1992 Ford F-150 truck quit runnig

1992 FORD F-150
350,000 MILES • V8 • 4WD • MANUAL
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TROUBLED TRUCK
ford p/u never let me down then one day it stalled ran ruff i could not keep it runnning. i have good spark and 40 psi at the injector rail.i have replaced ,tps sensor fuel regulator,distributor and pip sensor, icm ,ignition swith truck will run if you put gas down the snorkle.there is power at both terminals of the injectors .if i pull out the fuel relay and let it touch the contacts you can fell the injecters click and the truck started for a few seconds codes 22,21,24,53,54,95 these codes were retrieved after we started it by pouring gas down the snorkle before that only 22and53 were there.any help would be appreicated as ijust dont seem to be getting any closer
Nov 4, 2010 at 10:21 PM
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JACOBANDNICKOLAS
  • ASE Certified Mechanic
  • 110,193 POSTS
  • ASE Certified Mechanic
If you have good spark, fuel pressure, and the injectors are working (have power), you need to check to see if they are getting power when the engine is cranked. If you are getting a pulse, then you either are losing spark or fuel pressure. Have you checked for an injector pulse?
Nov 5, 2010 at 7:57 AM
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DOCFIXIT
  • ASE Certified Mechanic
  • 18,828 POSTS
  • ASE Certified Mechanic
At injectors check voltage at RED wire 12V+?
Put test light on TAN or White wire crank does it flash?
Nov 5, 2010 at 7:57 AM
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