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Old 10-23-2010, 09:07 AM
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1987 Blazer K5 TBI issues.

I recently replaced my fuel pump, and noticed my fuel gauge operated in reverse, so I switched the wiring around in the factory electrical clip and it fixed the gauge issue. but I still am not getting fuel to the throttle body. I hear it running in the tank, not 100% sure if its running in the right direction though. What powers my injectors? maybe they took a dump? or am i not bleeding the fuel line properly? any thing would help.

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Old 10-23-2010, 09:50 AM
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Make sure you wired the pump correctly. Also this may sound stupid, but is there any gas in the tank? I actually made this stupid mistake and though my mech pump finally died so i went out and bought an electric one an the engine still wouldn't start. Turns out it ran out of gas while it was idling in the driveway; boy did i feel like an idiot. Also, make sure the injectors are working correctly and their not clogged up.
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Old 10-23-2010, 10:23 AM
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I have plenty of gas, I'm thinking i might have replaced the pump for no reason, maybe its my injectors. I'm unclear on what to do with this 87 TBI setup, is there a relay or fuse for the injectors i'm not seeing?
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Old 10-23-2010, 10:45 AM
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There's a fuse for everything so check the one for the injectors. Make sure the fuel filter is clogged.
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Old 10-23-2010, 04:40 PM
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well the injectors are working now, but it still wont fire. Not sure if the ignition module failed or the coil. I dont know how to determine which it could be.
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