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So...P0021 Code Read at shop...What to know about it?


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Samarai, my understanding of what you described is that this is where (on the top) the filtered bolt was that had the collapsed filter.

 

That is correct. The banjo bolt on the TOP of the head bolted to the oil control valve block. The oil line that feeds the actual OCV on the drivers side had a filter in it. The oil flow is down on that one because my filter was lodged at the bottom of that, it wasnt even secured in the banjo bolt anymore at this point which threw the code for timing over advanced. No oil flow, so it could not advance the timing like it was supposed to via oil pressure.

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