Hi all, new member here from NC, been reading for a few years, especially the LSX board but just now registered. Have an S10 thats bugging the heck out of me because I cant get it to run. bought it a few weeks ago for my step son to drive this winter since its a 4x4. truck has been sitting a couple years not running when I got it. I was pretty sure it was the distributor cap so I change that and the rotor out but still no start so I'm digging in. If left alone "not cranked" overnight the truck will start and run for a couple seconds and quit like it out of fuel
Heres a list of things I have done.
-new cap and rotor
-new plugs and wires
-checked fuel pressure with key on pump running: 62 psi
-fuel pressure with key on and pump stopped: 58 psi
-leaks down to 52-54 after 5 minutes
-compression test: cyl #1, 2, 3, 6 @ 140-150 psi, cyl # 4 & 5 @ 90 psi.
-rolled engine up to TDC and pulled the distributor cap to check for rotor position: pointing directly at the # 1 terminal
-pulled the ignition control module and coil and tried it on another truck: runs fine.
-checked each cylinder for spark with a calibrated ignition tester: spark was good
-poured fuel in the throttle body with air flow sensor unplugged: no start
-sprayed ether in TB with air flow sensor unplugged: no start
-unhooked the coil, pulled the FI harness and checked each terminal with noid light: each terminal flashed as engine turned.
-left FI harness unplugged, plugged ignition back up and truck started 3-4 times and ran 4 or 5 seconds at the longest on one attempt.
-pulled the upper intake, unhooked coil, reconnected the fuel lines, pulled each poppet valve and cranked the engine over: each poppet valve sprayed fuel well
-truck shows 40 psi oil pressure while cranking
-no security light flashing
-no obd codes stored
scratching my head now, looking for some suggestions