Re: Hot Start Problem

[Night Shadow <soltwede@privateI.com>]

More likely than not it is your fuel pressure regulator that is getting
heat soaked.

Eric


On Sat, 8 Sep 2001, Brian Haygood wrote:

>  I searched the archives, and I'm wondering whether a hot start relay will
> help this problem.  It's an '87 16v.  I've followed Bentley's checks for the
> cold start injector and rest position of the air flow plate.  Once started
> the car always runs well and strongly.
> 
>  My car's ability to start varies with temperature.  On colder days (70's or
> so) it fires on the first turn or two.  When it's around the mid 80's it
> takes a several turns for a cold engine to fire.  If I drive the car around
> a while (up to operating temps) on a warm day, and try to restart it within
> about 5 minutes, it will start very reluctantly.  If I let it heat soak for
> 30 minutes or so, it will turn over forever and never fire, though
> occaisionally it will sputter on the first crank or two.
> 
>  I have tried push starting it twice and both times it started right up,
> though the cranking speed of the engine seems pretty good, and I can crank
> it for quite a while (10 seconds) without it slowing down.
> 
>  So it sounds to me like something in their doesn't like being heat soaked.
> The archives mention that putting a hot start relay in the ignition
> somewhere fixes a heat soak problem, but it sounded to me like this was a
> fix for cars that refused to turn over.  Mine turns over pretty well in any
> condition.
> 
>  I don't believe this is a fuel accumulator problem because it relates more
> strongly to temperature than to time.  If the car is allowed to cool it
> starts well.  I have not checked the screw on the back of the accumulator
> for leaks, yet.
> 
>  If anyone can verify that I need a hot start relay, could you also tell me
> where to get the relay, where it wires in, etc.  Also, would this same
> problem disappear if I just replaced some wiring and didn't put in a relay?
>  Thanks for your help, listers.
> 
>  Sincerely;
>  Brian Haygood
> 
> 
> 
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--
Eric
Westminster, CO

76 Honda CB400F Super Sport
79 Scirocco (Parts car)
80 Scirocco (Parts car)
81 Scirocco S (2.0 16v swap and complete restoration in progress)
84 Scirocco Automatic (Katy's Daily Driver)
91 Cabriolet (2.0 8v swap and mechanical rebuild in progress)
00 Golf GL TDI (My Daily Driver)

"For Aquarians, the physics of loopholes is a perfectly valid science."
-Kelli Fox


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