1986 Nissan Truck

1986 NISSAN TRUCK
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JOSEPH RIEMER
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Engine Mechanical problem
1986 Nissan Truck 6 cyl Four Wheel Drive Manual

i just replaced the water pump and the timing belt on my 1986 nissan truck 3.0 6 cylinder 4 wheel drive after i was done i then needed to advance the timing on the engine greatly to have good pickup and reduce studdering when on a load why is this and i am worried i may burn out a valve or anything like that can this happen and what can i do to lessen the advance and still run good
Jan 30, 2009 at 4:20 PM
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RASMATAZ
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Poor acceleration other than ignition timing-Did you position the sprockets correctly and in compression stroke/TDC on no. 1 cyl. If so try check the following below

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
Jan 30, 2009 at 4:35 PM
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JOSEPH RIEMER
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whoever answered my question i want to let u know 99 percent of the things u said are bad are good and yes i did make sure all sprockets and timing belt lines were matched up and the only time i had problems was in third or fith gear when im in a slow speed and i give it gas once i turned the distributer far to advance it went away i dont think i should pull distributer out and move one tooth to have room to play with as far as timing it goes do u i do know the old belt was stretched pretty good does that mean anything
Jan 30, 2009 at 4:57 PM
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RASMATAZ
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Check the air gap between the stator and reluctor should be .012-.020 also the resistance of the pick up coil and also test the throttle position sensor and get back with some results
Jan 30, 2009 at 5:22 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.