September 2, 200520 yr pretty sure 19mm. I usually use an open/closed end wrench as it is more accessable than a socket but am almost positive is 19mm, changed mine about 3 weeks ago.
September 3, 200520 yr Author Yes, 19 mm is the right size. Don´t know how much wear was on the old PCV valve but i doubt it has been replaced before. In what areas of engine does the PCV affect the engine. In what areas should i see improvement, better mileage, less fuel consumption?
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