| Re: Fuel pump in but no pumpy [message #362873 is a reply to message #362865] |
Tue, 16 March 2021 15:42   |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
Karma:
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up until I installed the EFI a couple years ago, I installed a $50 cube pump on my coach back in 2010 when I first bought it. was a "jim bounds" install as that is where I seen it done. just plumbed into the aux feed before the selector valve and powered off the selector valve wire. Switch to Aux at dash just before starting coach and you could hear the pump. set the choke and the engine would fire on crank almost immediatly. Then switch back to "main" on dash and drive. few times on hot days when in traffic you could get the chug of vapor lock and a quick switch of the tank switch and boom- power and drive away.
I have been around coaches that sit, have no electric fuel pump, and crank till the battery cables melt, or battery dies and no start. Hook up an aux fuel source up and get the engine running. then switch back to the tanks, and it usually will run. last one just a year ago, the coach was parked nose up, and it would not suck any fuel. got the coach on level ground and hooked up an electric pump to the fuel tank hoses. quickly had fuel coming out of the tanks, hooked the fuel line back to the mechnical pump and that coach drove home.
that mechnical pump is just what it is. you have to get those hoses primed somehow. Electric pump is easiest.
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
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