Please Need Help!! '93

4rockin'

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I have a '93 4runner V6 4x4 w/ 163k miles and it has been a champ! Just recently it has lacked in power (just a tad.. but noticeable) going up hill and on the freeway. It also began to miss fire when it runs around 2000 rpms. I changed the cap and rotor along with the plugs and plug wires. I started it up and it ran great... no miss fire. But when I put it in gear for a test drive its started to shake a little bit and had a huge lack of power (about had to floor it to get up my driveway). Im stumped. If anyone could please help I would appreciate it. Thanks
 
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Seems to me you started off really good.
Those are all good things to change if there are problems.
I would check the timing and also the fuel filter could be clogged it seems.
Is it an auto transmission?
 
If you have a multimeter I would test your airflow meter, throttle position sensor, and any other sensors you have on the motor that the factory service manual will cover.

Sorry I cannot be too much help, I'm not very familiar with the 3.0's.

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Seems to me you started off really good.
Those are all good things to change if there are problems.
I would check the timing and also the fuel filter could be clogged it seems.
Is it an auto transmission?

Yeah its auto. I also thought of checking the timing.
 
I changed the cap and rotor along with the plugs and plug wires. I started it up and it ran great... no miss fire. But when I put it in gear for a test drive its started to shake a little bit and had a huge lack of power (about had to floor it to get up my driveway). Im stumped. If anyone could please help I would appreciate it. Thanks

Sound like you have some plugwires swapped. Make sure the 1 on the distributor is going to the #1 cylinder and so on.
 
Can you put the old parts back on to see if the problem still persists? Maybe at least get it back to where it was.
 
I checked all wires and they were in the correct spots. When I start it and rev the engine it runs smooth but it feels like it may be starving for air... or bad compression. I checked the timing and its good. I did remove the air intake to get to a few of the plugs but put everything back into place. I also found some oil had leaked over night. Cant tell really where it came from. It could be unrelated but Im not sure.
 

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