1. Welcome to 4Runners.com!

    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 4Runner discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other 4Runner owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Misfire. Not spark plugs. Any ideas?

Discussion in '5th Gen 4Runners (2010-2024)' started by 2014Black4Runner, Oct 22, 2019.

  1. Oct 22, 2019 at 5:53 AM
    #1
    2014Black4Runner

    2014Black4Runner [OP] New Member

    Joined:
    Oct 22, 2019
    Member:
    #11743
    Messages:
    1
    Been a lurker here for a while. Y'all taught me how to change my own oil and now I need input please.

    Bought my 2014 4runner used in 2015. Was a dealership managers car and maintenance was complete. I've also used the dealer up through the 75k (?) check up, but started to do the basics myself because it took forever and they were really jerks about the 75k.

    I'm at 95K (I do home health for a living, lots of city and country driving) and most recently began experiencing what I call "chugging" and I guess is also deemed misfiring. Especially when I just start it up.

    Spark plugs were changed 2 weekends ago (dealership. my son took it while i was out of town), and though it is better, it still seems to skip? when I'm idling. what else might be going wrong? I appreciate any input, suggestions, or ideas.
     
  2. Oct 22, 2019 at 7:23 AM
    #2
    captsolo

    captsolo New Member

    Joined:
    Jun 2, 2019
    Member:
    #10131
    Messages:
    365
    Gender:
    Male
    First Name:
    Tom
    nassau bahamas
    Vehicle:
    2005 SR5
    You need to find out what cylinder is causing the misfire. Get a good scan tool and plug it in.
    Fuel injector would cause misfire. $20 for one at Amazon.
    Any outside mechanic (not the dealer) with good scan tools can locate the misfire.
    Don't buy a real cheap one.

    I bought a Creader 619 a few yeas ago- but haven't plugged it into 4runner. https://www.amazon.com/LAUNCH-Compu...reader+619&qid=1571755629&s=automotive&sr=1-2

    Is this a V6 4runner? V8?

    I have 150,000 miles on a 2005 SR5 and never had a check engine lite since I bought the car new for $42,000 (cash).

    https://www.amazon.com/BlueDriver-B...rds_browse-bin:2910135011&s=automotive&sr=1-1

    I'm thinking the dealer knew your 2015 had an issue. Probably erased the codes. A good mechanic can tell if they did that to sell it easier.
     
    Last edited: Oct 22, 2019
  3. Oct 22, 2019 at 12:14 PM
    #3
    4x Old Guy

    4x Old Guy New Member

    Joined:
    Aug 2, 2019
    Member:
    #10764
    Messages:
    280
    Gender:
    Male
    Riverside, CA
    Vehicle:
    2019 Silver TRD Off-road Premium
    Big-O Bigfoot A/T tires
    Stick with the OEM brand plugs (but save $ by buying them from somewhere other than the dealer). The engines are designed around the subtleties of a particular plug and a different brand may not work as well (although, any brand will work in a pinch if you’re stuck at the only gas station in Whoknowswhere, NV).

    Code reader is a good “first look” (whether you buy one for yourself or have the parts store check it for you). I bought a good one from Sears several years ago. Best $150 bucks I ever spent (it was actually free because of a $150 promo discount if I opened a store credit card and bought it with that). I’ve used it on 3 different vehicles and it’s identified bad O2 sensors, and malfunctioning smog components.

    For your problem, one of the ignition coils (the gizmos that actually plug onto each spark plug) or their associated wiring could also be questionable.
     
    Last edited: Oct 22, 2019

Products Discussed in

To Top