[alfa] Fwd: fuel vapour smells 164

[C M Smith <cmsmith@xxxxxxxxxxxxxxx>]

> Date: Tue, 02 Sep 2003 20:08:52 -0600
> To: "Mark Pavich" <pavichm@domain.elided>
> From: C M Smith <cmsmith@domain.elided>
> Subject: fuel vapour smells 164
>
> Ah Mark, how does my 164 leak fuel, let me count the ways....
>
> Unbelievably bad for a modern car. However, if you have rounded up the 
> usual suspects and plugged 'em, try removing the trunk floor and part of 
> the rear trunk liner and look at the screw heads on the fuel sender access 
> plate. Some of us have found the fuel seeps up the threads of the machine 
> screws that hold this down. My mechanic didn't believe me until  I 
> persisted and he then found the seepage and carefully sealed each one with 
> an "o" ring under the screw head!
>
> Be aware that this seepage is often intermittent and requires diligence 
> and persistence to trace. A full tank helps.
>
> Symptoms are fuel vapour smell with a window or especially the sunroof 
> open after filling the tank very full. Also, as it gets worse the smell 
> appears with a partially full tank after aggressive cornering, 
> acceleration or braking.
>
> Now there are a legion of other possibilities. The most common are the 
> fuel rail hoses which benefit from double clamping to prevent seepage. the 
> symptom here is raw gas smell on a cold startup which rapidly dissipates. 
> Unrelated to fuel tank level or aggressive driving. Very cold weather 
> makes the symptom worse.
>
> There are two hose connections behind the engine that often leak also.
>
> Check the 164 tech discussions for more possibilities.
>
> Cheers and good luck
Michael Smith
White 1991 164L
Original owner
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