Big, Big Time Poster
540 fuel filter
Does it have 2 of them? If so, Why? Thanks
95 540 six speed, Rondell 58 wheels, nothin else special
79 911 SC - pea soup green
Big, Big Time Poster
Depends on build-date
Early 540s (and 530s) have a dual-filter setup. I had the dual-filter setup on my 3/93-build 530iT, then switched to the single-filter from the later models. The single-filter is the same diameter as each of the dual-filters, but is twice as long. I installed the single-filter in the lower of the two slots on the stock filter-holder.
Drew Zacharda
6-speed Touring
Originally Posted by scott540
Drew Z
Formerly 540iT/6, now . . . 3, 5, 7
Big, Big Time Poster
Mine's a 2/95 build date and there are 2 cans under there. I was just wondering why they used 2 instead of like you said, one big one. Probably so I can buy two filters instead of one.
95 540 six speed, Rondell 58 wheels, nothin else special
79 911 SC - pea soup green
Major Contributor
if you look closer.....
you will see that the filters are installed parallel, not inline. this way there is less restriction for fuel flow. it's like having a dual exhaust for the fuel system. a single filter might cause the fuel pump to work harder. the 540i/a fuel pump feeds 50psi to the fuel rail. i have 2 & my build date is 4/94. 2 new filters are not really all that expensive.
tim s.
My 05/95 production date car has one filter.
Cheers,
David
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