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Thread: failed smog

  1. #101
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    Quote Originally Posted by glockworks21 View Post
    pic
    The catalytic convertor can only reduce HO. NOX is because of incomplete combustion. Do a compression test and adjust the valves.
    David Teitelbaum

  2. #102
    Senior Member glockworks21's Avatar
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    Quote Originally Posted by David T View Post
    The catalytic convertor can only reduce HO. NOX is because of incomplete combustion. Do a compression test and adjust the valves.
    thank you dave. I will try and learn how to do this ..

  3. #103
    Senior Member 82DMC12's Avatar
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    Quote Originally Posted by glockworks21 View Post
    thank you dave. I will try and learn how to do this ..
    Ha well if you managed to do a head gasket, you can definitely manage a valve adjustment!
    Andy Lien

    VIN 11596 Jan 1982 build - owned since Nov. 2000!
    Total frame-off restoration completed 2021-2023

    Photography and Backpacking is life.

    Was Fargo, ND
    Now Kansas City

  4. #104
    Senior Member 82DMC12's Avatar
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    Testing compression is almost as easy as changing spark plugs.

    1. Remove all the spark plugs
    2. Disconnect coil wire from coil
    3. pull up on the inertia switch plunger so the fuel pump won't run
    4. screw in the tester into one of the spark plug holes. It barely has to be snug in the threads, finger tight is good
    5. Get in the car and open the throttle, turn the key, let the starter crank 5 or 6 times. Turn off key.
    6. Check the tester gauge. Write down the number it says.
    7. Relieve the pressure in the gauge using the little spring button and move the gauge to the next cylinder. Repeat for all 6 cylinders, keeping track of which reading was for which cylinder.

    Good engine should show over 140 PSI on all six cylinders, and all within maybe 10 PSI of each other.

    here are my readings last time I did it.

    PXL_20230609_002140692.jpg
    Andy Lien

    VIN 11596 Jan 1982 build - owned since Nov. 2000!
    Total frame-off restoration completed 2021-2023

    Photography and Backpacking is life.

    Was Fargo, ND
    Now Kansas City

  5. #105
    Senior Member glockworks21's Avatar
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    thank you Andy and Dave. I ordered compression tester. should have some answers in next day or two.


    I still think it would have been easier to just move....



    Dave..

  6. #106
    Senior Member glockworks21's Avatar
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    compression test

    would i still need to adjust valves based on this?
    Attached Images

  7. #107
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    Quote Originally Posted by glockworks21 View Post
    would i still need to adjust valves based on this?
    You should adjust the valves and then do a compression test. Since you already did one now you can compare the before and after. I forgot to also mention you should check the timing and the vacuum and mechanical advance.
    David Teitelbaum

  8. #108
    Senior Member glockworks21's Avatar
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    Quote Originally Posted by David T View Post
    You should adjust the valves and then do a compression test. Since you already did one now you can compare the before and after. I forgot to also mention you should check the timing and the vacuum and mechanical advance.
    I found a smoking gun today...


    I will re test on tuesday and update!

  9. #109
    Senior Member 82DMC12's Avatar
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    Quote Originally Posted by glockworks21 View Post
    I found a smoking gun today...


    I will re test on tuesday and update!
    Well what was it ?!?

    Sent from my Pixel 6a using Tapatalk
    Andy Lien

    VIN 11596 Jan 1982 build - owned since Nov. 2000!
    Total frame-off restoration completed 2021-2023

    Photography and Backpacking is life.

    Was Fargo, ND
    Now Kansas City

  10. #110
    Senior Member AugustneverEnds's Avatar
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    Quote Originally Posted by 82DMC12 View Post
    Well what was it ?!?

    Sent from my Pixel 6a using Tapatalk
    Yes, what is it?!?
    Nick A.

    1988 BMW 325is
    1982 DeLorean DMC-12
    1989 Jaguar XJ6

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