[Shotimes] Engine Starting Speed

[SHO GOS]

My fuel pump runs longer than 1 second when I turn on my key, more like 3
and it does pressurize the fuel rails. Disconnect your fuel pump, start your
engine and let it burn all of the fuel left in your rail. I'm willing to bet
that there's still pressure and fuel left in your rails. To test this for
yourself, smack that fuel pump cut off switch on your trunk, start your
engine and run it until the engine dies. Now pop your hood, remove the cap
from the shrader valve on your fuel rail and press in the valve and see if
you don't get sprayed by gas.

I've cleaned several SHO fuel rails and injectors and every time I hook up
the hose to the fuel rail shrader valve I have a shop towel on the other end
of the hose so the gas doesn't go all over the engine. After every thing is
hooked up I turn on the key to allow the pump to run so I can dump that
pressure into the cleaner can just in case the can's internal pressure is
low.

----- Original Message -----
From: "Kevin & Cheryl Airth" <clubairth@cajunnet.com>
To: <shotimes@autox.team.net>
Sent: Saturday, December 14, 2002 12:13 PM
Subject: Re: [Shotimes] Engine Starting Speed


> This is common to all EEC-IV vehicles. If the rpm is below 120 rpm the PCM
> will not let the fuel pump run. So that is the lower limit, if the starter
> can not spin the engine at least 120 rpm it will never start. Remember
that
> when you turn the key on it does NOT pressure the fuel system to 39 PSI.
It
> ONLY runs the fuel pump a fixed length of time. Usually 1 second. That's
why
> when your fuel pump is weak you need to cycle the key several times. With
> only running 1 sec. it might take 5-6 cycles to build enough pressure for
> "instant" start.
> .
> .
> .
>
> > I think that "theory" comes from the '92 cars that came with
> > a starter that was slower than normal, the cars were hard to
> > start, and there was a recall, and all SHO's on the lots had
> > to have starters replaced.  Not all of them had problems,
> > but a lot of them did.
> >
> > Other than that, I don't think the SHO has to spin faster
> > than any other four-cam motor, I would guess it maybe needs
> > a bit more speed than a motor designed to run at much lower
> > speeds, like a diesel or a OHC 2-valve torque motor.
> >
> > Don Mallinson
> > SHO Club
> > history, that is our key to understanding!
> >
> > George Fourchy wrote:
> > > On Sat, 14 Dec 2002 10:47:55 -0600, John Weidenbenner wrote:
> > >
> > >
> > >>>The SHO engine needs to be spun faster than most car engines to start
> > >>
> > >>easily.
> > >>
> > >>What is the basis of your comment?
> > >
> > >
> > > You know, I don't know.  Maybe one of the LPM gurus or guys like Gary,
> Sergio or the
> > > Dons who work on them a lot can tell us.  I have heard that they need
to
> be spun
> > > faster since I first got on the list in the early '90s, back in the
days
> of
> > > american.edu.  I know a couple of months ago I tried to push start my
> black car in
> > > 5th gear after a starter failed, and it wouldn't start.  Later, I
tried
> in 3rd, and
> > > it started right up.
> > >
> > > George
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