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Thread: Reccomended spark plugs and gaps

  
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    Reccomended spark plugs and gaps

    I have tried two sets of new spark plugs now of which both make the car misfire on idle. I bought a set of GM plugs (FLR8LDCU) and a set of NGK (BKR5EK) both pre gapped. I am currently running on Bosch standard twin electrode which have been in for ages and runs the car fine but the gap seems really big and worn. Does the gap need to adjusted on the new plugs to eliminate the misfire and if so what is the recommended gap for the z20let engine?

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    Quote Originally Posted by 52Minty View Post
    I have tried two sets of new spark plugs now of which both make the car misfire on idle. I bought a set of GM plugs (FLR8LDCU) and a set of NGK (BKR5EK) both pre gapped. I am currently running on Bosch standard twin electrode which have been in for ages and runs the car fine but the gap seems really big and worn. Does the gap need to adjusted on the new plugs to eliminate the misfire and if so what is the recommended gap for the z20let engine?
    I think its the 6s mate. Have a look on the courtenay site.
    PHASE 3 ON A SWITCH WIV A GARRETT

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