DIY_EFI Digest V2 #326

[Orin Eman]

> > I've seen a number of K-jet installations where the cold-start injector
> > has been disconnected to stop fuel dribble from it.  Does the control
> > box not turn it off properly?
> > - -- 
> > Chris Morriss
> > 
> > 	Don't know? It seems to work just fine now.
> > 		BRAAP

> There is no computer in a K-jet car.. except the box which converts
> oxygen-sensor voltage to duty cycle for a single "injector" which
> regulates control pressure in the fuel distributor, which operates
> hydro-mechanically. The cold-start injector is triggered by the wire
> leading to the starter solenoid. the cold-start injector's negative side
> is connected not to ground but to the Thermal Time switch, which screws
> into the coolant jacket and provides a ground only below operating
> temperature. A heating coil causes it to "give up" if the cold start
> injector is activated for longer than ten seconds to prevent flooding, if
> the starter is cranked for too long.

Not necessarily true.  80's Audi turbo cars are K-jet and they control
the cold-start injector from same computer that controls the
frequency valve for mixture etc...

The cold-start valve is however, well known for leaking, however
it is activated!

Orin.