First you have a couple of things mixed up. You have plenty of fuel flowing to the carb, but in the next sentence you mention fuel injectors. You can't have both!
First determine which -
With carb - rebuild carb for stuck float seat and make sure all the idle passages are open.
With fuel injection - check fuel pressure at the rails make sure around 60psi or so. I'm betting you don't have then replace the fuel pump which should be back by the tank.
Doug
SOURCE: 1987 Nissan Sentra diagram for fuel line routing
There are many online wiring diagram solutions, but the cheapest way to find your diagram is to purchase a haynes or chilton manual from the local auto parts store. Both have excellent wiring, fuel lines, brakelines, etc diagrams. I prefer the Haynes manual myself.
SOURCE: My Nissan Pickup is losing power
If you take the vehicle to a local shop, you can get a mechanic to do a compression check on each one of your cyllinders. This will tell you if your engine is holding pressure. If that checks out, it would have to be a fuel problem, (injectors, pump, filter, or clogged line) or maybe spend the couple bucks, and buy yourself a new MAF (mass airflow sensor) it may be the problem, but if not, it always helps to change.
SOURCE: 1995 nissan pickup bogs down,feels sluggish
i thought i had answered this for you, i was old to tell you that it is a relay switch thats on the firewall or near the battery. if you want me to give you more info please email me, [email protected] and ill give you more details if you need them, my fiancee knows what the solution is and he isnt here right now but told me before...let me know!! thanks
SOURCE: I HAVE A 1986 NISSAN
Its BOTH, sort of....TBI Throttle Body Injection. If you look into the carb with engine running, you will see the injector spraying fuel onto the butterfly.
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