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Old 12-07-2004, 02:12 PM
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no spark or fuel 350 tbi?

I have a 90 suburban 350 and just put new spark plug wires and plugs in. I started it it was fine. I only ran it about two minutes. I went out of town for two weeks came back now there is no fuel getting to the injectors or spark? I have so far checked the fuel pressure, pump, changed fuel pump relay. Swapped chips then computer. Volt meter tells me injectors are getting power. Any ideas?

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Old 12-07-2004, 03:01 PM
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Have you verified fuel pressure?
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Old 12-07-2004, 03:06 PM
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If you are sure there is no spark, you can try the ignition modual. It controls both spark, and fuel to some extent. I would guess that you are getting fuel to the throttle body, but no injector pulse. Also, I have seen the pickups on these fall apart, and if they are screwed, the injectors won't fire, and you will have no spark. Also, the reluctor on the top of the dizzy shaft can lose magnitism and kill the whole shebang, causes lots interesting problems. Hope this helps!
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Old 12-07-2004, 03:14 PM
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well. if the injectors are getting juice I'd check to see if they are getting fuel. just turn it over and see if any comes out and I'd double check the fuel pump.
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Old 12-07-2004, 03:18 PM
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no spark of fuel

Fuel pressure was 10lbs. About 6 months ago I replaced the distributor, but is was a Profile from Jegs not GM. Is the ignition module the two prongs on the distributor or something else?
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Old 12-09-2004, 08:45 PM
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Thank you

Ignition module! I put my old one in Fired Right Up!
Thanks for the help!
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