1. Attachments are working again! Check out this thread for more details and to report any other bugs.

172,000 miles on spark plugs...

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by 00-00, May 2, 2014.

  1. 00-00

    00-00 Member

    Joined:
    Oct 15, 2013
    115
    68
    0
    Location:
    s/e idaho
    Vehicle:
    2015 Prius c
    Model:
    Four
    In researching spark plug replacement, I noticed that some had a bit of a challenge unplugging the drivers side plug wiring from the harness. I found it very easy to merely remove the two bolts (10mm socket) that secure the plastic that houses the wiring harness. Now there's no need to unplug--merely lift it out of it's plug hole.
    I bought my Prius used, but from it's records, it appears to have had it's original plugs at 172,000 miles. The old plugs have gaps around .003 to .004 inches wider than it's replacements.
    The car was driving fine, but I'm more comfortable with new plugs, especially after 172,000 miles.
     

    Attached Files:

    #1 00-00, May 2, 2014
    telmo744 and SageBrush like this.
  2. telmo744

    telmo744 HSD fanatic

    Joined:
    Apr 8, 2010
    2,168
    764
    0
    Location:
    Portugal
    Vehicle:
    2010 Prius
    Model:
    N/A
    Awesome.
     
    #2 telmo744, May 2, 2014
  3. Scallywag

    Scallywag Member

    Joined:
    Feb 23, 2013
    107
    22
    0
    Location:
    Columbus, OH
    Vehicle:
    2005 Prius
    Model:
    N/A

    Wow! A bit long for plugs, I'd say. Glad you replaced them, and if I'm not mistaken, your picture indicates that you indeed replaced them with iridium tipped (and DENSO) plugs. Well done.

    I read this thread title thinking it was going to be a question "should I replace them now?" haha
     
    #3 Scallywag, May 2, 2014
    00-00 likes this.
  4. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    54,691
    38,232
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Did they come out without a fight?
     
    #4 Mendel Leisk, May 2, 2014
  5. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,747
    48,962
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    that's a lot of mileage for an '08. it's probably more time related than miles.
     
    #5 bisco, May 2, 2014
  6. 00-00

    00-00 Member

    Joined:
    Oct 15, 2013
    115
    68
    0
    Location:
    s/e idaho
    Vehicle:
    2015 Prius c
    Model:
    Four
    They were a bit tight, but not overly bad. From its records, I believe that the plugs were last pulled at 124,000 miles. (Owner declined to replace them.)
     
    #6 00-00, May 3, 2014
    Mendel Leisk likes this.
  7. bisco

    bisco cookie crumbler

    Joined:
    May 11, 2005
    107,747
    48,962
    0
    Location:
    boston
    Vehicle:
    2012 Prius Plug-in
    Model:
    Plug-in Base
    a lot of them look like brand new at the recommended replacement.
     
    #7 bisco, May 3, 2014
  8. DGESSWIN

    DGESSWIN Junior Member

    Joined:
    Mar 29, 2011
    35
    8
    0
    Location:
    Connecticut
    Vehicle:
    2005 Prius
    Model:
    II
    I have an 06 with 237k that have the original plugs in it. I bought the NGK laser iridium plugs due to there 120km life expectancy. I will be replacing the plugs tomorrow. Wish me luck!
    I love my car! If I set the cruise at 60mph I have driven 200 miles at 56mpg.
     
    #8 DGESSWIN, Jan 8, 2016
  9. Mendel Leisk

    Mendel Leisk Senior Member

    Joined:
    Oct 17, 2010
    54,691
    38,232
    80
    Location:
    Greater Vancouver, British Columbia, Canada
    Vehicle:
    2010 Prius
    Model:
    Touring
    Have you checked you've got the right socket size? Assuming the new plugs are the same size, test on it. 3rd gen is 9/16", that was new for me, was expecting 5/8".

    Yeah, good luck extracting the old ones.
     
    #9 Mendel Leisk, Jan 8, 2016
(You must log in or sign up to post here.)