Folks, Could someone look at the picture I shared. Below the rectangle part (POSA throttle body) is a circular item (that I think is a mechanical pump. This circular item connects the throttle body to the gasculator.
That is my problem. Is anyone familiar with the part? Is it a mechanical pump ... thanks On Sat, May 13, 2023 at 6:25 PM Michael Quinn <mqui...@hotmail.com> wrote: > That looks like a pulse pump - not a mechanical pump. It does not want > constant vacuum- but pulse vacuum to make a pumping action (regulated by > two valves on the intake and exit side of the pump). > > If you “t” the exit side of the pump, you should get 3-6 psi of fuel… > > M. > > Get Outlook for iOS <https://aka.ms/o0ukef> > ------------------------------ > *From:* KRnet <krnet-boun...@list.krnet.org> on behalf of dee david via > KRnet <krnet@list.krnet.org> > *Sent:* Saturday, May 13, 2023 5:40:25 PM > *To:* KRnet <krnet@list.krnet.org> > *Cc:* dee david <deesa...@gmail.com> > *Subject:* Re: KRnet> Need help starting my KR2 ..please > > Luis, > I want to thank you for your help. It is mainly because of you that I got > this far. > Dee > > On Sat, May 13, 2023, 12:23 PM Luis Claudio via KRnet < > krnet@list.krnet.org> wrote: > > Dee: > > There is no fundamental difference between your setup and mine other than > the brands of injectors. > Here is a video of Rex Taylor explaining the ins and outs of the Posa > Injector and how to best start these engines... > > Posa Carburetor Tuning - YouTube > <https://www.youtube.com/watch?v=AOV1_6P17rc&t=4352s> > > Posa Carburetor Tuning > > <https://www.youtube.com/watch?v=AOV1_6P17rc&t=4352s> > > Luis > On Friday, May 12, 2023 at 09:14:21 PM CDT, dee david via KRnet < > krnet@list.krnet.org> wrote: > > > okay, this is were I am. > > Let me state some facts first > 1. Fuel is supplied to the engine by means of a POSA throttle body.. > 2. Yes, the pump plunger is plumber correctly. - just old. > > 3. Got the pump plunger to work properly so that it dumps fuel into the > cylinder. > 5. Fuel is in the gascolator as stated before (quick drain). > 6. Fuel is not getting into the throttle body. > > 7. Got the engine to come to life for a few seconds by pumping starter > fluid into the manifold and > pumping fuel thru the primer port. > > > I've attached a picture of my POSA throttle body. Please look at the item > below it... I presume this > is a mechanical pump (not sure) fuel goes in from the gascolator and exits > to the throttle body. > > No fuel is coming out of it! > > FYI question - what pressure is expected for the fuel entering the POSA > throttle body? Is a pump required > or the suction vacuum enough to draw the fuel into the throttle body? > > [image: IMG_20230512_173750.jpg] > > On Fri, May 12, 2023 at 2:27 PM Flesner via KRnet <krnet@list.krnet.org> > wrote: > > On 5/12/2023 9:57 AM, dee david via KRnet wrote: > > > > 2. Why is the pressure not forcing the fuel to the primer > > plunger? Laws of physics say it should be there.. right? > > > > Any comments will be appreciated > > > > +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ > > Is the primer plumbed correctly, i.e., when you pull out on the primer > does it fill with fuel? Cut the system in half to troubleshoot. It has > to get fuel before it can dispense fuel. It sounds like you expect fuel > to be at the primer inlet from gravity when you pull out the plunger. > Remove that connection and verify. If not, work backwards. That system > is a basic system like a series circuit in electronics. If it is not > working at some point work backwards till you find where it is working > then identify and fix the problem. > > This is all a "guess" on my part. > > Larry Flesner > > -- > KRnet mailing list > KRnet@list.krnet.org > https://list.krnet.org/mailman/listinfo/krnet > > -- > KRnet mailing list > KRnet@list.krnet.org > https://list.krnet.org/mailman/listinfo/krnet > -- > KRnet mailing list > KRnet@list.krnet.org > https://list.krnet.org/mailman/listinfo/krnet > >
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