Question about 1995 Nissan Maxima

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I have a 1995 nissan maxima and after cranking it up i notice that my fuel is flowing straight out the exhaust whatcould be the problem

I need help diagnosing the problem ... is it my fuel pressure regulator or possibily the injectors

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  • bill Apr 19, 2013

    these were all good answers but john babiasz yes i am sure it is fuel running out it is as if though the fuel is running from the gas tank to the exhaust with nothing inbetween

  • John Babiasz Apr 19, 2013

    Very Good ,didn't think of that one

  • John Babiasz Apr 19, 2013

    Like I said I would check fuel pressure which if too high could be caused by

  • John Babiasz Apr 19, 2013

    Like i said Iwould check fuel pressure. If too high indicates a bad regulator or a restriction in the return line going back to the tank. Ifuel pressure normal, shut engine off , pressure should remain steady for at least a half hour. If it drps off quickly you have leaking injector. when doing the engine off test clamp off return line

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  • 8 Answers

Are you sure it's fuel? Not likely,if you were using excess fuel there
would be alot of black smoke coming from tailpipe. It could be water
as condensation, which is normal. However if you are getting alot of
black smoke, the first thing I would check is fuel pressure to detemine
if the regulator is defective.

Posted on Apr 19, 2013

  • bill Apr 19, 2013

    hey john ya i am sure its gas its like there is nothing between the gas tank and the exhaust pipe

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Posted on Jan 02, 2017

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SOURCE: 1988 Nissan Maxima/ Fuel Delivery

It might be the mass air flow sensor

Posted on Jul 14, 2008

  • 383 Answers

SOURCE: Fuel Pressue 1987 Nissan maxima

1st I hope you are taking the fuel pressure from the correct side of the system. The correct side will be the side coming from the fuel filter and before the fuel pressure regulator. At a normal idle, the pressure should be roughly 30-33 psi. When you crack the throttle rapidly, a sudden vacuum drop will cause the diaphragm in the fuel pressure regulator to shift causing the fuel pressure to jump sharply. Usually to 45 or 50 psi. You can check the maximum fuel pressure by dead heading the pump. This can be done by simply pinching off the return hose to the fuel tank. At an idle, the maximum fuel pressure the pump will put out will be displayed. You will also notice a slight jump in rpm's because it cause the fuel mixture to fatten up before the ECM can respond to changing the pulse width based off of the o2 sensor.
I hope my answer was satisfactory.

Posted on Apr 02, 2009

  • 1218 Answers

SOURCE: 2002 maxima check engine light came on

First thing I would do is make sure you battery cables have a flawless connection. I had a Honda with a similar problem. I changed the battery cable and it all went away. Like magic. Sometimes these can be a simple fix.

Posted on Feb 20, 2009

  • 33 Answers

SOURCE: my 1995 nissan maxima needs a fuel injector

if its one. for a nissan the fuel injector can range from 150 to 300 dollors. what will kill you is the labor. you can drive your car but try to just go to work school what ever your priotities are. dont drive far until fixed. you have several injector which one can cause the other to malfunction. becareful and fix asap

Posted on Jun 04, 2009

frcs68
  • 1605 Answers

SOURCE: MY 96 Nissan Maxima has rough idle and is blowning

blown head gasket. black smoke means that oil is getting into the cylinder.

Posted on Jun 11, 2009

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