Where is fuel cut off switch,1984 nissan 300zx non turbo

SOURCE: 1984 nissan 300zx turbo 50th AE

it is adjusted by the idle screw on the aac valve located on the plenum

SOURCE: Nissan 300zx no reverse or 4th gear.

Hi,
The first place I would look is the shift linkage for wear and a sloppy connection from wear.
adjustments may be made as a possible fix on the linkage rod.
Glad to be of assistance - Please rate the response - I can learn from your rating. Thank you

SOURCE: timing on a 1991 nissan 300zx

There is no means of setting the timing if you are referring to a conventional timing light. The engine is designed with sensors that sense the angle of the camshafts in relationship to the crankshaft and whether it is on the intake or exhaust stroke on the #1 cylinder. This design is actually a little more complex than that because it has variable valve timing which means that the angle in which the camshafts open and close the valves, change with RPM's This give the engine the best of both worlds. It's like have an engine with cams designed for torque at low RPM and a set of cams designed for HP with a free breathing quick revving engine you would have on a race course. The ECM is constantly changing the timing and injector pulse width based on many sources of input, from, the O2 sensor, air flow, air temp, coolant temp, fuel pressure, RPM's and a host of other inputs.
SO>>>>>>>>>>>> in a manner of speaking, unless you are making reference to setting up the timing chain, everything else is under control by the ECM and related components.

SOURCE: how much is it to change a fuel injector

Oh this is fun...

I have a 1993 300ZX N/A and have had two injectors go out on me at different times. This is an expensive fix for two reasons; 1) the injector. 2) the installation process.

If you're lucky you can find a shop or eBay seller with new or reconditioned injectors at an affordable price. $150~$275/injector is steep. Worse is the cost of removal and installation since the upper plenum and fuel rails must be removed. This is a design flaw by Nissan since you can see both screws to remove the injectors, but one is partially covered by the aliminum upper plenum (big silver colored aluminum air intake over the block). There are some sites that will talk about drilling or filing the plenum to allow access to the second screw, but this is highly frowned upon and you run the risk of putting a hole in the plenum. Best to leave this as-is.

It's cost effective to replace these yourself if you're handy with a wrench and a screwdriver. the cost for a shop to do this job is between $600 and $1000 for one injector. Most of the cost is the labor to remove and replace the plenum and fuel rails.

If you want to do this yourself, start with using a voltmeter and check each injector to find the bad one. Set the voltmeter to Ohms, disconnect the electrical from the injectors, and check the resistance between the contacts of each injector. They should read between 10 and 18 Ohms. Here's how:
http://www.2carpros.com/how_to/how_to_check_fuel_injector.htm

Here's a step by step process for replacement:
http://wiki.answers.com/Q/How_do_you_install_fuel_injectors_in_Nissan_300_ZX

Like I said, I paid for this twice and never again. Too much money for such a small part that I can do myself in my spare time.

Hope this helps!

SOURCE: 1984 Nissan 300zx non turbo VG30E engine wont rev

My vg30 dnt rev more than. 2200