Hey all! A few weeks ago my 2012 GTI started misfiring. The misfires happen at full throttle. When they do happen if I release the throttle to around 90% the misfires stop and the car continues to accelerate normally.
I ordered up new coils and plugs but the issue persisted. Next I took her to my local shop for a closer look and they found carbon buildup which they then cleaned out. While doing that they also replaced the fuel injectors for good measure. I found some buildup in the air intake were the crank case hose connects and cleaned that out.
Unfortunately the misfiring is still happening. I've ran her hard a few times and doing an "Italian tuneup" but the issue continues.
I'm thinking of replacing the PCV and/or Crankshaft Position Sensor next.
Wondering if anyone has recommendations for further troubleshooting steps?
I ordered up new coils and plugs but the issue persisted. Next I took her to my local shop for a closer look and they found carbon buildup which they then cleaned out. While doing that they also replaced the fuel injectors for good measure. I found some buildup in the air intake were the crank case hose connects and cleaned that out.
Unfortunately the misfiring is still happening. I've ran her hard a few times and doing an "Italian tuneup" but the issue continues.
I'm thinking of replacing the PCV and/or Crankshaft Position Sensor next.
Wondering if anyone has recommendations for further troubleshooting steps?