Our era of boats were typically equipped with 200FG model racors. Glass/plastic or metal bowl for diesel. Metal bowl only for gasoline. I found venting to be a PIA. I've shared this before but here is a video that includes a mod for easier venting. This mod requires drilling and tapping the racor head. https://youtu.be/H-GI38vE4hQ Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On Thu, Sep 23, 2021, 10:14 David Knecht via CnC-List <cnc-list@cnc-list.com> wrote: > Sorry if the start of the thread was lost somewhere. Quick summary: The > problem was the engine twice ran for some time and then died and would not > start. When I checked the Racor later, it was half full of fuel so > diagnosis was either electric fuel pump not working, plugged pickup tube or > vacuum leak somewhere so it could not pull fuel from tank. I have been > chasing those down and now confident the pump and pickup are working, and > vacuum leak is either in fuel line or Racor holder. That is why I decided > to replace fuel lines when several listers suggested that as most likely > culprit (from past experience with the same problem). Dave > > S/V Aries > 1990 C&C 34+ > New London, CT > > > On Sep 23, 2021, at 10:02 AM, Chris Riedinger via CnC-List < > cnc-list@cnc-list.com> wrote: > > Also wondering if 'dont understand' goes a little deeper here > > > Do you mean the mechanical pump on your block or? > > Why are you chasing a fuel pump issue? Do you have a no-start? A boat > dying after a certain amount of time? Etc etc > > On Wed, Sep 22, 2021, 10:19 AM Dave S via CnC-List <cnc-list@cnc-list.com> > wrote: > >> If there’s only one terminal on the pump itself then the metal chassis >> must be the ground. >> >> If you are referring to a schematic the ground wire may not be >> illustrated. >> >> Dave >> >> Sent from my iPhone >> >> > On Sep 22, 2021, at 10:16 AM, David Knecht via CnC-List < >> cnc-list@cnc-list.com> wrote: >> > >> > I am trying to diagnose fuel issue. I dont understand pump wiring. >> There appears to be only one wire to pump. Where is it grounded? >> > >> > Sent from my iPhone >> > Thanks to all of the subscribers that contributed to the list to help >> with the costs involved. If you want to show your support to the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> Thanks - Stu >> Thanks to all of the subscribers that contributed to the list to help >> with the costs involved. If you want to show your support to the list - >> use PayPal to send contribution -- https://www.paypal.me/stumurray >> Thanks - Stu > > Thanks to all of the subscribers that contributed to the list to help with > the costs involved. If you want to show your support to the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray Thanks > - Stu > > > Thanks to all of the subscribers that contributed to the list to help with > the costs involved. If you want to show your support to the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray Thanks > - Stu
Thanks to all of the subscribers that contributed to the list to help with the costs involved. If you want to show your support to the list - use PayPal to send contribution -- https://www.paypal.me/stumurray Thanks - Stu
