Friday, June 3, 2011

Not getting fuel to injectors on 1989 surburban?

have changed fuel filter and getting fuel through filter|||It sounds like your problem is at the TBI unit. Remove the air cleaner, and check the wiring going to the 2 injectors inside the air horn. Do a pull test on all the wires/plugs for a loose one.





Are the bottom of the injectors wet from fuel after JUST cranking the motor? If they are, then it probably is a spark problem. If they are still dry, you may not be getting electrical power/computer signal to the injectors. I%26#039;m not sure if there is a micro-screen at the incoming side of the TBI unit at the fuel inlet. Disconnect the fuel line toward the rear of the TBI unit and see if there is a screen at all... Could be clogged.





I still vote electrical. Good luck|||there has to be an ubstruction past the filter check you lines make sure there is no fuel leaking anywhere|||do you have enough pressure? A weak fuel pump can send fuelpast the filter but not all the way to the engine you need a lot of pressure to get it that far,|||ok either there HAS TO BE A LEAK at thne fuel rail or the rail is clogged





it could also be that the fuel pressure regulator is send to a wrong setting sending all the fuel back to the tank





does it start does it start and then die MORE DETAILS PLEASE