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Rod knocking after pulling trailer up steep hill

Discussion in '3rd Gen. Tacomas (2016-2023)' started by silverstr8p, Dec 21, 2023.

  1. May 9, 2024 at 3:36 PM
    #741
    silverstr8p

    silverstr8p [OP] Well-Known Member

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    Before we start putting this motor back together are there any other pictures we should post of the innards that might help others?
     
  2. May 9, 2024 at 3:44 PM
    #742
    Vlady

    Vlady Well-Known Member

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    Could you post a picture of it from old engine if still attached?
    That will definitely mess the timing up.
    Remember 2016-2017 were going to limp mode due to coating issues on the reluctor
     
  3. May 9, 2024 at 3:56 PM
    #743
    Vlady

    Vlady Well-Known Member

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    I think I see what the issue was.
     
  4. May 9, 2024 at 5:24 PM
    #744
    silverstr8p

    silverstr8p [OP] Well-Known Member

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    We're going to try to use the newer reluctor if the older one might have issues, we'll just make sure it aligns with the alignment pin. Both of them look the same as far as we can tell.
     
  5. May 10, 2024 at 6:20 AM
    #745
    TenBeers

    TenBeers Well-Known Member

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    Yeah.
    Man, that would suck if it was the reluctor being off all this time. Kind of an Occam's Razor moment. But, good to finally figure out if that was it. Patiently waiting the next test run.
     
  6. May 10, 2024 at 8:12 AM
    #746
    TireFire

    TireFire Superunknown Member

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    I don’t understand how your secondary timing chains could be off by HALF a tooth? Are they OEM chains or aftermarket?
     
    Chew likes this.
  7. May 10, 2024 at 9:25 AM
    #747
    silverstr8p

    silverstr8p [OP] Well-Known Member

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    If they were off, I think maybe it was one bank was one tooth off from the other bank. We've checked timing several times since re-assembling, so hopefully we're not wrong
     
  8. May 10, 2024 at 10:01 AM
    #748
    Canadian Caber

    Canadian Caber R.I.P Layne Staley 67-2002

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    B.C. Canada, eh
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    I really thought when you purchased that used engine from @Buttskevin21 it would have just been a simple engine swap.
     
    Junkhead, t0p_d0g and Chew like this.
  9. May 10, 2024 at 10:10 AM
    #749
    silverstr8p

    silverstr8p [OP] Well-Known Member

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    It really should've been simple, but I didn't know how finicky the crank/cam sensors could be, and whoever wrenched on it before I got it must not have known either. He said the issue came down to vacuum vs. non-vacuum, which basically is determined by which options package you have (offroad vs sport vs whatever), and he needed non-vacuum. Mine is a sport which needs the vacuum. During his fiddling around somehow the crank reluctor was mis-aligned and it seems the cam timing may have been off, virtually guaranteeing it would've never run right.

    It was hard to catch the crank reluctor because when you put it on an engine stand, the flywheel is very close to the stand plate unless you have long spacers, so you really can't see behind it to the reluctor very well, which is why we didn't check or change it when we got the motor. When we pulled the engine and removed the front cover we noticed that it had already been off at least once, which is another reason we think someone did some wrenching before us.
     
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  10. May 10, 2024 at 10:17 AM
    #750
    Canadian Caber

    Canadian Caber R.I.P Layne Staley 67-2002

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    Thanks for the details. That's too bad though. If anything it's a monumental learning experience I suppose. Hopefully this is the last issue and it's up and running in no time. Just be super careful with the front timing chain cover. Be meticulous and clean very well. Also be careful with the application of the fipg. Don't use too much or not enough.
     
    Last edited: May 10, 2024
  11. May 10, 2024 at 10:20 AM
    #751
    silverstr8p

    silverstr8p [OP] Well-Known Member

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    It's things you wouldn't really know that much about if you worked on old Toyota motors (or other motors) where this stuff isn't so sensitive, so hopefully if anyone gets into 2GR-FKS motors they'll now know what to be careful on, but not to just avoid it because it's scary.

    Somebody has to be the first guy, wish it wasn't me, but hopefully it'll become a good community resource.
     
  12. May 10, 2024 at 10:23 AM
    #752
    Vlady

    Vlady Well-Known Member

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    I wouldn't use fipg. Small working window and greater chances to mess it up.. Permatex is better
     
  13. May 10, 2024 at 10:44 AM
    #753
    TenBeers

    TenBeers Well-Known Member

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    Yeah.
    I found my timing light and dwell meter the other day :anonymous:

    The basic concept is still the same, but with electronic ignition, fuel injection, and VVT there's a lot more to understand on newer motors. But I don't miss adjusting points.
     
  14. May 10, 2024 at 10:51 AM
    #754
    Schlappesepple

    Schlappesepple Well-Known Member

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    That was fun, holding the sun gun in one hand, trying to gently twist adjust the distributor cap, then tightening it down without it moving from the vibration. All while painfully aware of the belts and other moving parts next to your arm.

    I'm only 35, but my friends and I kept buying old POS trucks and boats (with old GM motors) and trying to get them to run right.
     
  15. May 10, 2024 at 11:58 AM
    #755
    silverstr8p

    silverstr8p [OP] Well-Known Member

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    Here's the old crank showing what I think is the alignment ping receptacle for the crank reluctor

    oldcrank.jpg
     
  16. May 10, 2024 at 1:25 PM
    #756
    Buck Henry

    Buck Henry Well-Known Member

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    I had a 72 Super Beetle and replacing distributor points was a fact of life. I got to where I could swap a set of points out on the side of the road and rough time the engine by ear! I would break out the dwelle meter / strobe light when I got home to tweak it to spec. Those were fun days.
     
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  17. May 10, 2024 at 1:47 PM
    #757
    Vlady

    Vlady Well-Known Member

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    Which way the reluctor was installed? Teeth facing towards the engine or out?
     
  18. May 14, 2024 at 7:04 AM
    #758
    silverstr8p

    silverstr8p [OP] Well-Known Member

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    The reluctor seems to only fit one way with the alignment pin.

    We're reassembling front cover and putting engine back in today.

    Is there anything special about installing the oil pump, like does it have to align with timing marks or anything else?
     
  19. May 14, 2024 at 9:00 AM
    #759
    Vlady

    Vlady Well-Known Member

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    upload_2024-5-14_9-0-14.png
     
  20. May 14, 2024 at 9:41 AM
    #760
    silverstr8p

    silverstr8p [OP] Well-Known Member

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    From guy putting it together: It would not go on unless I turned it a certain way. Not sure if it's exactly like this but it went on easy when it did.
     
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