The last time my 4cyl '96 Altima started, it ran rough for about 3 seconds, then died. After that, it cranks strong, but will not start.
What I know:
- Year-old spark plugs and wires are firing.
- Fuel is flowing through new fuel filter.
- Fuel pressure is good: pump charges to 42psi when key is 'ON'.
- Air intake tube is taking in air.
- Fuel pressure regulator is not spewing gas out the vacuum port (common fail condition, I'm told).
- Noid lights show that fuel injector harnesses are all energizing.
- Exhaust is smoggy-black (like unburnt gas, I'd guess).
I have tried spraying 'quick start fluid' into both the air intake and also directly into two cylinders, just to see if it would temporarily fire up (indicating a lack of fuel). No go.
The noid lights seemed to show that all fuel injectors are energizing at the same time. I would expect any injector to energize only on its cylinder's intake stroke. However, I vaguely recall hearing that injectors actually energize on several strokes...?
Q1: Any ideas what's up?
Q2: If the fuel line has 42psi (Nissan's spec, I think), does that indicate the fuel pressure regulator is working (and not just dumping all the fuel back in the tank)?
Q3: Are the injectors firing correctly?
Thanks!
First, never use starting fluid on a gasoline engine. Check for dirty air filter, then check for Mass air flow sensor (Fault code) . This sensor controls fuel mapping, bad signal here will cause over fueling (black smoke) also called loading up (rich). Stopped up Air filter will affect Mass air flow. Perform OBD II test to prevent buying unneeded parts. Also delete stored codes.
SOURCE: 1998 jeep grand cherokee will not start
Try resetting the asd "auto shut down fuse had a similar problem the jeep would crank but did not get spark or gas also check your fuel pump? and the asd relay may be bad it will prevent the jeep from getting no spark and will not fire some jeeps have security problems
SOURCE: Injector circuit test with "noid" lamp
Should be some specks on ohms you can perform without having the motor running. I just did one on a Nissia Maxima. Had the same prob...Check it with a ohm meter !!
Testimonial: "I'll check the specs, thanks."
SOURCE: 95 buick regal will start but dies right after
Exact same problem that I had on mine. The typical resistor trick was useless. Here is the only thing that saved it from the junkyard: http://newrockies.ca/vatsbypass
SOURCE: Hi Car wont start .Spark
Sounds like it could be. (without checking to see if you have a "pulse" at the injectors) You can usully hear a difference in the way it turns over with a cam belt issue.
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