Mitsubishi i's Mystery: Engine Shakes, Stalls & Jerks

Hey there, I had very similar issues with my 2016 Mitsubishi Outlander last month. The symptoms you're describing are exactly what I experienced, engine light, power loss, jerking during acceleration, and rough idling. Turned out the vent lines from the fuel tank to the purge valve were indeed the culprit. Took it to a garage I trust, and they found that the lines were partially clogged and had some small cracks, which was messing with the fuel system pressure. They had to replace several vent lines and the purge valve itself. It wasn't a hugely complex repair, but it's definitely not something you want to ignore as it can lead to bigger fuel system problems. Main thing is finding a trustworthy mechanic who knows what they're doing with these systems. The whole fuel tank ventilation system is pretty important for proper engine function, and yours is showing the classic signs of failure. My advice would be to get it checked soon, these symptoms usually don't improve on their own.

Thanks so much for sharing that! Sounds exactly like what I'm dealing with. Quick question, do you remember roughly how much you ended up paying for the repairs? Also, has everything been running smoothly since they fixed it, or have you noticed any other issues pop up? Just want to know what I might be in for cost-wise and if it really sorted out the problem for good.

Hey again! Yeah, happy to share the details! I just got the repair done last month, and it cost me exactly 205€ to fix those faulty vent lines running from the tank to the valve. Honestly, it was worth every penny because my Outlander's running like a dream now. Not a single problem since the repair, all that jerking, stalling, and power loss issues completely disappeared. The mechanic really knew what they were doing with the tank ventilation system/DMTL valve problem. I was actually pretty relieved when they pinpointed the issue right away. Since the fix, my engine light's stayed off, and the car's performance is back to normal, smooth acceleration, stable idle, just the way it should be. If you're dealing with the same symptoms, I'd definitely recommend getting it checked out. The repair wasn't as expensive as I initially feared, and it's such a relief to have the car running properly again. Just make sure you find a mechanic who's familiar with these kinds of fuel system issues in Mitsubishis.

Thanks a lot for all the details! I bit the bullet and took my car to a new mechanic yesterday. You were spot on, it was the fuel system ventilation lines causing all the trouble. My repair came in at 190€, even a bit cheaper than yours! The experience was actually way better than I expected. The mechanic walked me through everything they found and fixed. They replaced the cracked vent lines and did a quick system check to make sure everything was working properly. Just drove it home from work today, and what a difference! No more jerking or stalling, the engine light's off, and it's running super smooth again. Feels like I got my old car back. Really glad I didn't put this off any longer, could've turned into a bigger headache. Thanks again for sharing your experience. It really helped me take that step to get it fixed, and now I've even found a reliable mechanic I can trust for future issues!