I recently purchased a used 2008 Honda Pilot (2WD). I notice after purchasing it that every so often it would have trouble turning over when starting. I ran through checks on the battery, starter, alternator, all were good. Then I notice it would consume about 2 quarts of oil, almost half the oil capacity every 1,000 +/- miles. I currently use Valvoline Max Life (High Mileage) full synthetic 5W-20 motor oil. Then I change the spark plugs and notice that the cylinder #1 (back Passenger side) had an oiled fouled spark plug (see attached photo) which explains the oil consumption. I read multiple articles (attached) and forums and have come up with three possible issues:
- Valve stem seals wore or broken. This is a moderately difficult, but doable, repair for a DIYer like myself.
- Faulty Positive Crankcase Ventilation (PCV) system. This is a simple repair.
- Piston rings wore or broken. I pray to God this is not the issue, because this is very advance repair with special equipment or cost more than the Pilot is worth for a professional to fix.
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