1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Misfire after changing spark plugs! :(

Discussion in '2nd Gen. Tacomas' started by Hiatt1991, Jan 19, 2011.

  1. Jan 19, 2011 at 10:13 PM
    #1
    Hiatt1991

    Hiatt1991 [OP] Well-Known Member

    Joined:
    Aug 19, 2010
    Member:
    #41917
    Messages:
    8,223
    Gender:
    Male
    First Name:
    Hiatt
    Flagstaff, AZ
    Vehicle:
    2005 Tacoma Prerunner SR5 TRD offroad
    4" Bodylift 12" Offroad shock spacers Turbo Encabulator
    Ok Ive got a question for those who are savvy. I have a 2005 v6 TRD automatic trans.

    Ok.When I accelerate it seams to misfire above two thousand RPMs. This is extremely apparent when I drive up hills slowely. I have replaced my air filter, cleaned my throttle body, cleaned my MAF with MAF cleaner, and have changed my spark plugs. The problem started after I changed the plugs. I gaped them properly. They are Champion plugs. I did some reading and heard that this could be a vuccum leak, a blown head gasket, or bad wires. I cant hear any vacuum leaks, I seriously doubt its my head gasket because I don't drive it too hard, and my wires looked fine. I checked the connections. Even if it were my plugs, why would they only not decide to work at 2k rpms?

    Ideas?
     
  2. Jan 19, 2011 at 10:15 PM
    #2
    707tothe907

    707tothe907 Superior Member

    Joined:
    Oct 28, 2010
    Member:
    #45372
    Messages:
    2,723
    Gender:
    Male
    First Name:
    Jake
    Chico NorCal
    Vehicle:
    05 DCSB Off Road
    Put the wires on wrong?
     
  3. Jan 19, 2011 at 10:18 PM
    #3
    Hiatt1991

    Hiatt1991 [OP] Well-Known Member

    Joined:
    Aug 19, 2010
    Member:
    #41917
    Messages:
    8,223
    Gender:
    Male
    First Name:
    Hiatt
    Flagstaff, AZ
    Vehicle:
    2005 Tacoma Prerunner SR5 TRD offroad
    4" Bodylift 12" Offroad shock spacers Turbo Encabulator
    nope. The wires are exactly as they should be. I dont even think its possible to put them on wrong as they dont reach too far from the plug
     
  4. Jan 19, 2011 at 10:28 PM
    #4
    Hiatt1991

    Hiatt1991 [OP] Well-Known Member

    Joined:
    Aug 19, 2010
    Member:
    #41917
    Messages:
    8,223
    Gender:
    Male
    First Name:
    Hiatt
    Flagstaff, AZ
    Vehicle:
    2005 Tacoma Prerunner SR5 TRD offroad
    4" Bodylift 12" Offroad shock spacers Turbo Encabulator
    Anybody have any ideas?
     
  5. Jan 19, 2011 at 10:30 PM
    #5
    IDave

    IDave Member

    Joined:
    Nov 15, 2010
    Member:
    #46225
    Messages:
    9
    Gender:
    Male
    Vehicle:
    2011 4.0 Off Road DC Auto
    No check engine light?

    Because, well, there should be.
     
  6. Jan 19, 2011 at 10:34 PM
    #6
    island808

    island808 Me l've got brains.

    Joined:
    Oct 9, 2010
    Member:
    #44414
    Messages:
    1,896
    Gender:
    Male
    First Name:
    Jedediah
    hawaii
    Vehicle:
    '10 6speed 4x4 access cab
    Didn't wash off your engine did you?
    Had a misfire once when I "gunked" and sprayed off my engine and some water infiltrated one of the coils. Ran fine at idle but under load would misfire. Took it apart and hit the coils with a hair dryer and it worked fine.
     
