Robt, my n/a 223 has a fuel increase screw at the back end of it, along with turning the pump for timing. Although I am not certain exactly how this increases fuel, I know that turning it does make a difference. So now I'm curious: does the turbo 223 NOT have this screw?


PS: This is the same screw my 3 diesel Jettas had, probably because the pumps were very similar.

1994 Chev S10 Ext.Cab with C223 5spd
1991 S10 Sonoma Ext.Cab with C223 5spd - SOLD

Kubota B6100 diesel with accessories