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Thread: Smog due MM 1990 2.3 L Help

  1. #1

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    Chino Ca.
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    1990 Mitsubishi Mighty Max
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    4G64

    Question Smog due MM 1990 2.3 L Help

    Hello Everyone,

    I'm due for a Smog check in California in the next couple of days and I want it to pass!

    I have a MM 1990 4 cylinder 2.3 liter.

    I going to give it a tune up I'm going to change out the Spark plugs, Spark plug Wires, the PCV, Air Filter, Distributor cap, use Chevron Fuel System Cleaner and give it a Oil change.

    Do you any more suggestions that I might of missed please let me know?

    Thanks,

    Also this MM hasn't been driving much till lately it Run Great but every once and a while it smoke a little then it goes away I wonder why it does that.

    One more thing it just crossed the 100 thousand mile mark a couple of days ago and the Maintenance Require light came On is there a way to reset that?

    Thanks for your help

    Robinhood

  2. #2

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    New Bern, NC
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    1994 Mitsubishi Mighty Max
    Engine

    4G64
    First Which engine is it? The only 2.3 in these trucks is a diesel that doesn't require plugs and wires. Also what color is the smoke every now and then? Also I didn't know these trucks had a maintenance light. Theyre a little old for that.

  3. #3

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    1990 Mitsubishi Mighty Max
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    Sorry I don't know why I was thinking 2.3 liter, my MM is a 1990 4 cylinder gasoline engine model 4G64 I believe it's a 2.4 liter.

    It's only been running constantly the last couple of months and it runs Great but I'm up for a smog check.

    I'm thinking it will pass if I give it a Good Tune Up.

    Thanks in Advance for the Tips

    Robinhood

  4. #4

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    Also when the mileage counter turned 100k a week ago the Maintenance Required Light turned on is there a way to reset it?

    Thanks,

    RobinHood

  5. #5



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    Vacaville, CA
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    1989 Mitsubishi Mighty Max
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    4G63-T
    Fuel filter too, its back on the side of the gas tank. To reset the light on the exact opposite side of the steerjng wheel where the hazards are is a plastic cover, pop it off and there is a tiny switch in there to flip
    Josh
    09 BMW 335i E92 Twin turbo
    89 Macrocab 4g63 Turbo swapped & Bagged: Build Thread

  6. #6

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    1990 Mitsubishi Mighty Max
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    4G64
    Thanks Josh,

    I just had the Fuel Filter Replace about 3 months ago when my Fuel pump went out.

    Thanks for the rest info, I know if the check engine light is on during a smog test in California it's an automatic Fail even if everything else passes during the smog test.

    I know it says maint required but think these test dude will read it as check engine light.

    Thanks,

    Robinhood

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