Re: Peculiar starting problem

["Mark Madison" <markie@proaxis.com>]

Well, I studied Vapor Lock a little bit before buying the latest "project"
in my possession and I find it hard to believe that this car would have
vapor lock.
in fact I find it hard to believe ANY watercooled VW would have vapor lock..
not saying it isn't just saying its extremeley unlikely.. especially in this
season.. WINTER.

vapor lock usually occurs when the fuel "vaporizes" and the pump can't pump
it.
but since the pump is under the car and in the gas tank...  which is also
cooled by
a neverending circulation of fuel.. its very very hard to imagine vapor
lock.

I would guess his cold start valve might be flooding his motor.  Works great
at
startup.. but perhaps his "fifth" injector might be on ALL the time and
causing
him to flood a little at startup at warm engine temps.??  dunno *shrug*

could be just about anything.. but dunno. just my guess.

mark madison



----- Original Message -----
From: 16V JASON <jason@scirocco.org>
To: Michael Helms <tudor@tvo.org>; <VWofT@onelist.com>;
<scirocco-l@scirocco.org>
Sent: Wednesday, February 17, 1999 12:17 PM
Subject: Re: Peculiar starting problem


>Michael,
> That sounds just like Vapor Lock-- and it's usually caused by a bad Fuel
>Pressure Accumulator.  What happens when the accumulator goes is that the
>fuel pressure in the lines drops within a couple minutes of the car being
>turned off.  Then, the fuel in the line (which is hot by the engine
>compartment) evaporates and creates vapor lock, a situation where the fuel
>cannot be pumped effectively through the system.  Once the engine cools
>down completely, the fuel re-condenses and all is well.
> This happened on an Audi that I had for a while-- it would absolutely not
>start unless it was started within about  5 mins of being used, or more
>than 3 hours.
>
> GL
> Jason
>
>
>
>At 02:36 PM 2/17/99 , Michael Helms wrote:
>>Hi guys and gals,
>>
>>Small problem with my '86 that has me stumped.
>>
>>If the car is stone cold (ie. it has been sitting all night), the car
>>starts right up on the first kick.  But, if the engine is warm, it
>>gets tougher and tougher to start.  Now, if the engine is hot and you
>>shut it off for a minute, it's fine to re-start ... but if you leave
>>it for 10 or 20 minutes, you have to turn it over much more to get it
>>going again.
>>
>>It's almost as if the engine should be getting an extra shot of fuel
>>that it isn't when it's warm.  What could be wrong?
>>
>>Thanks,
>>-- Michael Helms
>>
>>'81 Scirocco - the fixer-upper
>>'86 Scirocco - the daily driver
>>
>>Web Site:  http://www.continuum.org/helms
>>
>>"If you don't believe your country should come before yourself, you
>>can better serve your country by living somewhere else."  - Dr.
>>Stompin' Tom Connors
>>
>>
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>
>
>----------
>jason@scirocco.org
>1987 Scirocco 16v
>57,000 original miles.
>http://members.aol.com/rocco16v
>
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>
>


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