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Mechanical help

Discussion in 'Performance' started by 89d16a6, Jul 28, 2019.

  1. Jul 28, 2019 at 7:21 PM
    #1
    89d16a6

    89d16a6 [OP] New Member

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    So i found a 1995 sr5 for sale. The guy I got it from rebuilt the motor. He had the heads rebuilt by a very reputable machinist where I'm from. He did not do it cheap at all. The only thing is it seems like he missed something. It acts like the timing is off. So I checked and sure enough both cams were off by a tooth. I got that set right and put a timing light to it. That helped a little but it's still not running right at idle it sounds fine but under a load it seem like it is missing. Loss of power really bad. Has a really bad raw fuel smell in the exhaust. I'm not sure where to go with it at this point. Any help would be greatly appreciated.
     
  2. Jul 28, 2019 at 7:34 PM
    #2
    aroyalsfan

    aroyalsfan New Member

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    Did you mess with your distributor at all?
     
  3. Jul 28, 2019 at 7:38 PM
    #3
    89d16a6

    89d16a6 [OP] New Member

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    We set the timing using it. New plugs and wires also.
     
  4. Jul 28, 2019 at 7:42 PM
    #4
    aroyalsfan

    aroyalsfan New Member

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    Did you double check plug gaps?
     
  5. Jul 28, 2019 at 7:45 PM
    #5
    aroyalsfan

    aroyalsfan New Member

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    How old is the timing belt?
     
  6. Jul 28, 2019 at 7:58 PM
    #6
    89d16a6

    89d16a6 [OP] New Member

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    Plugs are gapped right. Timing belt has very little miles on it. The guy I bought it from said 350 miles on it. You can still read the part numbers on it.
     
  7. Jul 28, 2019 at 8:27 PM
    #7
    aroyalsfan

    aroyalsfan New Member

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    Hmmm.......well if you think you've got the timing issues figured out. Only other thing there I could think of is a bad or loose pully.

    Any old bad gas in that thing from sitting around a long time? Maybe some heet if there's any water in there. Fuel pump, fuel filter, fuel injectors.....for the hell of it go check all the connections on the injectors. Make sure nothing is loose.
     
  8. Jul 28, 2019 at 8:32 PM
    #8
    89d16a6

    89d16a6 [OP] New Member

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    We are headed to the crank pulley next. The guy that rebuilt it made some pretty stupid mistakes so we are checking all that also. He put new connectors on the fuel injectors so maybe he mixed 2 of then up.
     
  9. Jul 29, 2019 at 6:46 AM
    #9
    aroyalsfan

    aroyalsfan New Member

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    Have you inspected the heads yourself or done a compression check? Not to question the work done by the machine shop you trust, but how he sealed it.
     
  10. Jul 29, 2019 at 1:59 PM
    #10
    4scooter19

    4scooter19 New Member

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    Have you checked that the TPS is adjusted correctly?
     
  11. Jul 31, 2019 at 4:56 AM
    #11
    89d16a6

    89d16a6 [OP] New Member

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    I have checked compression it's good. I have not taken the heads off I was hoping to not have to got that far tell i knew everything else was good. I have never checked the tps it's new I'm not sure why it would need adjusting.
     
  12. Jul 31, 2019 at 8:07 AM
    #12
    4scooter19

    4scooter19 New Member

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    I've had to adjust a new one before on my pickup only reason I brought it up. Had kind of the same symptoms. It idled well but would miss/fall on its face under throttle. The ECU uses TPS values to determine timing for the EFI. Could be out of whack causing the miss. Just an idea. Also vacuum leaks or miss routed lines I've had similar symptoms to yours with leaks as well.
     
  13. Jan 6, 2020 at 1:47 PM
    #13
    89d16a6

    89d16a6 [OP] New Member

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    Still fighting this. I have done the timing. I have replaced plugs. Wires are new. We have adjusted the valves. New tps and its adjusted. We have checked the injectors. It's still running bad. Any advice?
     
  14. Jan 6, 2020 at 2:31 PM
    #14
    MyWyfsRnnr

    MyWyfsRnnr Have you seen the mall?

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    hail mary on this one, are you sure you have ignition on all cylinders? The "Raw fuel" comment caught my interest. Easy way to check is to use a spray bottle/squirt gun and spray exhaust manifold 1 or 2 inches from the head and verify water boils off in roughly the same amount of time. Have you also done a cylinder leak down test. That will tell you the condition of the head job etc. that was done. I will think on this one some more in the mean time....
     
  15. Jan 6, 2020 at 3:03 PM
    #15
    89d16a6

    89d16a6 [OP] New Member

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    It seems to me that cylinder #3 and #5 are the problem. I do believe I have spark. I'm working with a guy that's been a mechanic for 40+ years and hes as stumped as I am.
     
  16. Jan 6, 2020 at 5:23 PM
    #16
    NightOwl

    NightOwl 1985 Toyota 4 Runner DLX 22REC

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    Have you replace the coil? My 85 4 Runner 22REC started missing under load going up hills...I changed the plugs, wires and cap...still did it...I replaced the coil and the miss stopped. A coil is a pretty cheap fix to try...I'd give it a try.
     
  17. Jan 6, 2020 at 5:35 PM
    #17
    89d16a6

    89d16a6 [OP] New Member

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    I did not try the coil but we are pretty sure we have isolated it to cylinder 3 and 5. That would say it's not a coil.
     
  18. Jan 11, 2020 at 5:01 PM
    #18
    89d16a6

    89d16a6 [OP] New Member

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    So some new news. We did a makeshift leakdown test today. When 85psi was put to the cylinder we could hear the air leaking out of the motor. When we move the valve cover we could tell the air noise was coming from within.
     
    MyWyfsRnnr likes this.
  19. Jan 13, 2020 at 7:20 AM
    #19
    MyWyfsRnnr

    MyWyfsRnnr Have you seen the mall?

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    Where was the Air leaking into? Past the rings or past the valves?
     
  20. Jan 13, 2020 at 8:31 AM
    #20
    89d16a6

    89d16a6 [OP] New Member

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    We believe it was coming by the rings. At this point we are planning on buying a short block.
     
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  21. Jan 13, 2020 at 8:44 AM
    #21
    MyWyfsRnnr

    MyWyfsRnnr Have you seen the mall?

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    Sorry man... I feel bad that I suggested the Leak down but that is a really good test. haha. Did the previous owner say the motor was rebuilt or only the heads? It is one of those "Ran when Parked" type of things.
     
  22. Jan 13, 2020 at 8:48 AM
    #22
    89d16a6

    89d16a6 [OP] New Member

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    It is what it is. I bought it from a guy that rebuilt everything but the block. The guy he bought it from said he did the block. It's all good tho. I got the car for cheap and even after the short block I'll only be into it about $4k.
     
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