| Fuel filters - before of after electric pump? [message #80544] |
Wed, 14 April 2010 13:08  |
Mike O'Connell
Messages: 53
Registered: November 2008
Location: Deerfield MA
Karma:
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There seems to be diverging opinions as to where one should install a fuel filter when using an electric pump by the tanks.
I see that most here and on the photo site put the filter before the pump, yet most advice online elsewhere would put it after the pump.
The reason for after seems to be that fuel pumps (especially electric) are more affected by restriction on the suction side than the pressure side. The thinking seems to be that additional negative pressure on the suction side could cause a cavitation problem, which is what the whole electric fuel pump implementation is supposed to be solving. Additionally if the electric pump buys the farm particles would be trapped by the filter.
Is this reasoning sound or are there factors with the GMC that I'm overlooking here?
Mike O'Connell
Deerfield, MA
'75 Eleganza
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