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Tacoma 4.0L hard to start when warm

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Fike, Jul 15, 2017.

Page 14 of 15
  1. Aug 17, 2017 at 12:50 PM
    #261
    Fike

    #261
    Fike [OP] Well-Known Member

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    Yes, I'm sure the gauge is right. It drops slow, but after an hour it had lost all pressure.
     
    Last edited: Aug 17, 2017
    Fike, Aug 17, 2017
    #261
  2. Aug 17, 2017 at 1:00 PM
    #262
    10MGM

    #262
    10MGM Well-Known Member

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    Fuel system is not that complex and it seems you have covered all the bases. If fuel is not leaking back to tank or on the ground, injector(s) are leaking.
     
    10MGM, Aug 17, 2017
    #262
  3. Aug 17, 2017 at 1:54 PM
    #263
    Fike

    #263
    Fike [OP] Well-Known Member

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    Yup, hopefully I can get some new injectors soon and put this problem to rest
     
    Fike, Aug 17, 2017
    #263
    koditten likes this.
  4. Aug 18, 2017 at 6:06 AM
    #264
    boogie3478

    #264
    boogie3478 Well-Known Member

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    I don't recall culprit being mentioned yet, but what about the crankshaft position sensor?

    upload_2017-8-18_9-6-28.jpg
     
    boogie3478, Aug 18, 2017
    #264
  5. Aug 22, 2017 at 10:06 AM
    #265
    Fike

    #265
    Fike [OP] Well-Known Member

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    So I got around to replacing the injectors I got from 12TRD. I know that I've had hope before only to be crushed, but after putting in the new injectors, I did a fuel pressure test, pressure dropped from 41 to 38 on shutoff, dropped to about 35 after 15 minutes, and then stayed at 35. I left my gauge on for 45 minutes and it was still holding...

    Let the truck sit, and didn't get the long start. So I'm cautiously optimistic that the injectors fixed my issue. I'll keep you guys posted as I use it more.

    Thanks to everyone for your help, I did end up replacing some parts that might not have been messed up, but overall I spent way less money that I would have at a mechanics shop. I also now have some spare parts in my inventory of another issue should arise
     
    Fike, Aug 22, 2017
    #265
    Tex-Tac, mightym, 12TRDTacoma[QUOTED] and 2 others like this.
  6. Aug 22, 2017 at 11:05 AM
    #266
    koditten

    #266
    koditten Well-Known Member

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    Fingers crossed.
     
    koditten, Aug 22, 2017
    #266
  7. Aug 22, 2017 at 1:00 PM
    #267
    Fike

    #267
    Fike [OP] Well-Known Member

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    Started up perfect after sitting for an hour and a half
     
    Fike, Aug 22, 2017
    #267
    12TRDTacoma and boogie3478 like this.
  8. Aug 22, 2017 at 1:14 PM
    #268
    boogie3478

    #268
    boogie3478 Well-Known Member

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    Progress! :D
     
    boogie3478, Aug 22, 2017
    #268
  9. Aug 22, 2017 at 1:19 PM
    #269
    Fike

    #269
    Fike [OP] Well-Known Member

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    I really believe this might have fixed it... But again cautiously optimistic, but my truck consistently had the long start on certain conditions and now it hasn't done it in two startups...
     
    Fike, Aug 22, 2017
    #269
    boogie3478[QUOTED] likes this.
  10. Aug 22, 2017 at 2:46 PM
    #270
    12TRDTacoma

    #270
    12TRDTacoma Powered by Ford, GM, VW, and Mercedes

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    One of the weirdest issues I have ever seen on a Tacoma. Regardless, that is outfuckingstanding news! :D
     
    12TRDTacoma, Aug 22, 2017
    #270
  11. Aug 22, 2017 at 2:56 PM
    #271
    boogie3478

    #271
    boogie3478 Well-Known Member

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    @Fike Got a link to where you purchased your injectors?
     
    boogie3478, Aug 22, 2017
    #271
  12. Aug 22, 2017 at 3:15 PM
    #272
    Fike

    #272
    Fike [OP] Well-Known Member

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    I bought 12 TRDs injectors. I'd post on here and see if someone who has supercharged their taco has a set of oem injectors they aren't using
     
    Fike, Aug 22, 2017
    #272
  13. Aug 23, 2017 at 10:51 AM
    #273
    Fike

    #273
    Fike [OP] Well-Known Member

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    Day 2 and I haven't had the long start again
     
    Fike, Aug 23, 2017
    #273
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  14. Aug 23, 2017 at 11:15 AM
    #274
    koditten

    #274
    koditten Well-Known Member

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    Very nice!
     
    koditten, Aug 23, 2017
    #274
  15. Aug 23, 2017 at 2:56 PM
    #275
    Sandman614

    #275
    Sandman614 Ex-Snarky TWSS elf, Travis #hotsavannahdotcom

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    "solutions" like this bother me. What troubleshooting data pointed to injectors?
     
    Sandman614, Aug 23, 2017
    #275
  16. Aug 23, 2017 at 2:58 PM
    #276
    boogie3478

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    boogie3478 Well-Known Member

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    The previous 14 pages of discussion.
     
    boogie3478, Aug 23, 2017
    #276
    gmc8 likes this.
  17. Aug 23, 2017 at 2:58 PM
    #277
    Sandman614

    #277
    Sandman614 Ex-Snarky TWSS elf, Travis #hotsavannahdotcom

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    Details
     
    Sandman614, Aug 23, 2017
    #277
  18. Aug 23, 2017 at 4:26 PM
    #278
    Fike

    #278
    Fike [OP] Well-Known Member

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    Loss of fuel pressure, if you want details read through, I'm not going to rewrite a synopsis
     
    Fike, Aug 23, 2017
    #278
    boogie3478 and gmc8 like this.
  19. Aug 23, 2017 at 5:41 PM
    #279
    koditten

    #279
    koditten Well-Known Member

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    Didn't you view dripping from one of the injectors with a bore scope as well?
     
    koditten, Aug 23, 2017
    #279
  20. Aug 23, 2017 at 6:07 PM
    #280
    Fike

    #280
    Fike [OP] Well-Known Member

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    No, I couldn't ever see anything with the borescope, when I pulled the rail I saw an injector leak, and I also pressure tested and cleaned them with a contraption made of some fuel hose and a can of carb cleaner. When I put pressure on them I saw one dripping
     
    Fike, Aug 23, 2017
    #280
Page 14 of 15

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