If you remove your fuel hose from the injector holder housing and turn the key on you should have a blast of high pressure raw fuel come out for about 2 seconds then it stops. VERY IMPORTANT!!!! DO NOT POINT THE HOSE ANYWHERE IN YOUR DIRECTION!!! ALWAYS POINT AWAY FROM YOURSELF!! Your L01 unit is a fairly older machine therefore I would check the wiring on the relay box under the LH step panel for corroded wiring under the box itself. A common issue. Next I would check for spark by pulling a coil and plug. If there isn't any fire I would check the ign. capacitor on the wiring harness inside the tunnel located behind the same relay box mentioned earlier, Between the frame and the engine. It should be chocolate brown in color, newer ones were yellow. Wiring on this plug also corrodes, You could also have MAF, crankshaft, or cam sensor issues. No codes on dash???? Or the MIL light on?? You said you changed out the valve assy. I assume that was the inj holder housing. They plug up with tar from the fuel. Check all fuses and relays. Another issue the L-series had was internal connections inside the bottom of the fuse box. Usually when this happens the fuel lockoff solenoid will not click open. Hope something here might help you. I'll keep an eye on your posts. Good Luck!! One more question, will it try to fire with a shot of ether???