So I'm looking to tackle this job over the next 2 months... I got the steps from "Mendel's amazing links of knowledge"....yes I actually have a file folder named that. After re reading it for the 3rd time I understand that the cylinder head cover is supposed to be removed. But does it HAVE to be removed? The fuel rail will be in the way and the brake master cylinder (I HOPE) can just be moved out of the way and not disconnected from the brake system requiring a complete break bleed and refill. Who has done this repair job? Where did you source good rebuilt Fuel Injectors? I have time so I'd like to do this myself. Thoughts or feedback from those who have dont this job.......appreciated.
On my 4th read through...it looks like the cylinder head must come off.....but no mention of re bleeding the brake system...so the brake master cylinder reservoir tube I assume can be pinched closed with flat vice grips during the injector replacement......would you agree? Chap, Camper, RJ?, JWAP?...Tom?
I replaced them on my gen 1 (which is pretty much the same 1NZ engine) without removing the valve cover. Take a look at this thread. I have a set of 1NZ injectors here, restored by Rich Jensen, the last set that went through our PriusChat injector exchange some years ago. I would need to make sure the protective lube he puts in them hasn't become gummy as they've sat.
Here is a video showing not removing the cylinder head. He uses direct force to seat the new fuel injectors straight down into the block. I hope the o rings are well lubed and dont split. I thought you are supposed to rotate them into the cylinder head.....then add the fuel rail?
No no no no no no no oh my goodness no don't do that. The ends that go in the fuel rail have O rings. Put those ends very carefully into the fuel rail first, lubing and twisting as needed. The bottom ends that sit in the cylinder head sit in simple grommets. It's easy to get those ends in, as you install the rail with the injectors' O-ring ends already carefully inserted into it. If you put the injectors in the cylinder head first and then try to get the fuel rail installed over them, you take a significant chance that the O-ring ends won't go into the rail right. If you then try cranking down on the fuel rail bolts thinking "this'll make 'em go in", you will, if you are lucky, only destroy some O rings, and if you are less lucky, you will destroy some injectors.
