Injectors & harness

[Shannen Durphey]

Dave Williams wrote:
> 
> -> Ok.  Then the 4.3W and the Syclone don't share injectors.  The W
> -> engine has one injector connected to 6 poppet nozzles, each through a
> -> hose.  Looks a little like a deformed spider.
> 
>  "Poppet nozzles"?  Is there some sort of breakover valve involved?  If
> so, how do they keep all the gas from going through the first poppet to
> unseat?
> 
>  That's why the Bosch K-Jet has a separate fuel pressure regulator for
> each injector.
> 
55 psi opens the valve in the nozzles.  The injector "connects" the
poppets to the feed line, and fuel pump pressure opens the valves. 
Pressure is regulated after the injector to max of 65psi (IIRC).
These systems are pretty particular about minimum pressure
requirements.  If pressure doesn't rise above 53psi, you've almost
always got a no-start.
Hope the description works.  Think of the plumbing like a single
injector TBI system, with the injector at regulated pressure.  The
poppets, connected to the injector, require a minimum pressure to
open.  Injector opens, pressure opens poppet valves, fuel's squirted.

Shannen