Quote:
Originally Posted by Rooster300SD
So, what is the PSI of the lift pump? 15psi?
I want to match my aux pump psi to the lift pump.
The aux fuel pump I'm using now is only 6-9 psi.
Thanks,
Jeff
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If he had the Factory manual they might give a pressure.
On the Fuel Injection Pumps that have a Lift Pump with no Hand Primer the Fuel Pressure Relief/Overflow Valve is set up so that some Fuel always bleeds through an orifice and is supposed to take the Air with it through the orifice.
That would mean that part of the pressure is also bleeding off.
So with his particular Fuel System the amount of Flow may be more important the pressure.
If his Lift Pump is no good an Electric Fuel Pump ought to at least get him started. After that it is a matter of test driving to fine out if there is a loss of performance.
In theory an Electric Fuel Pump with a max pressure of 7 pounds is not supposed to be enough pressure for my 617.952. But, in that Benzworld thread I think that is what he used is Electric Pump on.
In a previous post I posted a thread were some one rebuilt their newer style Lift Pump. I believe he said the kit was around $40-$49. But, to get out the Oulet Valve you need to at least partially grind off the Crimp that holds it in.