Smoky Acadia Needs PCV Valve Fix, Repair Guide

I had matching symptoms in my 2017 GMC Terrain with the 2.0L engine. The blue smoke combined with poor acceleration pointed directly to a failing crankcase ventilation system. The PCV valve was completely clogged, causing excessive pressure in the crankcase. The repair involved replacing the entire PCV valve assembly and cleaning the intake manifold, which had accumulated significant oil residue. The valve failure was causing engine oil to get pulled into the combustion chambers, explaining the blue smoke during acceleration. This is a serious issue that needs prompt attention. If left unfixed, it can lead to: Increased oil consumption, Damaged seals from excessive crankcase pressure, Poor idle performance, Potential catalyst damage from oil contamination The symptoms worsened gradually over several weeks before I got it fixed. The maintenance was straightforward but required specialized diagnostic equipment to verify proper system operation after repair. Any engine showing these symptoms needs professional evaluation, as continued operation risks internal engine damage from improper crankcase ventilation and oil circulation.

Thanks for sharing that detailed experience. Had almost identical issues with my 2019 Acadia a few months back, blue smoke during acceleration and poor performance due to a failing PCV system. Really helpful to hear your repair process. Did you track how much the total fix ended up costing? Also curious if youve had any smoke or ventilation issues since the repair was done. My engine has been running much cleaner after the fix but always good to know what to watch for in case symptoms return.

Had the repair done last month, completely resolved the ventilation problems I was seeing. The malfunction was exactly what the mechanic suspected with the crankcase ventilation valve. Cost came to 360 Euro for parts and labor, which seems standard for this type of repair. No signs of smoke or emissions issues since the fix. Engine runs smooth with no idle problems or oil leaks. The acceleration is back to normal too. Pretty straightforward repair once they identified the faulty valve. Keep an eye on oil levels and watch for any blue smoke returning, but with proper maintenance, these systems typically last a long while after being replaced. The improved performance makes it clear how much the bad valve was affecting engine operation. Would definitely recommend getting it checked right away if you notice those symptoms coming back, but chances are you should be good for many miles now that its been properly repaired.

Took my Acadia to the shop last week and got it all sorted. The total repair came to 480 Euro, which included replacing the PCV valve, cleaning the manifold, and some diagnostic work. A bit more than I expected but worth every cent seeing how much better it runs now. The mechanic showed me the old valve, completely gunked up with oil residue. No wonder the maintenance was needed with that level of crankcase ventilation malfunction. Since the repair, no more blue smoke and the acceleration is back to normal. The engine runs so much smoother, especially during cold starts. Been keeping a close eye on oil levels and checking for any leak signs, but everything looks perfect after about 1000km. Really glad I got this fixed before it caused more serious issues. Will definitely stay on top of regular checks to catch any early warning signs if they show up again.