have a 95 altima new fuel pump having hard time starting .starting fluid helps .start up inject .bad?

Answer 1

Possibly fuel injector, oxygen sensor, fuel regulator etc....injector might be dirty and need flushing or replacement.

Not certain if you've checked battery ... just in case, also ensure cables aren't corroded ...clean with fine sandpaper if they are and reconnect securely.

If you have an error code meter (can be purchased for appx $40), ensure it is Nissan capable...you can test the relay between computer and sensors. The unit comes with an error code book which will possibly give you an indication as to what has failed.

Engine Light Service Soon on? The above will give you one or more of the following error codes:

11 Crankshaft Position Sensor
12 Air Flow Meter
13 Engine Coolant Temperature Sensor
14 Vehicle Speed Sensor
21 Ignition Signal
22 Fuel Pump
31 Engine Control Unit
32 EGR Function
33 Oxygen (O2) Sensor
34 Knock Sensor (Turbo Only)
35 EGR Temperature Sensor
43 Throttle Position Sensor
45 Injector Leak
51 Injector Circuit
54 A/T Control
55 No Faults In Memory

If any of the above codes read...I suggest Auto tech be consulted...they have the diagnostics tools to accurately and easily pinpoint specific reason. Your no start could be any one or more problems from the simplest (battery post/cable corrosion to vacuum lines loose or more). Save yourself the frustration of attempting to narrow things down and have it checked out by a competent and knowledgeable source.

Good luck