Re: No spark 4ktq project

[ti@amb.org (Ti Kan)]

Todd Phenneger writes:
> 	1) Fuel.  I have fuel, but I have to much.  when I turn key to ON
> position, FP jsut stays on.  I'm suspecting a Bad Check Valve or something
> leaking pressure off.  This with the assumption that the FP turns off when
> a certain FP is reached.  I guess that pressure is not being reached.  

Sounds like either a bad (sticking) fuel pump relay or faulty wiring
in the related ircuit.  The FP relay may click on momentarily to
activate the fuel pump when you turn the key to "on" (to pressurize the
system), but won't stay on unless it is getting ignition pulse
signals from the ignition coil (early non turbo cars) or the ECU,
which signifies that the engine is actually running.

It has nothing to do with fuel pressures.  The fuel pump always
delivers too much fuel by design, and the fuel distributor has a
pressure regulator that feeds excess fuel back to the tank via
a return line.

-Ti
96 A4 2.8 quattro
84 5000S 2.1 turbo
80 4000 2.0
-- 
    ///  Ti Kan                Vorsprung durch Technik
   ///   AMB Research Laboratories, Sunnyvale, CA. USA
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 //////  http://metalab.unc.edu/tkan/
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