z32 fuel system

[tharrington0]

how difficult is it to change the efi harness, run 555cc injectors and replace the coils and maybe fuel rails? any tutorials or advise to do so on a 93 z32tt would be great.

[bimrtech]

coils piece of cake. If you can change the plugs, you can change the coils.First Why? Why do you think think the coils are bad?

EFI Harness again why?Are you having a wiring issue? These cars are prone to need injector harness replaced as well as the harness on the pass side exh cam cover. While the engine is running grab the harness that goes along the front above the t stat outlet by the t belt cover. go ahead and bend and tug at it. If the engine changes idle speed then the harness needs to be repaired. Same goes with the injector harness. I would not recomend changing out the entire harness.

Injectors, again not that bad if you need specifics let me know. I am wondering if you need the bigger injectors or are chasing down another issue as you stated that you wanted to replace the coils and EFI harness.

Joe

Joe

[tharrington0]

my whole fuel system is coroded and the coils are bad. i have a pretty bad misfire at idle. I have 2 new stock injectors but the other four are bound to fail soon I can feel it when I accelerate. only reason I want 555 is to push higher boost once i fix the injection problem. oh as for the coils I had a tech look at the car and the coils are in pretty bad shape. car sat for over a year.

[driftingmy240sx]

its a long frustrating job but is do-able by an intermediate mechanically inclined person. hardest part is the egr tubes.