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2015 4Runner Engine Knock

Discussion in '5th Gen 4Runners (2010+)' started by Cdaily98, May 11, 2019.

  1. May 11, 2019 at 7:07 AM
    #1
    Cdaily98

    Cdaily98 [OP] New Member

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    I recently purchased a 2015 4Runner that has developed a significant engine knock. It can be heard in the cab when your in the driver seat and in the wheel well driver side. Any advice on what it might be? I get the light Toyo tick but the louder metallic sound seems out of the norm.
     
  2. May 11, 2019 at 5:13 PM
    #2
    j cat

    j cat New Member

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    spacer lift front 1inch

    sounds like lifter tick .. all lifters.. engine knock is lower freq ... cluck sound ..
    what oil used ? 0-20wt synthetic is proper . also if the oil has some sludge try to add 5OZ of MMO .. marvel mystery oil in the oil .. only use 5OZ.. if the ticking is reduced then change the oil should be good.. if no change can be engine / cam / oil pressure problem .. engine damage .
     
  3. May 12, 2019 at 5:59 AM
    #3
    Cdaily98

    Cdaily98 [OP] New Member

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    Using the specd oil, had Toyota do an oils check just to if it would help and it didn’t. Added Lucas Oil additive and seafoam, didnt help.

    If it’s an oil pressure issue wouldn’t the pressure sensor trip?
     
  4. May 13, 2019 at 5:43 AM
    #4
    j cat

    j cat New Member

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    the oil sensor is a switch .. no pressure light comes on.. low oil pressure can cause the noise.

    what oil did you use ? name viscosity and who installed the oil .. toyota oil filter ?
    IMO do not use seafoam in the engine oil .. that will damage the engine internals ... MMO is a additive that increases the detergents and breaks down any sludge and lifter debris ,, seafoam is a solvent .. not an oil detergent ..

    I would change the oil and filter see how the engine operates .. oil drain takes 45 min .. then if it still makes the ticking add 5OZ of MMO to the oil and drive it for a few hundred miles .. if no change then internal damage. cam /lifters etc..
     
  5. Aug 6, 2019 at 4:10 PM
    #5
    kami

    kami New Member

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    I have this exact same noise. I've been looking for answers for the last year. It started at about 30k and I'm now at 60k. 2 separate dealerships have told me it's completely normal and there's nothing to worry about... That said, I've done a ton of listening and think it's most pronounced from the catalytic converter on the driver's side.
     
  6. Aug 6, 2019 at 5:00 PM
    #6
    Hyper15125

    Hyper15125 Headlight Retrofitting Hobbyist

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    Sounds normal to me. Sounds like my 4R and my Taco
     
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  7. Aug 6, 2019 at 5:31 PM
    #7
    MeefZah

    MeefZah Curmudgeonly

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    I don't know... it seems louder and more harsh than the standard engine tick. Although it is always hard to really hear those noises on video.

    OP, the engine is normally quite noisy; I think your best bet is to find a couple guys near you with 4Rs, or go take another 4R for a test drive, and compare what you are hearing with their engine noises. If yours is significantly different then I'd go from there.
     
  8. Aug 6, 2019 at 5:37 PM
    #8
    Hyper15125

    Hyper15125 Headlight Retrofitting Hobbyist

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    Sounds like good advice.
     
  9. Aug 7, 2019 at 2:27 AM
    #9
    kami

    kami New Member

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    ^This. The last dealership even pulled up a brand new one just to show me that it was completely normal... They sounded exactly, 100% nothing alike. The mechanics just looked at me like I was insane. Maybe I am. :turtleride:

    This is mine BTW. Sounds the same as yours, but I would still argue, not normal

    https://www.youtube.com/watch?time_continue=3&v=dpUhyqTt-LA
     
    Last edited: Aug 7, 2019
  10. Aug 7, 2019 at 4:14 AM
    #10
    Benny123

    Benny123 Toyota enthusiast

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    Sounds like my rig. Normal 1-GRFE noise. Note the mic may be amplifying a bit.
     
    j cat likes this.
  11. Aug 7, 2019 at 5:05 AM
    #11
    kami

    kami New Member

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    The mic is actually muffling it. It's quite noticeable outside the car. If it sounds normal to others, I'll buy that. Just weird that it didn' start until around 32,000.
     
    toy33 likes this.
  12. Aug 7, 2019 at 6:33 AM
    #12
    aroyalsfan

    aroyalsfan New Member

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    Maybe I'm just being dumb.....but has anyone checked the engine mounts that have looked it over for you? If that thing spent any prolonged period of time parked the wrong way on an incline it could of weakend them and the knock could just actually be a very slight bounce or vibration. It's happened to my last two vehicles which is the only reason I bring it up.
     
    Last edited: Aug 7, 2019
  13. Aug 7, 2019 at 7:52 AM
    #13
    toy33

    toy33 New Member

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    Yours sounds similar to this video. Hope it's not piston slap.

     
  14. Aug 7, 2019 at 8:51 AM
    #14
    DGP1961

    DGP1961 New Member

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    I dunno I'm not a mechanic and also tough over the computer but I'm also going with normal. If anything I'm thinking maybe it resembles like a pulley/belt noise?
     

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