: -------------- The Facet pump in this position is a two edged sword. It can help eliminate a vapor lock when on but it is a restriction that can create a vapor lock when off. A properly laid out fuel system should not require another pump to prime the main EFI pump. It is a bandaid IMO. Again, any restriction other than a strainer to stop the 'big chunks' before the EFI pumps is not a good thing. Tracy --NextPart_Webmail_9m3u9jl4l_20927_1108622192_0 Content-Type: text/html Content-Transfer-Encoding: 8bit

Paul,

I have forgotton your exact fuel system layout.......Do your efi pumps push

fuel from sump tank to fuel valve then to engine or are they installed after the

fuel valve and suck fuel from all the way back to the sump tank ? I tend to

agree with Tracy and others that the Facet boost pump is a restriction.....Have

you tried removing it and heating the engine as in previous tests to see if

you get a vapor lock ?

--
Kelly Troyer
Dyke Delta/13B/RD1C/EC2

-------------- Original message from "Tracy Crook" <lors01@msn.com>: --------------

The Facet pump in this position is a two edged sword. It can help eliminate a vapor lock when on but it is a restriction that can create a vapor lock when off. A properly laid out fuel system should not require another pump to prime the main EFI pump. It is a bandaid IMO. Again, any restriction other than a strainer to stop the 'big chunks' before the EFI pumps is not a good thing.

Tracy

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