No Fuel

[jon93]

What are possible reasons all 6 injectors don't fire when I have timing, spark, and pressure at the rails in my 91?

 

[mrecoolgar]

For my 1989 it was a faulty computer.

 

[rubydist]

and it could also be bad wiring / bad ground anywhere in that circuit.

 

[jon93]

I swapped out the computer and still no injectors.

 

[jon93]

All six fuel injectors were bad. Replaced them all and she fired right up.

 

[TimboSHO]

Wow! Did the car sit for awhile? That's pretty wild! Glad you got it solved!

 

[jon93]

This motor sat for three years under my ownership and who knows how long before I owned it.

 

[rubydist]

This motor sat for three years under my ownership and who knows how long before I owned it.

that would have been helpful information to know in your first post, as we would have immediately told you to check if the injectors were gummed up...

 

[SHOdded]

Glad you got 'er up and running! Fuel injectors are an oft neglected part on this car. Probably best to get them professionally cleaned & flowrated if you intend to keep 'em.

 

[jon93]

that would have been helpful information to know in your first post, as we would have immediately told you to check if the injectors were gummed up...

hindsight is 20/20

I assembled this engine from a bare short block. It could have been anything.

 

[gmail]

Id be inclined to think its something else.. check that ground wire thay sits in the injector valley

 

[jon93]

Id be inclined to think its something else.. check that ground wire thay sits in the injector valley

Did you not read post #5

 

[gmail]

Yeah I did but 6 injectors went bad at the same time seems far fetched.. I had a jeep that sat for 2 years and 2 injectors were bad not 6..
Also replacing the injectors might have wiggled the wiring or the ground which made contact again

 

[jon93]

Yeah I did but 6 injectors went bad at the same time seems far fetched.. I had a jeep that sat for 2 years and 2 injectors were bad not 6..
Also replacing the injectors might have wiggled the wiring or the ground which made contact again

You're logic makes sense. I didn't want to believe it at first either. I tested all six injectors. All six injectors are stuck. You may test them yourself if you wish but you would be wasting your time.