non-starter air in fuel system?

philmyaudi

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Okay so you may or may not remember me. But i was on here not so long ago with a possible failed fuel pump. It was the module that had gone so i have now had that repaired and refitted it the codes the ecu was throwing have now gone.

When fault finding before being sure it was the edc at fault i undone the fuel lines to the injectors,Even took the rocker cover off (as i had a needle lift sensor) meaning i took the return/overflow lines off too.

Even now the fuel still gets to the injectors, ive topped the filter up, leaving the bleed nipple open. I have even tried cracking the injectors one at a time to let the air out whilst turning the engine over and still no luck. Its an auto so i can't bump start. My next step is going to be repeat the process + some easy start.

When i loosen the the injectors should i be doing them one at a time. Or just crack them half/all off a turn or so (not tried that yet)

Or if there are any other tips you guys know then please let me know
 
When I done mine, I had some one turn it over and started on the middle left bank. However I did make sure pump and filter were full
 
Which vehicle and production year ?