Re: problem with car ignition(urgent expert advice req)

"Bruce L. Bergman" <blPYTHONbergman@earthlink.invalid> wrote in message
news:br4d1153es7ubvgjda8ovfesbd1rd5llvf@4ax.com...[color=blue]
> On Fri, 18 Feb 2005 15:56:47 -0600, "Ray O"
> <rokigawa@tristarassociatesDOTcom> wrote:
>[color=green]
>>Long, long, time ago, waaaay back in the olden days, cars could get vapor
>>lock, and women used to get the "vapors," whatever that is. Nowadays,
>>cars
>>don't get vapor lock and women don't seem to get the "vapors" any more.[/color]
>
> Okay, if you're SO sure that cars don't vaporlock anymore since they
> went to fuel injection, then why does my 88 FJ-62 Cruiser have a
> thermostatically controlled "Bilge Blower" fan on the left fender
> blowing cool air on the intake manifold and fuel rail after a hot
> shutdown? If there wasn't a problem they wouldn't need to solve it.
>
> You don't suppose that they went through all the added expense to
> install those fans and ducts at the factory (costing at least $50,000
> in engineering time and tooling, and probably $20 per car for parts)
> because they found the cars had a tendency to vaporlock, do you?
> Would they spend the money if they didn't?
>
> With a high-pressure EFI pusher fuel pump inside the tank, and a
> return line from the engine fuel rail back to the tank, the fuel
> system should bleed itself and self-purge the vaporized gasoline in a
> few seconds, causing a noticeable hesitation in starting - but it was
> still vaporlocked un till it purged the vaporized gasoline back to the
> tank.
>
> Not like the bad old carburetor days where a vaporlock meant you
> weren't going anywhere soon - it would vaporlock on the suction side
> ahead of the mechanical fuel pump on the engine block, and it would
> take forever to get it to purge and prime again. Been there, Dealt
> with that...
>[/color]
Bruce,

We're kinda splitting hairs. I didn't mean that fuel will not vaporize, I
meant that the condition where an engine will not run due to fuel
starvation, caused by vaporized fuel somewhere in the fuel delivery system,
is a thing of the past. When I said that modern cars don't get vapor lock
any more, I meant because the folks who design the cars have figured out
various ways to keep the fuel flowing, like the fan in your Crusher. Even
in normally hot and sunny California, I'll bet your Crusher never had a
no-start due to vapor lock.

Ray O
correct the return address punctuation to reply