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rafmal
New User
| Posts: 1
| Joined: 02/09
Posted: 02/15/09
06:12 AM
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I have an 05 Nissan Altima with 106,000 miles on it. I am starting to have some problems with it now. When I start the car, it is chokes a bit and the 'Service Engine Light' keeps going on and off. I took it to the Nissan dealership and they told me that it is a P0303 code, which means that coil 3 is misfiring. So they replaced the spark plugs, and I think they also switched coil 2 with coil 3 just to check if the problem is in fact with coil 3. Thinking that the dealership would charge me too much, I took it to my mechanic's. He told me that he thinks it is the fuel injector. I've also put the fuel cleaning system in the car. The light has gone on and off throughout this whole ordeal several times. Now i am having the same issue again the check engine soon light is back on. If anyone has any thoughts, please help me.
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waynep712
Enthusiast
| Posts: 652
| Joined: 10/08
Posted: 02/15/09
03:34 PM
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sometimes... you have to use an injector cleaning machine... it hooks up to the fuel rail and the car runs on cleaner directly.. no fuel from the tank...
i have on some model cars had to remove the injectors to get them properly cleaned...
sometimes you just have to replace them...
if you have to remove them.. or replace them... you might also think about a fuel pressure regulator... and a NEW FUEL FILTER
remember... the fuel filter does not just filter the fuel that is used by the motor... the fuel pump circulates the fuel again and again through it... as the pressure regulator maintains the pressure by dumping excess back to the tank..
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