Springs are rated by their pressure for a given amount of compression. The GM regulator only adjust about 3/8". If compressed too far the spring will get coil bind and the pressure will spike to the full pump pressure.
DELUXE GM Throttle Body TBI Fuel Injector Rebuild Kit O-rings Gaskets Diaphragm
GM THROTTLE BODY TBI TWIN INJECTOR POD REPAIR REBUILD KIT INCLUDES GASKET SEALS
OEM GM Throttle Body TBI 1992-95 Chevrolet GMC S10 VAN 4.3L 17093047-46 17093121
1987-1996 GM Throttle Body TBI Fuel Injector V8 5.7L 5235206 OEM
GM Throttle Body (TBI) Regulator Spring (Performance) 15-20psi
GM THROTTLE BODY TBI TWIN INJECTOR POD REPAIR REBUILD KIT WITH GASKETS
