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Thread: 70 2.2L Tuneup - What do you think?

  1. 07-07-2015, 07:02 AM #1
    RW7810
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    70 2.2L Tuneup - What do you think?

    Doing a much deserved tune up on my 70 911T. oil, plugs, valve adj, etc. The plugs on the right bank, cyl 4-5-6 are very black and sootie, the plugs on the left bank, 1-2-3 look pretty good. Should I just turn in the mixture screws on the right bank a half turn or so ?

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    Name: plugs 4-5-6.jpg Views: 182 Size: 91.8 KB
    Robert Williams
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  2. 07-07-2015, 11:46 AM #2
    PMNorris
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    I'd balance the carbs first. As all 3 on one side look the same, that could be your problem.
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  3. 07-08-2015, 07:54 AM #3
    RW7810
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    update.....turns out #1 and #3 cyls weren't firing! Engine ran and sounded good, so now I need to figure out what's going on.
    Robert Williams
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  4. 07-08-2015, 11:15 AM #4
    eaton
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    I've found Paul Abbott's carb tuning and maintenance primer invaluable in getting my car running right. Be sure to also check the resistance in your plug wires with a multimeter. Bad wires were the culprit in my case. Seems 40-year-old plug wires do go bad, eventually.

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