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TBI No Fuel Condition
Update again: I got fuel although I'm scared because it just came back all of a sudden.... Still don't know what the issue was. I now have to do ignition timing and I think my timing light may have gone out. I'll keep updating this thread the more things I discover. I did notice a massive vacuum...- BigWheelie
- Post #8
- Forum: Tech Discussion
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TBI No Fuel Condition
Hello quick update. I verified injectors pulse with a noid light as I forgot to do that. I have not been able to check the relay power since it's just me. Ecm b fuse does not blow immediately and don't know how to trigger it to blow if I wanted- BigWheelie
- Post #7
- Forum: Tech Discussion
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TBI No Fuel Condition
Whats the best way to check the 440 circuit? I read it's the orange wire along the firewall harness? Just see if I get 12v off it ? I have not heard of the ECMI before either, is that at the fuse box? If so I believe I checked it since there were 2 "ecm" fuses- BigWheelie
- Post #5
- Forum: Tech Discussion
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TBI No Fuel Condition
Hi that test light idea is a good place to start. Only update I have is that it is getting spark since I had another hand to help check. Only 8-10v is making it from the truck wiring to the pump. I know these pumps do not like being undervoltaged but I havent been able to find anything that's...- BigWheelie
- Post #4
- Forum: Tech Discussion
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TBI No Fuel Condition
Sorry this might be long and complicated and i might be missing some things but i noticed this is a common issue with these TBI models and mine seems to be different then all the common resolutions. 1987 Chevy R30 454 TBI 75k mi I bought the truck not too long ago and after redoing the entire...- BigWheelie
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- Replies: 7
- Forum: Tech Discussion
