Alfa Romeo Bulletin Board & Forums - View Single Post - Liquid evaporator plumbing
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post #4 of (permalink) Old 07-30-2019, 01:34 AM
spiderserie4
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Join Date: Jul 2011
Location: Cologne, Germany
Posts: 7,214
sounds like your 'new' tank lost the vent nipple on the filler neck?

the vapour tank has 3 nipples, one at top and 2 at bottom.
top: this one has the little vent valve and goes to that hard line running along the cylinder head - that looks correct on your set up.
middle: this goes to the filler neck (on yours it goes to the tank)
bottom: goes back to tank (on yours capped off)

see post #3 here for original set up:
https://www.alfabb.com/bb/forums/spi...apor-line.html

diagram is useful too (not spider, OK, but same thing!):
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Dom - Alfa Spider 1990 S4 - formerly: Alfa 101 Sprint, 2600 Sprint, Montreal - family classics: Jensen Interceptor II, '58 Hooper RR Silver Cloud I, Shadow II, '60 Corvette.
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