  7. Jan 19, 2011 at 11:13 PM
    #7
    Eman5pt0

    Eman5pt0 Well-Known Member

    Joined:
    Sep 19, 2009
    Member:
    #23003
    Messages:
    332
    Gender:
    Male
    First Name:
    E
    NY
    distributor cap? rotor ?
    otherwise i would say double check the and make sure the wires aren't crossed, if you know the plugs are gaped right i wouldn't bother checking them but it wont hurt the pull and check them
     
  8. Jan 19, 2011 at 11:51 PM
    #8
    2010Tacoma4x4

    2010Tacoma4x4 "Man Ho"

    Joined:
    Jan 19, 2011
    Member:
    #49556
    Messages:
    642
    Gender:
    Male
    First Name:
    Dave
    Jacksonville, Fl
    Vehicle:
    2010 4x4 SR5
    Tinted windows, Bug deflector, Rain guards, Bed mat, Rear leaf TSB, Bilsteins front & rear (front set @ 1.75), 16x8 chrome Helo wheels, Toyo open country AT P265/75/R16 tires. CBI bolt on sliders. BSP color matched M1 Satoshi grill. BHLM. UWS low profile black powder coat crosover truckbox. Pioneer DVD/CD head unit - 4 channel amp - front mids & highs - 8" sub box.
    Is it possible that you could have damaged one of your plug wires? Were they difficult to pull off when you changed the plugs? If you had to pull hard on the wire it may have torn loose inside the boot causing center lead not to have a good connection to the terminal. Don't know if that's the problem but I would inspect each wire to make sure.
     
  9. Jan 20, 2011 at 12:04 AM
    #9
    AvsFanTRD

    AvsFanTRD Oh gravity, thou art a heartless bitch!

    Joined:
    Aug 6, 2009
    Member:
    #20761
    Messages:
    3,284
    Gender:
    Male
    First Name:
    Brandon
    Wyoming
    Vehicle:
    2008 TRD Off Road Black
    rear suspension TSB, sockmonkey bed decals, weathertech floor liners, TRD seat covers, tailgate pop n lock, rear diff breather relocation, center console lock, Viper Alarm, extra D-rings in bed, 5100's on all 4 corners
    What leads you believe it is a missfire? What exactly is happening? If that is what is happening your check engine light will come on and then you will be able to find out which plug it is for sure.
     
  10. Jan 20, 2011 at 12:05 AM
    #10
    island808

    island808 Me l've got brains.

    Joined:
    Oct 9, 2010
    Member:
    #44414
    Messages:
    1,896
    Gender:
    Male
    First Name:
    Jedediah
    hawaii
    Vehicle:
    '10 6speed 4x4 access cab
    DOes this car have a distributor cap and rotor?
     
  11. Jan 20, 2011 at 12:08 AM
    #11
    Series1000

    Series1000 Gots a Taco!

    Joined:
    Nov 21, 2009
    Member:
    #26287
    Messages:
    309
    Gender:
    Male
    Vancouver Canada
    Vehicle:
    2007 Access Cab 4X4 4.0L
    3" Redi-lift (spacer lift) up front
    nope ;)
    Check to make sure all the coils are plugged in
     
  12. Jan 20, 2011 at 12:17 AM
    #12
    spark4

    spark4 Well-Known Member

    Joined:
    Feb 27, 2008
    Member:
    #4989
    Messages:
    102
    Gender:
    Male
    Orange County, CA
    Vehicle:
    09' 4x4 Dbl. Cab TRD Sport
    Dunno if this is related but I changed the plugs and air filter on my gf solara this past weekend. I undid the black wire off the battery and reconnected when finished. It ran like shit. Wouldn't hold idle. I had to drive with two feet to the dealership down the street, one foot to operate brake and the other to hold a little bit of an idle so it wouldn't die. It not as easy as it sounds. Anyways, I pull into the toyota dealership and I tell him I changed the plugs and filter and he asks me if i disconnected the black wire off the battery, I say yes. He says good. You just need to drive it around for a bit. Something about the computer relearning after the plugs and air filter. I took his advice and drove around for like 15 min and it eventually got better and runs great now. Dunno if you have the same issue but maybe its something similar for you.
     
