Inside the engine, on the nose of the crankshaft, under the timing chain.
With fuel pump running, 60 to 66 psi if it is a 4.3L engine or 41 to 47 psi if it is a 2.2L engine.
The 2.2L engine, 41 to 47 psi. The 4.3L engine, 60 to 66 psi.
Pump running, engine off, 41 to 47 psi.
41 to 47 psi, pump running, engine off.
4.3L engine, 60 to 66 psi. 2.2L engine, 41 to 47 psi.
41 to 47 psi, pump running, engine off.
41 to 47 psi, pump running, engine off.
41-47 psi, engine off, fuel pump running.
The 4.3L engine requires 60 to 66 psi. The 2.2L engine requires 41 ti 47 psi.
With the key on pump pressure should be 40 - 47 psi. This is with the engine not running.
2.2L engine, 41 to 47 psi. 4.3L engine, 60 to 66 psi. This is with the fuel pump running, engine off.
91 S10 4.3 L engine requires 41 to 47 psi fuel pressure.