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1991 Nissan 300ZX Questions & Answers
I replaced my fuel injector # 3 and all spark
the ecu is located behind the passenger kick panel , there is a little window at the top of it which has 2 lights in it red and green, turn the key to the on position, do not start engine, push gas pedal all the way down then release, the lights will start blinking, for example if you get 3 green blinks and 2 red blinks that means code 32, 5 green and 1 red code 51, there is a list on the front of the ecu that tells you what each code means
300zx cylinder 5 and 6 wont fire
take a known good wire and install on cylinder 5.if it fires replace the wire and do same on cylinder 6.if this has no effect replace the cap and rotor.If the cap is broken check the motor mounts for too much movement. Ask when you are going to buy the new cap.Have you pulled the diagnostic codes? They sometimes tell where to look.Success!!!
I have a 1991 Nissan 300ZX and when I turn the key on the fuel pump will not keep pumping please help
When you turn the key to on, not start, the pump should come on for about two seconds and then shut off. It won't come back on until the car is being cranked. Then it should be on, and remain on when the car is running. If the car won't start, and you suspect a fuel or fuel pump problem, the best way to check it is have the fuel pressure tested. Correct pressure at the injectors is critical for the engine to get enough gas to run proper.If you don't want the pressure test, and only want to verify pump is working, then break into the fuel line somewhere convenient and see if gas spurts out when you are cranking the engine over. If it does, pump is working. If no gas comes out, line is plugged or pump is not working. To test for power to the pump, a mechanic would check for power at the fuel pump connector while the engine was being cranked.
How do I replace the fuel injectors in a 300zx
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 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.htmHere's a step by step process for replacement:http://wiki.answers.com/Q/How_do_you_install_fuel_injectors_in_Nissan_300_ZXLike 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.
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