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Thread: Junker turned daily driver.

  1. #226

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    I got to mess with it a little this evening. With vac line disconnected holding it at 2k rpm it barely moved to about 6-7 btdc. On idle it was at 5. With the line hooked up it's at 5* btdc. Holding it @ 2k rpm it was at 30+ btdc. Even after it warmed up really good it still tries to hiccup and backfire thru the carb. I feel like its advancing way too much.

  2. #227

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    Any tips on how to reduce advanced timing?

  3. #228

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    I think you have two problems but let others chime in as well. At 2k rpm i believe you should be seeing more advance from the mechanical advance. Base timing should be 7 degrees, at least on my 89. I believe your mechanical advance may be sticking. 30 seems a bit high for the vacuum advance, especially if your mechanical isn't engaging. When I replaced my distributor this summer, it was listed as working with a ram 50 or starion. The vacuum advance unit that came on the distributor was pulling way too much advance causing all kinds of pinging under light cruise. I had a new vacuum advance unit and I swapped it out and it was fine after that. There were numbers stamped on the arm of the vacuum advance unit. The distributor I believe came with a "12" and the new one I had on the shelf I believe was stamped "10". I'm guessing it's mm of pull, but I'm not sure. Someone on here who knows mitsubishis better than myself may have better technical information than that.
    I would start by disassembling the distributor. Mark the gear with witness marks before pulling it off the shaft so that it goes back on the same way.
    Check the mechanical advance linkage for any binding or scoring. Also, see if there are any numbers stamped on your vacuum unit. I'll see if I can dig mine out in the garage to confirm the numbers.

  4. #229

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    5* is where I've got it to run the best. I'll definitely take a look to see if I can find any numbers stamped on it.

  5. #230

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    I suspect it runs best at 5 degrees because the vacuum is over advancing it. The arm on the one that did not work was stamped 11.5 I measured the travel at 5mm, so i'm not sure what the 11.5 means. Maybe corresponds to a vacuum level to make it actuate? I may pull my distributor tomorrow to replace the distributor drive gear on the cam. I have been meaning to put it in for a little while now. If I do I'll pop off the vacuum unit and see what the numbers are that are stamped on the one that works well.

  6. #231

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    Quote Originally Posted by Giovanni89 View Post
    I suspect it runs best at 5 degrees because the vacuum is over advancing it. The arm on the one that did not work was stamped 11.5 I measured the travel at 5mm, so i'm not sure what the 11.5 means. Maybe corresponds to a vacuum level to make it actuate? I may pull my distributor tomorrow to replace the distributor drive gear on the cam. I have been meaning to put it in for a little while now. If I do I'll pop off the vacuum unit and see what the numbers are that are stamped on the one that works well.
    Is it the counterweights' actual weight in grams?
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  7. #232

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    Click image for larger version. 

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    Not the best shots, but you can see the numbers stamped on the arm. When I installed my new distributor it ran like crap. Check to see if you have any numbers stamped on yours. 11.5 was no good. 10 runs great. Luckily I had the new advance unit sitting on the shelf. I had planned on overhauling the original dizzy, but I had a ton of wear in the mechanical advance that was more trouble than the cost of a new one.

  8. #233

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    Ah, ok. It's not what I thought - it's the servo linkage. Nup, doesn't help. Still haven't got a clue what it translates to...
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  9. #234

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    I will definitely pop mine open to check it.

  10. #235

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    Looks like 11.5 to me. Any suggestions where to find a 10?

  11. #236

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    Mine was from rock auto. Standard Motor Products VC268. About 15 bucks.

  12. #237

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    My next project as soon as I get a free minute to install.

  13. #238

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    Quote Originally Posted by 87junker View Post
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    My next project as soon as I get a free minute to install.
    Say goodbye to overheating...
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  14. #239

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    Only had a little bit of daylight to tinker this evening.

  15. #240

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    Any luck getting your vacuum advance solenoid?

  16. #241

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    It's the next project on my list been cold and nasty and too many other priorities right now. But I will definitely let u know how it goes.

  17. #242

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    https://youtu.be/SF5GuW6QkZc

    https://youtu.be/7r_ml1-x2ik

    Finished wiring up the new electric fan. Everything seems to be working good. Gonna test drive it tomorrow to make sure. Seems to be moving some good air.

  18. #243

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    The old junker did great today. Usually by time I get to the farm (45 min drive) and go to climb the hill it's always running hot when i get to the top. Today it was still normal temp and stayed normal while pulled my brothers jeep Cherokee out of the mud. All without shutting it off to let it cool down. But I did find I'm in need of some rear tow or anchor points for sure.

  19. #244

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    I think you need to upgrade her status from junker to beater

  20. #245

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    Quote Originally Posted by 87junker View Post
    The old junker did great today. Usually by time I get to the farm (45 min drive) and go to climb the hill it's always running hot when i get to the top. Today it was still normal temp and stayed normal while pulled my brothers jeep Cherokee out of the mud. All without shutting it off to let it cool down. But I did find I'm in need of some rear tow or anchor points for sure.
    Your truck is in a woeful state - and it still pulled a Jeep out of trouble... says lot don't it
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  21. #246

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    Quote Originally Posted by geezer101 View Post
    Your truck is in a woeful state - and it still pulled a Jeep out of trouble... says lot don't it

    Its come a long way since I got it.

  22. #247

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    Quote Originally Posted by 87junker View Post
    Its come a long way since I got it.
    ..and it's only now I've noticed you are already on PAGE 10 of your thread
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  23. #248

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    Quote Originally Posted by geezer101 View Post
    ..and it's only now I've noticed you are already on PAGE 10 of your thread

    Well I believe I've jinxed myself..

  24. #249

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    Uh oh?

  25. #250

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    Transmission issues. I hoping it's the throw out bearing. Took it on the interstate since it was running good and a few mile of running 70 it started making a loud chattering noise.

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