Page 2 of 2 FirstFirst 12
Results 21 to 30 of 30

Thread: Misfire underload and misfire when cold toyota 3y

  1. #21
    Van Fan
    My Van(s):
    1988 super custom hiace
    Join Date
    Nov 2014
    Location
    Australia
    Posts
    27
    Rep Power
    1

    Re: Misfire underload and misfire when cold toyota 3y

    It's built into the dissy, so I'm guessing it's an igniter. They're about $50 over here, all this maintenance spending is cutting into my camping gear purchases lol.

    To be honest I plan on doing an engine conversion later down the track so I don't want to go to the extent of rebuilding and replacing everything on this engine. Well the things I don't have to at least

  2. #22
    Van Fan
    My Van(s):
    1988 super custom hiace
    Join Date
    Nov 2014
    Location
    Australia
    Posts
    27
    Rep Power
    1

    Re: Misfire underload and misfire when cold toyota 3y

    so I managed to get the specs for the coil so I decided to test it. The secondary side was reading 2k ohms out of spec, I hope this is the culprit. Tim do you think that it could be?

  3. #23
    Administrator timsrv's Avatar
    My Van(s):
    Lots of them
    Join Date
    Jun 2010
    Location
    SW WA ST
    Posts
    6,019
    Rep Power
    10

    Re: Misfire underload and misfire when cold toyota 3y

    These things hardly ever test to be within spec. As a result I quit testing them. If I suspect a coil I just replace it. If the problem persists, then I know it wasn't the coil. Coils are cheap though, so no great loss if that's not it. Tim

  4. #24
    Van Fan
    My Van(s):
    1988 super custom hiace
    Join Date
    Nov 2014
    Location
    Australia
    Posts
    27
    Rep Power
    1

    Re: Misfire underload and misfire when cold toyota 3y

    I was just thinking that if one of the ht leads was faulty, maybe it could've caused the coil to fail. I know it's not greatly out of spec but to my knowledge the resistance obviously increases as the coil warms up.

  5. #25
    Administrator timsrv's Avatar
    My Van(s):
    Lots of them
    Join Date
    Jun 2010
    Location
    SW WA ST
    Posts
    6,019
    Rep Power
    10

    Re: Misfire underload and misfire when cold toyota 3y

    With old cars it's just a good idea to have some "known good" spare parts around............especially the critical ones. If you replace the coil and the problem persists, there are still 2 positives: 1. You now have a "known good" coil in you spare parts kit. 2. You know your problem wasn't the coil. Sometimes troubleshooting is simply the process of elimination. Having extra parts around can save a bunch of time. Once you know a part is bad, throw it away. Nothing worse than having a bad part laying around...........especially if it gets confused with a good one. Tim

  6. #26
    Van Fan
    My Van(s):
    1988 super custom hiace
    Join Date
    Nov 2014
    Location
    Australia
    Posts
    27
    Rep Power
    1

    Re: Misfire underload and misfire when cold toyota 3y

    Instead of just buying one and giving it a go, I'm going to borrow the one off the forklift at work and test it in mine. The only thing is I have to find the right opportunity when my boss isn't there lol

  7. #27
    Administrator timsrv's Avatar
    My Van(s):
    Lots of them
    Join Date
    Jun 2010
    Location
    SW WA ST
    Posts
    6,019
    Rep Power
    10

    Re: Misfire underload and misfire when cold toyota 3y

    Not sure I'd risk my job for the price of a coil...........unless you don't like the job. When I've had the choice to extract one from a parts van (in my back yard) or go to Napa, I chose Napa. Not sure what they cost down under, but here in the US you can get them for under $15 (with free shipping): http://www.ebay.com/itm/NEW-IGNITION...63f563&vxp=mtr

  8. #28
    Van Fan
    My Van(s):
    1988 super custom hiace
    Join Date
    Nov 2014
    Location
    Australia
    Posts
    27
    Rep Power
    1

    Re: Misfire underload and misfire when cold toyota 3y

    I envy how cheap everything is over there. They are $50
    in Australia

  9. #29
    Van Fan
    My Van(s):
    1988 super custom hiace
    Join Date
    Nov 2014
    Location
    Australia
    Posts
    27
    Rep Power
    1

    Re: Misfire underload and misfire when cold toyota 3y

    Okay so my results for the leak down test are that cylinder 2 is at 35% which is just out of range. I also put gas into the cylinder and found that the gas was coming out of cylinder 3 when I put it down cylinder 2. This is making me believe that its a blown headgasket.

    i have a couple of weeks off over xmas so I'll remove the head then

  10. #30
    Forum Newbie
    My Van(s):
    none yet!
    Join Date
    Jan 2015
    Location
    Australia
    Posts
    4
    Rep Power
    0

    Re: Misfire underload and misfire when cold toyota 3y

    Hi all I would be interested to hear about any updates?

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •