1992 Nissan Pathfinder no power

1992 NISSAN PATHFINDER
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JOMABUG
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Engine Performance problem
1992 Nissan Pathfinder 6 cyl Two Wheel Drive Automatic 226.00 miles

did a tune up,,hit the vacume canister,,had 2 get a new one,,,its got a hesatation,,,jumpy,,,like its not geting enough fuel,,changed the canister agian,,still doin it
May 30, 2009 at 7:55 AM
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RASMATAZ
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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
May 30, 2009 at 8:03 AM