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over or underheating

  1. 1.9 JDM engine over/underheating

    Alfa 159, Brera & 946 Spider
    Hi Guys, i am after a bit of help if possible..... i have a 1.9 JDM unit in a car of mine, currently i am having chronic issues with over/under heating!!! About 4 months ago the head was replaced, an injector seal was damaged and couldn't be repaired. Second hand head was sourced, skimmed and...