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Excessive Pinging

Discussion in '1st Gen. Tacomas (1995-2004)' started by MyTaco, Oct 19, 2008.

  1. Oct 19, 2008 at 3:19 PM
    #1
    MyTaco

    MyTaco [OP] Well-Known Member

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    Have a 94 p/u with a 22r that pings like a SOB. Timing is correct, no check engine light issues. Do these have a knock sensor and if so where would it be?
     
  2. Oct 19, 2008 at 3:43 PM
    #2
    Ridgerunner

    Ridgerunner Well-Known Member

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    I'm guessing that with the age of that beauty and the work it has to do-you have carbon buildup on the pistons which can possibly raise the compression ratio enough to cause detonation. do a search on "Seafoam" I read that stuff works the ping right out! I don't know if that engine had knock sensors yet but Chris 4x4 will be along shortly to button up an answer for you:)
     
  3. Oct 19, 2008 at 3:49 PM
    #3
    MyTaco

    MyTaco [OP] Well-Known Member

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    Lol, yea it's my beater truck with 208k probably up to 11:1 comp but runs fantastic except for pinging like hell...but it stops pinging when I run 100 Octane Trick Unleaded! I'll check out "Seafoam"...thanks
     
  4. Oct 19, 2008 at 3:55 PM
    #4
    Ridgerunner

    Ridgerunner Well-Known Member

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    Sounds like a plan buddy:) if you can clean out a good lot of that carbon and bring down that compression the ol' faithful wil be purring again!!!
     
  5. Oct 19, 2008 at 4:26 PM
    #5
    chris4x4

    chris4x4 With sufficient thrust, pigs fly just fine. Moderator

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    Ridgerunner is correct. If the timeing is set right, pull your plugs and give them a look-see. Then if you can do a pressure test. Odds are you just need to run some sea foam thru it. First, make sure your timeing is set correct. Also, the 94's dont have knock sensors. :)
     
  6. Oct 19, 2008 at 8:14 PM
    #6
    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    getting there....
    seafoam will do a great job of cleaning out all the carbon. also, you may want to run a bottle of techron thru the gas tank to clean the injectors and all, as that will help too.
     
  7. Oct 19, 2008 at 8:18 PM
    #7
    pittim

    pittim mittip

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    Pink slider.
    When you guys run Seafoam, do you only do 1/3 of the bottle into the brake booster, or do you do the 3 differnt parts (brake booster, fuel, and some other part)?
     
  8. Oct 19, 2008 at 8:25 PM
    #8
    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    when i do mine, i'll usually do half in thu the booster, or sometimes a 3rd thru booster, then rest in the gas tank. i dont add it to my oil. half thru the booster worked for me when i first got my truck,since it was running rough, so i did a couple of applications, and it definitely helped with the way the truck ran.
     
  9. Oct 19, 2008 at 8:44 PM
    #9
    MyTaco

    MyTaco [OP] Well-Known Member

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    Thanks all for the help. Is seafoam available locally or an internet item only?
     
  10. Oct 19, 2008 at 8:46 PM
    #10
    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    getting there....
    you can get it cheapest at wal mart...but autozone and most all auto parts store carry it.
     
  11. Oct 19, 2008 at 8:48 PM
    #11
    MyTaco

    MyTaco [OP] Well-Known Member

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    Very cool thanks....tomorrows project!
     
  12. Oct 19, 2008 at 8:50 PM
    #12
    tacomaman06

    tacomaman06 Carolina Alliance: Enforcer

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    no prob man. very easy to do.......but jsut a heads up......directions say to use some in the oil......unless you have alotta sludge build up, or you have really high miles, i wouldnt use it in the oil. it may clean good, but if the mileage is high, it could clean too good around the seals. just a possibility........and with these newer engines, i think with any good oil, its not really needed. now thru the brake booster and in the gas tank....most definitely.:)
     
  13. Oct 19, 2008 at 8:53 PM
    #13
    MyTaco

    MyTaco [OP] Well-Known Member

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    BLHM, Grillcraft grill, painted grill and eyelids. 285/70/17 BFG's on 17x9 Pro Comps 5100's all corners
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