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HELP with rough running in 2vz-fe

Discussion in 'Performance and Tuning' started by FreidTaco, Feb 23, 2014.

  1. Feb 23, 2014 at 2:52 PM
    #1
    FreidTaco

    FreidTaco [OP] 'merica

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    Just bought a 1991 camry v6 manual with the 2vz-fe engine.
    Had been sitting for a couple of years.
    We just drove it 400 miles and ran heat and injector cleaner through it. WE have only been running premium gas.

    We are having troubles with getting the engine to run well.
    Idles fine.
    Engine runs rough from 1k to 3k
    Runs great at 3k to 4.5k
    Can not get it above 4.5k
    Even parked trying to rev it, it will not go above that.
    Redline is supposed to be at 6.8k

    Hard to get going, bucks and knocks below 2.5k

    Any Help would be greatly appreciated.
     
  2. Feb 23, 2014 at 3:10 PM
    #2
    FreidTaco

    FreidTaco [OP] 'merica

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    Anyone? We are currently driving through a blizzard.
     
  3. Feb 24, 2014 at 4:47 PM
    #3
    FreidTaco

    FreidTaco [OP] 'merica

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    Possibly narrowed it down to a timing issue. Fingers crossed. Above know what degree this engine is supposed to be running at?
     
  4. Feb 24, 2014 at 8:14 PM
    #4
    Blackdawg

    Blackdawg Dr. Frankenstein

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    Plugged cat? Dead O2s?

    i can't find anying timing info on it yet.
     
  5. Feb 24, 2014 at 8:20 PM
    #5
    FreidTaco

    FreidTaco [OP] 'merica

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    we did have CEL come on originally and did a manual check of the codes and they came up as a knock sensor (due to bad gas) and then a starter position sensor (wire was just poorly twisted together, fixed with solder). went away after 100 miles on premium gas and now no codes.
     
  6. Feb 25, 2014 at 11:18 AM
    #6
    FreidTaco

    FreidTaco [OP] 'merica

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    No one rents a dang timing light here in town.
     
  7. Feb 28, 2014 at 10:08 AM
    #7
    Torspd

    Torspd Tor-nication

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    So you let it sit for a few years with gas in it. Started it and drove it, and it ran bad? Separation of ethanol content in the gasoline. Be a very good idea to change the fuel filter as well. Very good idea.
     
  8. Feb 28, 2014 at 10:11 AM
    #8
    Torspd

    Torspd Tor-nication

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    Not sure of your mileage, but this crud doesn't atomize or combust very well.
     
  9. Feb 28, 2014 at 12:47 PM
    #9
    Blackdawg

    Blackdawg Dr. Frankenstein

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    nah he bought it from someone. He didn't let it sit for years. The timing is way off too i guess. He bought it to make it into a 24 hour le mans car for fun.
     
  10. Feb 28, 2014 at 2:15 PM
    #10
    Torspd

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    LeMons *** ;)
     
  11. Feb 28, 2014 at 2:32 PM
    #11
    FreidTaco

    FreidTaco [OP] 'merica

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    Yes we changed the filter before we purchased it. We put heet and fuel injector cleaner in tank before we even dove any place. Now has 600 miles on it with only premium. The other night
    I was messin with the timing on the distributor and noticed that the cap is maxed out to the advanced side. when you retard the timing in runs shittier and this was confirmed by a backfire through intake. What i am guessing that happened was that the cam gears that were in the trunk were replaced and or the belt with it. My guess is that the belt is one cog off (5*) off. and would potentiay prevent the timing from being advanced any more, that is why im guessing it runs decent with high rpm and 1/4 throttle cause that would advance the timing and would have the correct amount of fuel/air mix for a lower rpm but has little power because of little inputs and correct timeing.
     
  12. Feb 28, 2014 at 8:28 PM
    #12
    FreidTaco

    FreidTaco [OP] 'merica

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    [​IMG]


    well thats not good
     
  13. Feb 28, 2014 at 8:42 PM
    #13
    FreidTaco

    FreidTaco [OP] 'merica

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    crank is at 0*TDC and the even cylinder bank is line perfectly......

    the odd bank is fuckin us. off two teeth. hope there is no internal damage
    [​IMG]
     
  14. Feb 28, 2014 at 8:44 PM
    #14
    BamaToy1997

    BamaToy1997 ASE Master Tech Vendor

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    There won't be. Those engines are non-interferance engines.
     
  15. Feb 28, 2014 at 8:45 PM
    #15
    BabyTaco

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    :popcorn: You gonna give me a ride in this POS when you finish?
     
  16. Feb 28, 2014 at 8:49 PM
    #16
    FreidTaco

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    THANK YOU!!!!!!!

    Yes sir, we need to order some belts and various bits, along with some port and polish, and valve clearance double checking.
     
  17. Feb 28, 2014 at 8:56 PM
    #17
    Blackdawg

    Blackdawg Dr. Frankenstein

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    This. You'll be fine.

    Frozen idle pulley haha what happened to my supra too
     
  18. Feb 28, 2014 at 8:58 PM
    #18
    FreidTaco

    FreidTaco [OP] 'merica

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    The shredding indication of that?
     
  19. Feb 28, 2014 at 9:00 PM
    #19
    Blackdawg

    Blackdawg Dr. Frankenstein

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    Yea..haha looks pretty bad. Get a new one of those and best ASAP.
     
  20. Feb 28, 2014 at 9:17 PM
    #20
    FreidTaco

    FreidTaco [OP] 'merica

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    What brand, DAYCO, DNJ ENGINE COMPONENTS, ITM, Gates, Goodyear, acdelco
     
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