You have a bad fuel pump or the wiring to the pump is shorted to ground somewhere.
The fuel pump relay on 1986 Chevy Elcamino 4.3 TBI is in the Fuel Injection Tank.
I need the wiring diagram on a 1986 Chevy silver ado dual fuel tanks
The fuel pump is shorting out and that is why the ecm fuse is blowing .Disconnect the the fuel pump and try it again,if the fuse blow's again then it is not the fuel pump.
It is fuel injected. Chevy quite using carburetors in late 1986. from there on everything is fuel injected.
On the fuel line going to the carburetor.
== ==
1986 should be carburatored and it is not required. That would only apply to a fuel injected engine.
late 1986.
no it had a computer controled quadajet
The fuel filter for a 1986 Chevy G20 should be mounted on the frame under the van. The filter is an inline type and should be easy to change.
If the air vents of the Chevy trailblazer 2004 are not blowing air, have the fuel pump checked.
My first thought is that the fuel pump is going bad and is drawing too many amps, second would be a wire grounding against metal.