[Public-List] A4 Engine puzzler

[Jason S]

Check vent on tank 2, maybe vent on tank is clogged.
On Aug 18, 2013 1:29 PM, "Gordon Laco" <mainstay at csolve.net> wrote:

> Hi Gang,
>
> I hope you¹re all out sailing.... I stole Friday afternoon and yesterday to
> do a quick overnighter up the coast.  Had a wonderful trip.
>
> This afternoon I¹ve been making a determined assault on the annoying issue
> SURPRISE¹s engine has;  namely it¹s dislike of running while the fuel
> selector is set to Tank 2.
>
> It runs fine on Tank 1, but when the selector is set to 2 it runs for only
> a
> few minutes then cuts out and won¹t restart.   When I put the selector back
> to Tank 1, it starts again after a lot of cranking...but at first only with
> the choke on (it gets over that quickly).
>
> When it stalls while running on tank 2, here¹s fuel in the fuel filter, so
> I
> think it¹s getting gas.   If the carb were getting blocked, it wouldn¹t
> start again on either tank without a carb cleaning job, but it doesn¹t need
> that.
>
> When the problem first manifested, it was stalling on either tank, but
> after
> I¹d followed Don Moyer¹s advice and retightened all fuel line hose clamps,
> the problem was resolved with regard to 1, but the issue still exists with
> 2.
>
> It¹s occurred to me that there could be water in the fuel in 2; so I¹ve
> been
> putting fuel line antifreeze in to absorb it.... But it occurs to me that
> if
> contaminated fuel were the issue, I¹d have to clean the carb before it
> would
> run again and so long as I switch to 2 that doesn¹t happen.
>
> The weird thing is it ran quite happily on either for many years before
> this
> started happening last season.
>
> Does anyone have any suggestions?
>
> Gord #426 Surprise
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