Shaan

I have an 83 Maxima 5 speed and i have a couple problems with it. For one a fuel injector leaks and for the life of me i cannot get the fuel injection system off and the service manual is useless. also i've had a problem where after driving for a bit the rpms will drop to around 500 (no matter where it is revving at the time) and the car will not respond to throttle. any suggestions on either of these problems?

John L

Just one leaking injector? Lucky you. All 6 of mine were pushing fuel out both sides. It's a PITA! The fuel rail that runs from the line off the filter, goes to the pressure regulator and into each injector has to come off along with a bunch of vacuum and I can hardly remember what all else. I would recommend a new fuel pressure regulator. I got all mine from Victoria British's Z car catalogue but ordered through George Merryweather of Classic Restorations www.classicr.com I got the wrong ones (for some reason someone had 280ZX turbo injectors an a non turbo L28E) but they work fine.
As for the dropping RPMs, if not the FPR, next chech the throttle position sensor. If you replace any fuel hoses make sure it's high pressure line!!
Good luck!

Bleach

I pulled the fuel rail a couple times on my 280zx.
You have to remove the power steering pump and the front brackets for the pump. Take off the gas cap to releive fuel pressure in the tank. Undo the fuel lines coming out the top of the fuel filter. Unscrew the fuel rail mounts on the intake manifold. Then you'll have the slip the front fuel rail bracket off the front of the engine head. The bracket will bend a little. Each fuel injector holder has to come off. They are held on with two screws each. After that, I think the fuel rail lifts out. You can then replace the fuel injector(s) and put the rail back down.
It is very time consuming.
On mine, one injector started leaking and I just let it go for a few weeks. Soon after other started leaking. I would suggest you replace all six injectors or you might be removing the fuel rail again in a couple months.