<<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>
         <<  Lancair Builders' Mail List  >>
         <<<<<<<<<<<<<<<<--->>>>>>>>>>>>>>>>

John asks:

<<why do you think my flow
suddenly decreases? I have even tried going to high boost with the mixture
staying rich - didn't help.>>

Sounds like a leak in your fuel pressure reference line or a defective
regulator or servo. I am not familiar with the Continental 550 fuel system
but there should be a reference line that connects the deck pressure to the
fuel pressure regulator. If there is a leak in this line then the regulator
will "think" that the deck pressure is lower than it actually is and reduce
the fuel flow accordingly. This line may be a physical hose or a passage in
the fuel controller.

In any event it sounds like there is a problem with the fuel system that
should be corrected.

Regards
Brent Regan

LML website:   http://www.olsusa.com/Users/Mkaye/maillist.html
LML Builders' Bookstore:   http://www.buildersbooks.com/lancair

Please send your photos and drawings to marvkaye@olsusa.com.