Kevin 007
Full-floater
Oh good.
Are they fairly reliable? cam gear driven?
Are they fairly reliable? cam gear driven?
I have the Ford write up for the PSD from 94 to 98 in PDF format, but don't know how to get it to you. Anyone know how to do that? Don't recall how I got it.
mechanical, burried deep in the valley
my '95 psd has an electric pump on the drivers side frame rail with fuel lines in and out and a mechanical in the valley. I didn't add an electric and it looks to be stock. wouldn't this be a lift pump?
That's the selector valve, for the dual fuel tank setup. It is not a lift pump. The 94-97 PSD's all have a dual stage fuel pump in the valley. The low pressure side pulls fuel from the tank and pushes it through the filter. From the filter, it goes back through the high pressure part of the pump and to the fuel rails/injectors.
This may be more information than you wanted to know, but here a couple of pictures to help..
The first stage of the fuel pump, is the diaphragm stage. This is what pulls fuel from the tank and pushes it through the filter.. It's the two connections, on the top of the pump.
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The second stage is the piston stage and takes fuel from the filter and pushes it to the fuel rails and injectors.
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Hope this helps..