RE: [alfa] Spider fuel filter and related problems

["John S." <roadtrip999@xxxxxxxxxxx>]

Colin  You should always check the fuel low pressure warning light 
operation when you initially turn the key to "on."  Check that it 
momentarily comes on, then goes out as the pressure builds up. You're low 
pressure problem might be due to a clogged rear filter or it may not. It 
could be a weak or failing fuel supply pump. If your fuel pump is a 3-port 
original, it's way past its useful life. Failing fuel supply pumps often 
exhibit erratic operation, failing, then working ok for a while, and so on. 
If it were my car and the original fuel supply pump was still in it, I'd 
change it at the hint of trouble, or at least carry a new one in the trunk 
so I could change it on the road if needed.  Finally the low pressure light 
will come on more and more often. Finally, the fuel pump might blow a fuse 
and quit altogether. If it blows a fuse, that's it. It's done for. Don't try 
and power it up again.

Your mechanic should be diagnosing the low pressure light for you. If it 
turns out to be just a fuel filter, fine. But he should also check for 
sediment/rust in the fuel tank (depending on what he finds in the rear fuel 
filter, and the electrical connections at the fuel supply pump.

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