Secondaries not functioning

[Paul Workman]

AND....Im sure you realize by now that it will run on secondaries FULL TIME. Many of us run on FULL ENGINE POWER, 100% of the time (above 1(?)% throttle input, IIRC). If you can pardon an old shade tree mechanics logic: "Parts that don't exist don't break, and they don't cost much!"

[Dynomite]

One of the reasons I have a ZR-1/LT5 is the LT5. An amazing engine which I found out once you treat it with a bit of respect in a restoration/maintenance it never quits (runs forever)

I replaced the complete secondary vacuum system on the LT5s for less than $100 (all those old rubber connectors are usually the issue as well as those old original injectors).

Lets not forget the old Fuel Pressure Regulators also replaced by Phil's new Fuel Pressure Regulator that can be changed out after initial installation without removing the Plenum (the original Fuel Pressure Regulators usually are a bit rusty inside)

I would never eliminate a functional Secondary Fueling System which is the most unique features of an LT5 (The Full Power Key and all that Dual Fueling associated with the Full Power Key).

[TexasZR1]

Tightened everything up, new solenoid installed (in old frame), new gaskets, topped off coolant, runs like a dream! In my case, someone had already put stiffeners in the accordian.