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1992 Mazda 323 Fuel Problem?

Tiny
NANDJABRAHAMS
  • MEMBER
  • 1992 MAZDA 323
Engine Mechanical problem
1992 Mazda 323 4 cyl Two Wheel Drive Manual

Ok my mazda starts and idles fine but upon giving it some throttle it badly misses and wont rev at all. It gradually come about as I was driving and couldnt get it above 60km/h as it just runs sparadically. Ive changed all filters thinking they may of been blocked but it wasn't to be. PLEASE HELP!
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Saturday, August 29th, 2009 AT 6:59 PM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Dirty fuel injectors (cleaning the injectors often fixes this).
Bad MAP (manifold absolute pressure) sensor
Bad TPS (throttle position) sensor
Bad or dirty MAF (mass airflow) sensor
Low fuel pressure (leaky fuel pressure regulator or weak fuel pump)
Vacuum leaks (intake manifold, vacuum hoses, throttle body, EGR valve)
Bad gasoline (fuel contaminated with water or too much alcohol)

Sometimes, what feels like a hesitation is actually ignition misfire rather than lean misfire. The causes of ignition misfire may include:

Dirty or worn spark plugs
Bad plug wires
Weak ignition coil
Wet plug wires
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Saturday, August 29th, 2009 AT 7:07 PM

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