95.5-2004 Tacomas & 96-2002 4Runners 4th gen pickups and 3rd gen 4Runners

3.0 unusually underpowered

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Old Sep 16, 2004 | 07:25 PM
  #1  
patterson's Avatar
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From: Oregon
3.0 unusually underpowered

i took off my timing belt to do a couple of things and put it back on and got everything lined up and set the timing, took it for a drive and before it was powerful for a v6, but now its way weaker then my parents 3.0 v6.

i dont get whats wrong with it.
i also tried to adjust my mass air flow sensor and becuase before it was running way rich, but no matter how i turn the adjuster its still slow just idles bad or good or dies

it also shoots out carbon alot when i give it gas like it paints the walls
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Old Sep 16, 2004 | 09:26 PM
  #2  
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From: Oregon
come on somebody has to know something that will help

could it be the distributor is 180 degrees off
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Old Sep 16, 2004 | 09:38 PM
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From: Sonora, CA
There is a chance. You might want to check it out. Just turn the engine with your finger over the spark plug hole of the number 1 cylinder. When you feel a significant amount of compression, line up the timing marks. Take the cap off the distributor and see where it is pointing.
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Old Sep 17, 2004 | 03:03 AM
  #4  
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From: El Paso, TX
[QUOTE=patterson]i took off my timing belt to do a couple of things and put it back on QUOTE]

Repeat after me...Never reuse a timing belt. Never reuse a timing belt. Never reuse a timing belt.

Go buy a new Toyota TB (never use an aftermarket belt), install and button 'er back up again. I'll bet the problem is gone.
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Old Sep 17, 2004 | 11:43 AM
  #5  
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From: Pennsylvania
Originally Posted by patterson
i took off my timing belt to do a couple of things and put it back on and got everything lined up and set the timing, took it for a drive and before it was powerful for a v6, but now its way weaker then my parents 3.0 v6.

i dont get whats wrong with it.
i also tried to adjust my mass air flow sensor and becuase before it was running way rich, but no matter how i turn the adjuster its still slow just idles bad or good or dies

it also shoots out carbon alot when i give it gas like it paints the walls
1st off you can reuse your timing belt, the adjuster will take up the slack!
I've reuse t-belts many a time without any problems! What I do believe is that you might have it off a toothe for one and "stop messing with the AFM!"
Your still running rich if it's shooting carbon out! I adjusted my afm 1 - 2 clicks rich on mine because I had my heads done, air intake mod...! If it's stock let the afm alone! I also adjusted mine by cutting the sealant on top of the afm vs. drilling the screw out!
Put #1 cyl. to tdc and yout rotor button should point to it!
I'd check your timing, check to make sure the belt isn't a tooth off and adj. your afm to spec.! I think your t-belt is a tooth or so off!
Good Luck!
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