  13. Jan 20, 2011 at 12:20 AM
    #13
    Tacomanator

    Tacomanator Boiling denim and bangin whores

    Joined:
    Jul 25, 2010
    Member:
    #40746
    Messages:
    4,580
    Gender:
    Male
    First Name:
    Clam Slammer
    Here
    King 2.5" extended travel coilovers with compression adjusters, Camburg UCA's, King 2.5" rear shocks, Volant cold air intake with ram air scoop.
    i just changed mine today. i didnt remove the negative cable and everything runs great so far (knock on wood)
     
  14. Jan 20, 2011 at 12:26 AM
    #14
    spark4

    spark4 Well-Known Member

    Joined:
    Feb 27, 2008
    Member:
    #4989
    Messages:
    102
    Gender:
    Male
    Orange County, CA
    Vehicle:
    09' 4x4 Dbl. Cab TRD Sport
    Ya I did mine on my buddy's truck the weekend before with no problems so i figured her 4 banger solara would be just as easy. Murphy's law I guess.
     
  15. Jan 20, 2011 at 5:10 AM
    #15
    House Doc

    House Doc Active Member

    Joined:
    Aug 5, 2010
    Member:
    #41254
    Messages:
    42
    Gender:
    Male
    Check it at night and also try misting some water from a spray bottle. Look for arc's to engine or a ground source. It could also be a defective new plug.
     
  16. Jan 20, 2011 at 5:15 AM
    #16
    98tacoma27

    98tacoma27 :POOPCORN: Thor

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    48,249
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5, 88 SR5 PU, 98 TRD OR (CRUSHED)
    5100's all on fours
    Get rid of those champions and get NGK's.
     
  17. Jan 20, 2011 at 5:17 AM
    #17
    Tacologist

    Tacologist Well-Known Member

    Joined:
    Nov 21, 2010
    Member:
    #46495
    Messages:
    171
    Gender:
    Male
    First Name:
    Bob
    Tenessee
    Vehicle:
    05 Double Cab Shortbed
    Rear leaf suspension. Home done tailgate re-inforcement.
    I got a great deal on a motorcycle once because a new spark plug, out of the box, was bad.
     
  18. Jan 20, 2011 at 5:23 AM
    #18
    shawnd2

    shawnd2 Well-Known Member

    Joined:
    Aug 12, 2008
    Member:
    #8497
    Messages:
    526
    Gender:
    Male
    First Name:
    Shawn
    Toronto, Ontario, Canada
    Vehicle:
    08 Tacoma Access Cab 4x4 TRD Offroad
    Same here. I got a good deal on a camry because it was running terrible, turned out the plugs were just changed and one was bad.

    Shawn
     
  19. Jan 20, 2011 at 5:25 AM
    #19
    sloppyjoe

    sloppyjoe They are more like guide lines.

    Joined:
    Aug 10, 2010
    Member:
    #41487
    Messages:
    315
    Gender:
    Male
    All Over
    Vehicle:
    Silver and simple
    Non

    Nope..
     
  20. Jan 20, 2011 at 5:37 AM
    #20
    Alby9999

    Alby9999 Well-Known Member

    Joined:
    Jul 19, 2010
    Member:
    #40406
    Messages:
    169
    Gender:
    Male
    First Name:
    Alby
    NNJ
    Vehicle:
    07 AC TRD OR Impulse Red
    TRD Cat back exhaust 3" FR lift-AAL CAI-Ram air D rings Tail gate theft mod 4x4 illumination switch mod Redline hood struts Fogs on any time mod diff breather relocation mod 886 reverse light mod Wet Okole Avid weld on sliders LR UCAs Locker mod 115 in cab outlet 400w anytime
    OBD2 scan test will tell you. After changing my plugs I had a misfire. My ECL didn't come on but my Ultra gauge had a pending error code of P0302. P030X is misfire and X is the cylinder. Replaced number 2 plug and ran perfect.
     
To Top