Gasoline Precion in Vortec 4.3 EFI of 6 inject

Someone who can help me have a 1995 Sonoma (= wing s10) brings a Vortec 4.3 MFI engine of 6 injectors (it is not TBI) does not start before the problem did not fail at my home to my house is to show it and the next day I did not turn on and asta orita
not on the following tests

-current in spark plug cable if
there is a channel in the tank
. Below the cabin)
-The precion in gasoline purge is in 55psi


someone knows if this precion is correct since the electric wants to make a change of gasoline pump.


Any comments is well received.

Greetings Ferdav, check with a witness (trial lamp) if current reaches the injectors and if possible connect any bulb (if you have a better LED type) to one of them (as if it were an injector) to check if they are activating, another easy test is to inject some gasoline by the admission and give it to turn on, if there is spark truck (La Blazer 2000 needs minimum 60psi to turn on), when you perform the tests remove the air filter and listen if there are no petarders for the admission. Try everything possible before changing a piece, tell us how it went. Greetings.

Thank you very much for the information

the problem was solved

-the gas test is iso for the admission and the engine tried to start

-I choose to replace the gasoline pump
-a pump of use of a 2 -door blazzer truck with the same type of engine 4.3 vortec 6 injectors and of the same year
-many problems are installed when trying to remove the gas tank
-I recommend that when they bay to replace the gasoline pump In the CSO of the pick -up truck they remove the box only it has cunto screws and they already take out the pump without so much rroyo

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the Sonoma works well only a small problem that you open when I accelerate evenly a moment as it loses power but that is in a thousandths of a second but you want to have a tuning that is missing

in that way

Good that you could solve the problem, just in case it measures the pressure of gasoline, it seems that it had pressure failure with the previous pump. Greetings.

Good that you solved the problem, but I tell you pure that to change that fuel pump from your truck I take out the pick up, there are four bolts and already, it is shorter and you work much more comfortable.