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OBD codes V70-XC70 1998

2000 V70 SE NA, Denso, AW-55, 256k miles.

This has me thinking, about removing the cylinder head and then once it’s repaired, waiting forever to sync up the ECU and emissions systems to Pass the CA smog test (April 2019). I’ll know more Monday when we do a compression check, but I suspect the dead #3 cylinder has a burned exhaust valve.

It is what it is I suppose, and will have to deal with it if/when the symptoms show.

Background as raised in earlier BB posts: #3 plug fouled every 500 miles or so and a fresh plug would fix the problem, until it fouled again. This last time around, a new plug failed to fix, and now #3 has a constant misfire. Cylinder is absolutely dead.

I’ll know more after Monday.






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