Tips on curing vapor lock?

[Livolsi, Stephane]

I had the same problem, very hard hot starting, even with all afterrun
systems working properly.

I installed a momentary contact push button switch in the dash, wired to the
grounding wire on the cold start valve.  Now, if I do have a problem
starting the car when hot, I press the switch while cranking which gets some
fuel into the engine and it fires, which must lift the fuel meter plate and
help clear the lines, because it will keep running.

The downside, is that, the way I have it hooked up, I have to use my manual
switch for cold starting too.  This isn't such a big deal to me, and I view
it as a sort of antitheft device - auto theft is a major problem here.

Stephane

> ----------
> From: 	scott thomas[SMTP:scott at dreamtheater.zzn.com]
> Sent: 	February 12, 2003 6:26 AM
> To: 	quattro at audifans.com
> Subject: 	Tips on curing vapor lock?
>
> I've tried a bunch of things to relieve my vapor lock and it's still
> bad. I keep fumbling with the residual pressure valve, but the fact
> of vapor lock still remains. In city driving, it's very noticeable,
> but mostly after sitting for 1/2 hour. I have to use "special"
> starting procedure to get the car running and purge the fuel ines
> with cooler fuel.
>
> I have my injector cooling fan running. I do use a lower temp switch
> mounted elsewhere. Afterrun works. The rubber boot for the hoses is
> there. I wrapped it with foil tape. It helped some, but not that
> much. Anyone been here before and what did you do? I'm going to try
> and shim the lines from the intake manifold with some silicone
> strips to see what happens. I can raise the residual pressure, but
> that'll leave me with harder starting, but the + is that it'll start
> every time.
>
> Any ideas?
>
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