fuel tank vent hose on 1988 240 injection..??

Discussion in 'Volvo 240' started by TWC, Jul 26, 2003.

  1. TWC

    TWC Guest

    On my 88 240 injection ,I find the gas in the fuel tank will evapourate
    slowly , means the fuel gauage will drop slowly even the car didn't
    move.
    I find this venting connection  on the  fuel tank   :
    1- a rubber hose runs from the fuel tank neck , the other end  goes out
    to the car. (free to atmosphere) , I'm wondering this will make the gas
    evapourate.?
    2-On the sending unit , there are 3 metal pipe opening , two are for
    fuelling , the 3rd is blocked by a rubber cap. 

    Is this venting system normal ?

    Thanks.
     
    TWC, Jul 26, 2003
    #1
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  2. TWC

    Mike F Guest

    The hose at the filler neck should connect to the hose on the top of the
    tank (there are various valves etc. to stop fuel leaking out in a
    rollover) and then these should be connected to a vapour storage
    canister up under one of the front fenders. There then should be hoses
    connected to this that are used to draw these vapours into the intake
    manifold when the engine is running. This system is quite complicated,
    and you should look at another car as an example to get yours fixed.
     
    Mike F, Jul 28, 2003
    #2
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