Re: Probs with fuel pump & RPM relay

[DMCVegas@xxxx]

When the fuel pump is off, there are a series of check valves and the 
accumulator that maintain fuel pressure within the system. When you 
crank the engine, the distributor moves and the impulse coil inside 
sends a signal out. This immediately trips the fuel pump realy to turn 
the fuel pump on. Since pressure has been maintained within the fuel 
lines, no priming is nessisary.

-Robert
vin 6585



--- In dmcnews@xxxx, at88mph@xxxx wrote:
> Knut and others,
> 
> 
> Thanks for the info, but maybe I'm mistaken in my thinking. I 
understand
> that the white/slate is recieving pulses from the coil with the 
engine
> running but, I thought that when you turned the key to just the 
'run'
> position, (before you turn the key to the start position to engage 
the
> starter) that the fuel pump gets primed for about 2-3 seconds. Am 
I wrong
> on this? If I'm correct in assuming that the fuel pump primes for 
2-3 sec.
> in 'run' then the coil wouldn't be a factor at that point...or would 
it??
> This is where I'm confused :)
> 
> 
> Thanks for the help!,
> 
> Duke
> ----- Original Message -----
> From: <knut.s.grimsrud@xxxx>
> 
> >I don't think it's supposed to turn on
> > first unless presented with an impuse on its sense signal (first
> > spark when cranking).