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Check Powertrain Warning and Compression Issue

J_D 2.0

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I think the rings were in good condition from memory. For whatever reason I only got the warning at higher revs (the last time I was climbing a big hill on the Calder Freeway, the first time was accelerating from lights). Not sure if this helps narrow down the issue at all.
If the compression shot up when doing the wet test that normally means the rings are worn.
 

Crowny

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If it is the rings does anyone have any recommendations for sourcing replacements? Does Mace Engineering have any and if so has anyone used them or would they recommend them?
 
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