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2009 V6 (1GR-FE) started knocking

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Plasmech, Oct 4, 2021.

  1. Oct 4, 2021 at 6:20 PM
    #1
    Plasmech

    Plasmech [OP] Well-Known Member

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    The 1GR-FE in my 2009 Access Cab SR5 TRD Off-Road started knocking under moderate load. I notice it if, for example, I'm climbing a hill (on-road) and get behind in the throttle application a little bit and have to play catch up. If I had to pick an RPM, I'd say it happens around 1,750. I run 87 octane fuel and the truck is well maintained.

    It's not a crazy amount of knocking, but enough that I started to take notice.

    Any ideas?

    Thanks.
     
    tacotoe likes this.
  2. Oct 4, 2021 at 6:29 PM
    #2
    vtown

    vtown Well-Known Member

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    How old are the plugs? Ive noticed ping when the plugs are overdue.
     
  3. Oct 4, 2021 at 6:34 PM
    #3
    Plasmech

    Plasmech [OP] Well-Known Member

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    Uh...original. 114k.
     
  4. Oct 4, 2021 at 6:37 PM
    #4
    vtown

    vtown Well-Known Member

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    Uhhhh...I think they're meant to be like 30K :rofl:

    Get some new OEMs in there stat.
     
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  5. Oct 4, 2021 at 6:39 PM
    #5
    Plasmech

    Plasmech [OP] Well-Known Member

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    Well, they are Densos.

    Shit, totally forgot about the plugs.

    What about the wires?
     
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  6. Oct 4, 2021 at 6:44 PM
    #6
    vtown

    vtown Well-Known Member

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    I'm at 135K on the original wires. They're probably fine. whatever you do don't put in autozone wires and the bullshit iriduium multi-point bullshit snake oil plugs. Papa toyota knows best.
     
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  7. Oct 4, 2021 at 6:46 PM
    #7
    Plasmech

    Plasmech [OP] Well-Known Member

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    I only use OEM parts in my Yotas. I’m a douchebag (in a good way) like that.
     
    vtown likes this.
  8. Oct 4, 2021 at 6:48 PM
    #8
    Dm93

    Dm93 Test Don't Guess

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    No wires only coil boots, if they are in good condition put some dielectric grease on them and you should be good.
    Make sure to check for oil in the spark plug tubes while your there, if oil is present you will need to do valve cover gaskets soon.
     
    BMOW71, TnShooter and vtown like this.
  9. Oct 4, 2021 at 6:48 PM
    #9
    TnShooter

    TnShooter Well-Known Member

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    There really aren’t any wires. It’s a Coil on Plug system. I’d just do the plugs. My advice is -Stick to OEM plugs.
     
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  10. Oct 4, 2021 at 6:52 PM
    #10
    Dm93

    Dm93 Test Don't Guess

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  11. Oct 5, 2021 at 4:01 PM
    #11
    Plasmech

    Plasmech [OP] Well-Known Member

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    Thanks for the replies.

    Do I need to be wary of the 13-year-old factory plugs being seized in the heads?
     
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  12. Oct 5, 2021 at 4:05 PM
    #12
    winkel

    winkel Well-Known Member

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    Maybe...IF they are coming out HARD, loosen them a quarter of a turn, spray a bunch of WD-40 down the holes and let them sit for a couple of hours. Then try loosening them.
    Only do this when the engine is cold, like after it's been sitting all night.
     
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  13. Oct 5, 2021 at 5:04 PM
    #13
    ARB1977

    ARB1977 It’s a beaut Clark

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    Well maintained huh…plugs are the heart of the engine. It’s more than oil changes my friend. While it’s a part clean the throttle body. Hit mass airflow sensor with mass airflow cleaner. A new air filter and you should be good to go.
     
  14. Oct 9, 2021 at 4:57 AM
    #14
    Plasmech

    Plasmech [OP] Well-Known Member

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    Picking up new K20HR-U11s today.

    Not directly related:

    What is the compression ratio of the 1GR-FE and do I remember something about 89 octane being the nominal fuel with 87 being “acceptable”?

    Thanks.
     
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  15. Oct 9, 2021 at 5:02 AM
    #15
    tacotoe

    tacotoe Pastry Chef

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    :eek:
     
  16. Oct 9, 2021 at 5:13 AM
    #16
    tacotoe

    tacotoe Pastry Chef

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    Like already mentioned, just make sure the engine is completely cooled down. I think the overnight first thing in the morning is my favorite approach.
    I used a small brush and put a little never seize on the threads of the new plugs but guess it's not really necessary.
     
  17. Oct 9, 2021 at 5:32 AM
    #17
    tacotoe

    tacotoe Pastry Chef

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    I should check records and see how long ago I replaced the plugs in my wifes 2013. Not long ago....earlier this year:confused:
    It's not a difficult job, iirc remove a metal bracket on the driver's side then loosen the air filter housing and move it out of the way...after the engine cover, one bolt for each coil and easy to disconnect wires to the coil. The plugs didn't need much if any gap changed, but just check them.
     
  18. Oct 12, 2021 at 3:40 PM
    #18
    Plasmech

    Plasmech [OP] Well-Known Member

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    Got it, thanks.

    Did the factory apply anti-seize, I wonder?
     
  19. Oct 12, 2021 at 3:45 PM
    #19
    tacotoe

    tacotoe Pastry Chef

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    I think the plating on the plugs so it's not required. Uh, there was another post somewhere on TW and I think they had actual verbiage from mfgr that it wasn't needed. I put a little bit on there anyway. Just light coat with acid brush. Like for soldering paste.
     
  20. Oct 12, 2021 at 3:55 PM
    #20
    tacotoe

    tacotoe Pastry Chef

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    Here's a couple things I just screenshot from NGK and from Denso goggle itScreenshot_20211012-175105_Google.jpg Screenshot_20211012-175248_Chrome.jpg
     
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