Celica Forums General Discussion General Loss of Fuel pressure

Good evening

I came on here to find a solution to an issue i've been having. I have a 1zz that is having weird fuel pressure issues. Just installed the mwr pump, new fuel regulator, new fuel filter (the lower housing for the pump) new fuel injectors and the mwr fuel rail.

What is happening is I crank without starting it a few times, pump sends fuel to the rail, then I fully turn over the car. The car runs for about a minute or two. I have a a/f gauge and everytime it slowly starts getting leaner and leaner, 16...17...18... then jumps to 24, meaning I don't have fuel.

I was having this issue before I installed any of these new parts so i'm kinda at a loss

Any help would be great, thank you👍

Update: Ended up finding the issue. Unburnt fuel had clogged the 02 sensors. I took them off and cleaned them with brake clean. Before I upgraded my fuel system I was running 2zz injectors causing an excessive amount of fuel.