Crankcase (pcv) Problems of Buick Encore

My check engine light has been appearing off and on for a few months. I received a diagnostic code of p0325 twice by two different professional technicians. I ordered an oem knock sensor, hired a technician to replace the knock sensor, drove about 10 miles and the check engine light came back on. Then, I received a diagnostic code of p-1101, and the recommended solution is to replace the intake manifold and all necessary gadgets. After speaking with professional technicians and doing thorough online research, I discovered that general motors issued a service bulletin no. 19-na-101, dated July 2024, covers certain 2013–2019 model vehicles (including Buick Encore with 1. 4l turbo) for oil consumption and/or leaks caused by a missing non-return valve in the intake manifold. The bulletin acknowledges that the intake manifold design on these 1. 4l turbo engines has a non-return (check) valve or pcv system component inside the manifold that can fail or go missing, leading to issues like boost/vacuum leaks, oil consumption, engine performance faults. •the pcv valve is non-serviceable (you can’t replace it separately), meaning the only fix is replacing the manifold — which gm calls out in the bulletin. If gm or Buick hasn't issued a recall they should offer goodwill assistance especially since this is a defect on their end.

See all problems of the 2019 Buick Encore 🔎.

There is a known defect with the gm ecotec engines, specifically the lack of retaining clip for the internal pcv valve, allowing it to become dislodged and drawn into the engine. Without the pcv valve, tremendous engine pressure is produced, leading to broken gaskets causing vacuum leaks, misfiring, severe vibration, and loss of power when accelerating (which can be a safety issue). Dorman produced a video outlining the issue and has re-engineered the part to prevent the issue from occurring: "why gm 1. 4l ecotec engine intake manifold and valve covers repairs are often related" https://youtu. Be/kqvbsk2tluk?si=pefpczwy_tyrhndu this appears to be a fairly wide-spread issue with the gm ecotec engines, and gm should perform a recall to replace these parts, and reimburse those who had to replace themselves. This also causes error codes requiring spark plugs to be replaced (they get fouled by oil) and the maf sensor. In troubleshooting, I also had to replace the distributor power bar and air intake hose. I have recipts for all parts, but file upload is not working on this site.

See all problems of the 2017 Buick Encore 🔎.

My vehicle was in motion on the highway at an approximate speed of 65mph and suddenly I heard a strange pop. My car immediately went into limp mode causing my speed to drop to 25mph on a moderately crowded interstate highway. Due to the dangerous nature of this issue, I drove on the shoulder to the closest exit and drove the car to the closest dealership. 6 different trouble codes were pulled on the vehicle. I purchased my vehicle less than 6 months ago along with a gmpp extended warranty. For two weeks, the warranty could not be found and I was calling numerous warranty companies trying to find out what occurred with my warranty. After the 2 weeks of calls and confusion, the dealership stated that they would cover the pcv valve issue that they had diagnosed to be the problem. The dealership never stated that the pcv valve malfunction was in fact a "special added protection issue" put out by gm in August. I finally received my vehicle back two days ago and the car is still not working as it was before this repair. It is idling hard and at high rpm and also hesitating during acceleration.

See all problems of the 2014 Buick Encore 🔎.

Camshaft cover failed pcv system had cover replaced at 50,000 miles under power train warranty engine light comes vehicle stalls at stop light this happened again at 80,000 miles this time because of causing to much vacum had to replace intake manifold gasket so it is my thought maybe Buick should put this camshaft cover with pcv system on recall same part failed again.