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Old 04-05-2010, 10:31 AM   #1
TheSilkySmooth
 
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HELP! VVTi spool valve cleaning?

My VVTI is acting up - not giving me that nice turbo like midrange boost it used to do. IIR there is a spool valve for the vvti on the head and maybe a filter screen in front of it that gets clogged? Anyone mess with this and did you see a clogged screen? I think there was a thread on this but I cant get it.
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Old 04-05-2010, 02:16 PM   #2
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I found this thread, but I remember somthing about a oil screen in there. How do you get the screen out? Fishook it?

http://www.yarisworld.com/forums/sho...+control+valve
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Old 04-06-2010, 09:07 AM   #3
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You guys and gals dont think this is a problem I sould worry about if there is no code thrown? - am I just getting paranoid about anything?
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Old 04-06-2010, 11:22 AM   #4
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If you have no check engine light i would leave things be. Your car is still new. If you feel the car is not acting like it should its under warrenty anyways. You might try to do a fuel system cleaning/intake decarbonizing. That will help significantly if you do a lot of short trip driving.
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Old 04-06-2010, 04:24 PM   #5
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The car gets driven pretty aggressively and wailed on on the highway. I didnt do the exhaust replacement TSB either. I wonder if the front exhaust pipe collapsed internally ( I guess the reason for the tsb). Its just getting down on power.
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