Nissan maxiam can,t start after change fuel injector
I change my fuel injector and the car don,t start anymore.i went back and check to see if i everything is o.k and it is. i even add gas.and the car turn over but don,t start if i don,t put my foot on the gas it will not stay runing
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sounds like a prob. in the fuel raisl.you should have a vacuum operated valve in fuel rail. on top of the intake you should have a fuel line, it has fuel injectors connected to it. in the return line you will have a vacuum op. valve. if the diaphram is bad it will flood the eng. with fuel! maybe problem.
first check timing . if it:s ok then one or two intake valve is open . use injector cleaner direct remove spark plugs then crank engine for awhile , do it many time then try to start and check if still , need to open cylinder head and graind intake valve . this case some time happen when the ehaust silencer is close make sure the exhaust silencer is ok .
have u check you spark plug and leads make sure they are not worn out(or when was the last time you change them).or your injector could be block u should get some injector cleaner and pour it in your fuel tank when your next fill ( or get some one to clean them out $30 per injector)
Offhand, to my knowledge, if it were the fuel pump then all of the injectors would be suffering from the same problem and not only two. Though the low pressure could affect the engine performance, again it would be common to all. Based on this, I am more inclined to suspect the engine management computer. It is responsible for triggering when the injectors will allow fuel to spray into the combustion chamber. Inside the computer box would be individual switching transistors for each of the injector. It is likely that the two for the two "erring" injectors are faulty. One way to check is with the use of a voltmeter. Each injector would have two (2) wires, one is always supplied with +12 when the engine is running, the other would be pulsating in accordance with the RPM. If the pulsating +12 is missing (either always +12 or always 0), then you have just confirmed a faulty computer.
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