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Oil Pan Leaking

Discussion in '1st Gen. Tacomas (1995-2004)' started by ctsnow13, Jul 10, 2023.

  1. Jul 10, 2023 at 10:56 AM
    #1
    ctsnow13

    ctsnow13 [OP] Well-Known Member

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    Does the lower section of this oil pan come off from the main bolted on part? I just did a full rebuild and have a small pinhole leak coming from that seam circled in the pictures. I was hoping I could just take that lower section off so I don’t have to drop the differential and replace the oil pan completely.
    IMG_4927.jpg
     
  2. Jul 10, 2023 at 11:15 AM
    #2
    Thad

    Thad Well-Known Member

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    Your screwed. Common place for leaks gotta drop differential to replace pan.
     
  3. Jul 10, 2023 at 11:18 AM
    #3
    ctsnow13

    ctsnow13 [OP] Well-Known Member

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    Not what I wanted to hear.
     
  4. Jul 10, 2023 at 11:23 AM
    #4
    OnHartung'sRoad

    OnHartung'sRoad -So glad I didn't take the other...

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    I’d patch it - lots of good options with adhesives - fuel tank repair kit would do it.
     
  5. Jul 10, 2023 at 11:26 AM
    #5
    ctsnow13

    ctsnow13 [OP] Well-Known Member

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    Oh, I’m considering that. Any that you would recommend?
     
  6. Jul 10, 2023 at 11:29 AM
    #6
    OnHartung'sRoad

    OnHartung'sRoad -So glad I didn't take the other...

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    ctsnow13[OP] likes this.
  7. Jul 10, 2023 at 11:32 AM
    #7
    OnHartung'sRoad

    OnHartung'sRoad -So glad I didn't take the other...

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    First clean the heck out of the repair area with acetone, then scratch it up with rough emory paper or something to give the glue some more bite to the metal, then a final clean with acetone.

    Also drain the oil before cleaning it and let the glue fully cure before refilling it.
     
    Last edited: Jul 10, 2023
    ctsnow13[OP] likes this.
  8. Jul 10, 2023 at 4:18 PM
    #8
    Thad

    Thad Well-Known Member

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    Id stick some fiberglass window screen in the epoxy kinda like rebar. I know there is a epoxy they use on airplane fuel tanks thats supposed to kick a** ! Dunno the name of it though. Good luck and let us know how it goes. Mine is leakin from same spot!
     
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  9. Jul 10, 2023 at 4:24 PM
    #9
    ctsnow13

    ctsnow13 [OP] Well-Known Member

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    I bought some of the JB tank weld and gonna give it a go tonight when once the kids are in bed. I’ll let it cure overnight and see how it looks tomorrow
     
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  10. Jul 12, 2023 at 12:43 PM
    #10
    ctsnow13

    ctsnow13 [OP] Well-Known Member

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    The truck has been filled up all day today and driven a few miles. It hasn’t leaked any so far. Here is the steps I did and it seems to have worked.
    1. Wire wheeled the whole seam
    2. Blew it all off with air compressor
    3. Cleaned with brake cleaner
    4. Hand sanded with 60 grit sandpaper
    5. Cleaned with acetone
    6. Applied two tubes of the JB tank weld and made sure to try and mash it into the seam really well.
    I went ahead ordered an oil pan that I will stick on the shelf and have for when the job needs to be done. For the meantime, it looks like this will work. Hopefully it will make it to the winter and the shop won’t be 100 degrees.
     
    OnHartung'sRoad likes this.
  11. Jul 13, 2023 at 10:32 PM
    #11
    OnHartung'sRoad

    OnHartung'sRoad -So glad I didn't take the other...

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    I’m sure it will last a long time- I had the truck patched up like that for years before I sold it with no leaks. Gas tanks bulge and contract a lot so the glue did really well, plus my patch covered a drill hole- much larger than yours.
     
    Last edited: Jul 15, 2023
  12. Jul 17, 2023 at 3:55 PM
    #12
    Thad

    Thad Well-Known Member

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    Im rooting for ya!
     
  13. Jul 18, 2023 at 7:21 AM
    #13
    jabberjawmash

    jabberjawmash Well-Known Member

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    That was a fun one to learn..
     
  14. Aug 11, 2023 at 8:49 AM
    #14
    Thad

    Thad Well-Known Member

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    Ok, I just got done doing the same repair. Drained oil for 2 days. Wire wheeled the whole frickin seam which was all rust. found an actual pin hole i stuck a sheet metal screw with rubber washer in. Cleaned the heck outas everything with degreaser and hand sanded all the rust off with 80 grit emery. Mixed up some quick setting JB weld and brushed it on while creating a vacuum with shop vac on drain hole to try to suck it in seam. Then covered everything with JB steel stick and painted chassis black. I`ll keep everybody posted on my luck with this repair also.
     
  15. Aug 11, 2023 at 8:55 AM
    #15
    ctsnow13

    ctsnow13 [OP] Well-Known Member

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    I’ve gone 500 miles with mine and it has t leaked a drop.
     
  16. Aug 12, 2023 at 6:42 PM
    #16
    treyus30

    treyus30 cntl-y

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    Aren't these steel? Nobody nearby can weld?
     
  17. Aug 14, 2023 at 12:35 PM
    #17
    Thad

    Thad Well-Known Member

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    two piece pan welded seam that rots out. Only way to weld would be removal of pan and at that point it would be foolish.
     
  18. Aug 14, 2023 at 1:46 PM
    #18
    redneck_adjacent

    redneck_adjacent Well-Known Member

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    Temporary fixes pile up into mechanical tech-debt. When you decide to sell or overhaul your truck, that tech-debt can be a real problem. That being said, I know it's a real pain because the front differential will need to be dropped but you should replace the oil pan. Do it the right way. When I run into these problems, I try to see them as an opportunity to service other nearby or related components, and I try to remember that I am saving myself future headache.
     
  19. Aug 14, 2023 at 2:48 PM
    #19
    ctsnow13

    ctsnow13 [OP] Well-Known Member

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    Mine is a temporary fix until winter when I can pull it into the shop when it’s not 110 degrees. The spare pan is already on the shelf. Gonna drop the differential and replace both cv axles while I’m in there. It is worth $10 and 30 minutes of prep work to not have to do the whole job in the middle of the summer.
     
  20. Aug 14, 2023 at 3:47 PM
    #20
    redneck_adjacent

    redneck_adjacent Well-Known Member

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    That makes sense, and that is what I would do, too. I hope my earlier response did not sound condescending; it was intended to be encouraging :)

    Good luck!
     
    ctsnow13[QUOTED][OP] likes this.

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