Injector replacement

[Sdavne]

I have a 1990 NIssan 300ZX n/a 2+0 and i had a mis fire and found that the one injector is bad, someone told me you might have to take off the intake manafold? is that true. also does anyone know how to take the injector out and replace it. If your looking at the engine its the front left one. thanks

[Chattzx]

if its just the first one on the left use the dremel method its the easier solution

[bartZ32tt]

As said before, you can dremel it out. But I'd prefer taking the intake manifold off, especially is you haven't done a water bypass yet. Just spray the injector really well with pb blaster prior to starting for easy removal (mine popped right out). Anyways, there are loads of information already out there, just search

[Sdavne]

I think i am able to fish it out i got the injector, but in researching it people seem to say that the injectors fail alot and i should replace all of them even though they all only have around 20k on them. any thoughts thanks

[grk nickafis]

If you use enriched fuels, it will ruin the "early style" injectors. They came out with "New style" injectors in 1993. They make kits to change them but its like 800 dollars on Z1 and I dont think its worth it unless you have the money to spend. I dont, so i'm just swapping the broke inectors for 70 bucks on z1.