1992 Nissan Maxima POOR GAS MILEAGE

Tiny
JBULLARD1905
  • MEMBER
  • 1992 NISSAN MAXIMA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 185,000 MILES
The car has no power and is getting poor fuel mileage. The front middle cylinder is not firing. I have changed the timing belt, spark plugs, sparkplug wires, and the fuel injector. I put a hose up against the changed fuel injector and could hear it clicking. The exaust has a strong odor of raw fuel. When taking off from a stop. The car has trouble taking off. You can hear it backfiring in the intake. We checked the compression and it checked around 160 psi.
Sunday, February 8th, 2009 AT 2:39 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Possible causes include a bad O2 sensor, excessive fuel pressure (bad fuel pressure regulator or plugged return line), leaky fuel injectors, dirty air filter or restricted air inlet, or a defective coolant sensor that prevents the engine management system from going into closed loop mode.
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Sunday, February 8th, 2009 AT 3:42 PM

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