Question about 2003 Nissan Altima
Check the fuel filter for possible blockages.
the fuel system has some blockages.
Posted on Aug 28, 2009
Check the coil for a spark. The spark should arc between two points at least a half inch
(give or take a 1/16th inch). If you aren't getting that much, you
should begin you focus there. If the coil is too weak to do it's job,
and the resistance in spark plug 3 is a little greater than the other
plugs, it will lead to a miss. Based on what you have already done,
replacing the coil would be my next course of action. The speed in which the coil fires is dependant on RPM of the motor.
When cranking, the coil should only be firing roughly a few times a
second since the motor is really only spinning at like a hundred RPM or
so. If the arcs don't seem to be evenly timed apart, shorten the gap
until you get a consistent rhythm, and if you are less than a half inch
away at that point, the coils output is too low to run your engine
effectively. The quicker the coil has to fire (higher RPMS), typically
it has more voltage output, which may explain why the starting fluid
trick worked, since starting fluid has a lower flash point. Another option would be to replace the distributor cap, and the rotor.
Posted on Aug 29, 2009
Testimonial: "When I checked the fuse box under the drivers side panel I didn't get any reading after I took the fuse out while I had the key turned on. Why ?"
If starter motor does not engage , then check ignition, ignition switch and starter motor.
Ensure that fuses are ok.
If the starter motor is running, check if there is fuel pressure and if there is volts at spark plugs and injectors.
If there is no fuel pressure check fuel pump.
If there is no spark check distributor rotor.
If there is no spark and no power to injector check distribution coil.
A good thing to do would be scanning the car computer with an OBDII code reader, to pull down codes.
Fuel pressure can be read placing a pressure gauge between the fuel lines.
Often a faulty powertrain control module or ECM can also cause similar problems.
Posted on Aug 28, 2009
This sounds like a electrical problem. This car has no distributor rotor, cap or traditional spark plug wires. It sounds like it could be a crank or cam sensor. Those 2 items control the timing of this engine and without one the ECM will not turn on the fuel injector's or the coil packs.
Posted on Sep 03, 2009
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Your problem may be one of the following:
First check or just replace the fuel filter. Usually located under the car in front of the rear axle, drivers side.
Next, the fuel pump may be worn out. Usually they get loud or stop working (running).
Next, check the fuel pressure regulator. Usually located on the front fuel rail, drivers side.
Is the vacuum line attached? Not leaking or rotted?
Also, do you smell a strong fuel odor when it won't start? May be one or more stuck-open injectors, or the coil pack is bad.
Checking these in the order listed will more than likely fix your problem.
The clicking noise indicates the battery can no longer run the starter, which also means the fuel pump won't run either.
It could be a fuel issue. How old is the fuel filter? Can you hear the pump run for a few seconds when you turn the key on? Try turning the key to ON without trying to start engine three times waiting for the pump to stop running each time. Then try to start the engine. If it starts, Its a form of Vapor lock caused by the extreme heat we have had lately, and a weak fuel pump.
If none of this works, try a new fuel filter first. From there have someone check the fuel pressure regulator and then the pump. If you are in need of a new pump, take my word for it and spend the money to get one from a Dealer, and not from your favorite parts store. Most parts store parts are made in China and they are JUNK.
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