Q: Vortec 4300 L35 injection system

[Never Hood]

Hello, I have weared myself out browsing sites, looking for electrical scemes or something related to the injection system of Vortec 4300 V6 L35 (Chevrolet Astro).

Finally I've found your forum :tup: my question is:

There seem to be only one injection nozle there, why 4 wires? Can anybody explain how many injectors are there, and which wires are used.

Or maybe someone can help with a good link? Or mail some info?

Thank you /

 

[vortecfiero]

Re: Q: Vortec 4300 L35 injection system

Hello, I have weared myself out browsing sites, looking for electrical scemes or something related to the injection system of Vortec 4300 V6 L35 (Chevrolet Astro).

Finally I've found your forum

my question is:

There seem to be only one injection nozle there, why 4 wires? Can anybody explain how many injectors are there, and which wires are used.

Or maybe someone can help with a good link? Or mail some info?

Thank you /

one big injector fireing into a sealed cup with 6 little fuel lines running to 6 little valves set at about 30 psi.. the system pressure is 50psi + so when it fires it opens the 6 little 30 psi valves.
running into the manifold are
fuel feed
fuel return
blue wire for injector from the ecm
red wire from 12v

if you have a CPI engine.. there is a plenum tuning solinoid on top of the intake
blue wire to ecm
red wire from 12v

cpi engine