[Public-List] A4 Engine puzzler

Sun Aug 18 18:53:05 PDT 2013

last thing to try is to connect tank 2 directly too the fuel intake line behind the selector but prior to the filter. Also how old is the gas and alcohol free or not. The latter is not relevant till you bypass the selector...by the simplest means possible.

ch

Gordon Laco <mainstay at csolve.net> wrote:
>I forgot to mention... It does have an air vent.  To check if that was
>the
>issue I opened tank 2's filler cap and tried it that way... The engine
>still
>conked out after several minutes.
>
>Fuel comes through the selector valve - but perhaps not enough?
>
>
>On 18/08/13 5:37 PM, "Chris H" <chris.herrnberger at gmail.com> wrote:
>
>> 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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