I have a 305 tbi LO3, I verified fuel pressure, replaced regulator diaphram, ( bought rebuild kit), replaced all gaskets, still nothing from injectors. How can I verify If the injectors are trying to fire or if they are bad. I am getting absolutly nothing from either injector.
Could it be ECM? Also I checked all fuses for injectors and ECM?
I am starting to get worried here.

 

You can check the computer by getting the fuel injector/ EC tester from the Autozone. First, i would verify that you have voltage to the computer and the distributor. I went thru the same thing all because my distributor did not have power during start. That should get you started.

 

Ive never heard of these injectors going bad so its probably something else. Check to make sure all the connections are good for a start. A loose battery cable or ground strap will cause a no start. The next thing that you should check is the module and pickup coil in the distributer. If the coil is dead or the module is defective, there will be no reference pulse to the ecm and the injectors will not fire. Have the module as well as the pickup coil checked. If in doubt, replace them.

 

It was the ignition module. I took the module to be tested at advance auto. It tested good several times on thier tester, but I bought one any way. Fired right up after installation. Thanks for the help.

 

brings up a good point. This has happened in the past. Someone has the module tested and it tests ok yet their car still will not start. Theyll spend amonth looking for the problem only to find that it was the module all along. Goes to show that even a bad module can still test ok.