97 geo 1.3 intermittent start

no fuel from injector. [ fuel pump and presser good.] that's what i ment, I don't have a pressure gage but i jumped the fuel pump relay, then pulled clamp and hose off and it pumps like crazy. i tryed to stop fuel with my thumb over end of hose and couldn't . so im thinking that there is enough pressure? i checked autozone for new injector wow 195.00 didn't expect that much. but i did see they have an injector tester light for 25 , but my room mate said i didn't need that just use my multimeter, witch makes sense.what do you think any thing i can do? much appreciate any help! no fuel from injector. [ fuel pump and presser good.] that's what i ment, I don't have a pressure gage but i jumped the fuel pump relay, then pulled clamp and hose off and it pumps like crazy. i tryed to stop fuel with my thumb over end of hose and couldn't . so im thinking that there is enough pressure? i checked autozone for new injector wow 195.00 didn't expect that much. but i did see they have an injector tester light for 25 , but my room mate said i didn't need that just use my multimeter, witch makes sense.what do you think any thing i can do? much appreciate any help!

oh ya an you dont think bad crank or cam sensor would strop injector from firing? oh ya an you dont think bad crank or cam sensor would strop injector from firing?

O.K. I see what you meant. Yes, that does sound like enough pressure. And yes, you can check injector circuit with a meter, or acfually, I prefer using a test light. Here's how: pull off an injector connector. clip testlight lead to a ground (or meter to ground) and probe the connector with key on. Should have a steady light (or voltage) on one of the wires. If so, injector drive circuit is working, now check injector ground circuit: move testlight lead to the POSITIVE battery post and probe the injector wire that did not light up, while someone cranks the car. If ground circuit is working you should now have a blinking light (or meter will be showing voltage in a rapid on-off sequence). If both tests work, the injector circuit is working right to pulse, ( By shooting power into the ground circuit and cranking the car, computer will temporarily ground the circuit, for injector pulse. That's how you get the blinking light on the ground circuit.), If no steady light, check injector drive circuit . Sorry, no wiring diagram, so I don't know if power comes off ignition switch, or from the computer, or exactly how it arrives to injector. If no blinking light, check ground circuit from injector to computer.
Those two sensors (crank and cam) are for adjusting or changing spark timing in the ignition . Don't believe they affect injector circuit. Fuel trim by the computer relies mainly on the oxygen sensor. Good luck, you may have to check a wiring diaqgram to find your problem. You can register for free at autozone.com and list you make and model. I think they would show a wiring diagram, and maybe some helpful information to help you get your geo running.
How did the injector test come out? O.K. I see what you meant. Yes, that does sound like enough pressure. And yes, you can check injector circuit with a meter, or acfually, I prefer using a test light. Here's how: pull off an injector connector. clip testlight lead to a ground (or meter to ground) and probe the connector with key on. Should have a steady light (or voltage) on one of the wires. If so, injector drive circuit is working, now check injector ground circuit: move testlight lead to the POSITIVE battery post and probe the injector wire that did not light up, while someone cranks the car. If ground circuit is working you should now have a blinking light (or meter will be showing voltage in a rapid on-off sequence). If both tests work, the injector circuit is working right to pulse, ( By shooting power into the ground circuit and cranking the car, computer will temporarily ground the circuit, for injector pulse. That's how you get the blinking light on the ground circuit.), If no steady light, check injector drive circuit . Sorry, no wiring diagram, so I don't know if power comes off ignition switch, or from the computer, or exactly how it arrives to injector. If no blinking light, check ground circuit from injector to computer. Those two sensors (crank and cam) are for adjusting or changing spark timing in the ignition . Don't believe they affect injector circuit. Fuel trim by the computer relies mainly on the oxygen sensor. Good luck, you may have to check a wiring diaqgram to find your problem. You can register for free at autozone.com and list you make and model. I think they would show a wiring diagram, and maybe some helpful information to help you get your geo running. How did the injector test come out?

By the way, there should be a fuse for the injector. Be sure and check that. By the way, there should be a fuse for the injector. Be sure and check that.