[Public-List] A4 Engine puzzler

[Chris H]

Does tank 2 have an air vent?

ch

Gordon Laco <mainstay at csolve.net> wrote:
>I'm just back from another bout....
>
>I put the selector to draw from tank 2, then removed the fuel line at
>the
>engine and blew through it.  I could hear bubbling in the tank.  I
>carefully
>sucked until I had fuel coming out, reconnected the line to the engine.
> The
>engine fired right up, ran for a few minutes then cut out and would not
>restart.
>
>I put the selector back to draw from tank 1.  After some cranking (to
>fill
>the carb I guess) it fired up and ran happily.  I switched the selector
>to
>2, a few minutes later it stalled.
>
>So, it'll run on fuel from tank 2, but wont draw from it.  Tank 2 is a
>pvc
>Tempo tank mounded up on the shelf in the port side cockpit locker.
>
>I wonder if the fuel pump has become so feeble that I won't pull the
>extra
>head?  But is there an extra head once the fuel line is full?  I'd
>think
>that the fuel coming down will sort of siphon the fuel behind it that
>has to
>come up.
>
>I have an electric fuel pump I bought from one of you folks - perhaps I
>should learn how to install it and see if that helps.
>
>G
>
>
>
>On 18/08/13 3:39 PM, "Michael Connolly" <crufone at comcast.net> wrote:
>
>> 
>
>Gord, 
>
>Remove the selector valve and check to be certain that there is full
>> flow in both positions. 
>
>Michael 
>
>
>
>----- Original Message -----
>
>
>From:
>> "Gordon Laco" <mainstay at csolve.net> 
>To: "Alberg 30 Public List -- open to
>> all" <public-list at lists.alberg30.org> 
>Sent: Sunday, August 18, 2013 3:37:47
>> PM 
>Subject: Re: [Public-List] A4 Engine puzzler 
>
>I thought of that... Tank 2
>> is a new PVC tank. 
>
>
>On 18/08/13 2:21 PM, "Glenn" <brooks.glenn at comcast.net>
>> wrote: 
>
>> Sounds like the pickup tube in your second tank has corroded
>> through, causing 
>> a break in the fuel suction. 
>
>Glenn B 
>dolce 318 
>
>Sent
>> from my iPad 
>
>On Aug 
>> 18, 2013, at 10:28 AM, 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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