Replace fuel injector and car cannot start in maxiam
I have 1993 nissan maxiam. and i replace two fuel injector and now the car is having a new problem.it can start but it shout itself off immediately and it wil not stay on no matter what i do. i know it don,t need gas because i put some in it before i try and start it up. can someone help me please
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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.
Switch the fuel injector from number six to number one. Does the number six cylinder still have the same problem? If so the injector is not your problem. If number six injector is fine now and number one has the problem. Then replace the number one fuel injector with a new one. It must have been defective.
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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