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

bad cylinder?

Discussion in '4 Cylinder' started by harpolith, Sep 28, 2009.

  1. Sep 28, 2009 at 6:24 PM
    #1
    harpolith

    harpolith [OP] Well-Known Member

    Joined:
    Sep 28, 2009
    Member:
    #23469
    Messages:
    2,200
    Gender:
    Male
    Vehicle:
    2014 SR5 DC 4x4
    i've got a '98 reg. cab 4wd with the 2.7 L 4cyl 170,000 miles. the last few months, i've noticed a loss in power. 2 months ago i had new plugs put in, all new belts, and had the fuel injectors cleaned. they said the old plugs were among the worst they'd ever seen- the little L shaped metal piece on one of the plugs was eaten away to a little point! who knows how long i'd been driving with bad plugs. anyway, about a month ago it started running really rough. especially just after starting and when coming to a stop. and it doesn't sound right when idling. i took it to a toyo dealer and they did a compression test. one of the cylinders is only working at 50%. they wanted 200+ dollars to diagnose and i decided not to put any more money into the truck and get a new one... they said it's probably a cylinder problem and i would be looking at 2000-2500 to fix it. but they didn't know for sure. they also said it sounds like it is misfiring. any thoughts on what might be wrong? could it be an easy fix or am i better off putting the money toward a new one? could the problem be related to the FI cleaning? thanks much for your advice!
     
  2. Sep 28, 2009 at 6:27 PM
    #2
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,857
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
    Could be a bad head gasket or a bad valve.
     
  3. Sep 28, 2009 at 6:31 PM
    #3
    Maxola89

    Maxola89 Active Member

    Joined:
    Sep 23, 2009
    Member:
    #23191
    Messages:
    27
    Gender:
    Male
    First Name:
    Matt
    Norton, VT
    Vehicle:
    2000 Tacoma 4WD Short Bed
    2.7 swap for a 2.4
    i was thinkin the same thing one of the valves are prolly stuck in the open position
     
  4. Sep 28, 2009 at 6:31 PM
    #4
    Monkeysuncle

    Monkeysuncle My Cat's breath Smells like Cat Food

    Joined:
    Aug 27, 2008
    Member:
    #8809
    Messages:
    1,248
    Gender:
    Male
    First Name:
    Kevin
    Florida
    Vehicle:
    99 Tacoma SR5 4x4 5 speed Manual Hubs
    Diff Breather,CB thingy,GPS,Cop Shocks,Cop Breaks, old Man Emu 881's Dakar Leaf Springs and Nitro sport shocks. Deck Plate mod
    compression at 50% = not good. You are running on 3.5 cylinders. Bad or broken piston rings could be a reason. or a valve/head problem, you can do a leak down test to find the reason. Either way not good, good luck
     
  5. Sep 28, 2009 at 6:34 PM
    #5
    Monkeysuncle

    Monkeysuncle My Cat's breath Smells like Cat Food

    Joined:
    Aug 27, 2008
    Member:
    #8809
    Messages:
    1,248
    Gender:
    Male
    First Name:
    Kevin
    Florida
    Vehicle:
    99 Tacoma SR5 4x4 5 speed Manual Hubs
    Diff Breather,CB thingy,GPS,Cop Shocks,Cop Breaks, old Man Emu 881's Dakar Leaf Springs and Nitro sport shocks. Deck Plate mod
  6. Sep 28, 2009 at 6:38 PM
    #6
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,857
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
    A quick way to test the headgasket is to run the truck with the radiator cap off. If you see surging or fluid shooting out of the radiator it is the headgasket.
     
  7. Sep 28, 2009 at 6:39 PM
    #7
    harpolith

    harpolith [OP] Well-Known Member

    Joined:
    Sep 28, 2009
    Member:
    #23469
    Messages:
    2,200
    Gender:
    Male
    Vehicle:
    2014 SR5 DC 4x4
    if it's a valve problem, is that an expensive fix?
     
  8. Sep 28, 2009 at 6:41 PM
    #8
    Maxola89

    Maxola89 Active Member

    Joined:
    Sep 23, 2009
    Member:
    #23191
    Messages:
    27
    Gender:
    Male
    First Name:
    Matt
    Norton, VT
    Vehicle:
    2000 Tacoma 4WD Short Bed
    2.7 swap for a 2.4
    not if you know how to do it yourself
     
  9. Sep 28, 2009 at 6:42 PM
    #9
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,857
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
    Yes, if you don't have the knowledge or access to the tools to do it. It would require the head removed and rebuilt. This would include new springs, valves, seals and gaskets. The head would also need checked for warpage and cracks before new components would be installed.
     
  10. Sep 28, 2009 at 6:45 PM
    #10
    harpolith

    harpolith [OP] Well-Known Member

    Joined:
    Sep 28, 2009
    Member:
    #23469
    Messages:
    2,200
    Gender:
    Male
    Vehicle:
    2014 SR5 DC 4x4
    thanks much for the advice. i wouldn't know where to begin if i did it myself. i think i'm gonna get rid of it. thanks.
     
  11. Sep 28, 2009 at 6:47 PM
    #11
    Monkeysuncle

    Monkeysuncle My Cat's breath Smells like Cat Food

    Joined:
    Aug 27, 2008
    Member:
    #8809
    Messages:
    1,248
    Gender:
    Male
    First Name:
    Kevin
    Florida
    Vehicle:
    99 Tacoma SR5 4x4 5 speed Manual Hubs
    Diff Breather,CB thingy,GPS,Cop Shocks,Cop Breaks, old Man Emu 881's Dakar Leaf Springs and Nitro sport shocks. Deck Plate mod
    on a 4 cyl, especially toyota shouldnt be an arm and a leg I did a 16Valve toyota fx16 (4 cyl 16 valve corolla) and it wasnt out of the question and that was with magnaflux and head resurfacing, i cant remember how much it was, it's been years now.
     
  12. Sep 28, 2009 at 6:54 PM
    #12
    Monkeysuncle

    Monkeysuncle My Cat's breath Smells like Cat Food

    Joined:
    Aug 27, 2008
    Member:
    #8809
    Messages:
    1,248
    Gender:
    Male
    First Name:
    Kevin
    Florida
    Vehicle:
    99 Tacoma SR5 4x4 5 speed Manual Hubs
    Diff Breather,CB thingy,GPS,Cop Shocks,Cop Breaks, old Man Emu 881's Dakar Leaf Springs and Nitro sport shocks. Deck Plate mod
    you have options here, buy a rebuild head, rebuild the one you have, you don't have to replace everything, but it is good to do so. On the 16 valve head, I took it to a shop and found cracks around the valve seats through magna flux, they ground the cracks, welded them , did a valve job and the car was fine. Valves can be reused springs can be to. Just call a machine shop in your area, let them know whats up, at the same time a rebuild head is an option.
     
  13. Sep 28, 2009 at 6:57 PM
    #13
    harpolith

    harpolith [OP] Well-Known Member

    Joined:
    Sep 28, 2009
    Member:
    #23469
    Messages:
    2,200
    Gender:
    Male
    Vehicle:
    2014 SR5 DC 4x4
    maybe i'll take it to a local guy rather than the toyo dealer. might get better price.
     
  14. Sep 28, 2009 at 6:58 PM
    #14
    Maxola89

    Maxola89 Active Member

    Joined:
    Sep 23, 2009
    Member:
    #23191
    Messages:
    27
    Gender:
    Male
    First Name:
    Matt
    Norton, VT
    Vehicle:
    2000 Tacoma 4WD Short Bed
    2.7 swap for a 2.4
    ill take it if it wasnt so far away lol
     
To Top