Twingo Jerking Loss of Power

Sounds familiar! My old Megane had similar symptoms a while back. Jerking, loss of power, the whole shebang. It could definitely be a vacuum leak, impacting your manifold pressure. An engine misfire can cause rough running and stalling. Have you checked for any obvious cracks or damage around the intake manifold? What error codes are you getting? That might help narrow it down.

Thanks for the quick reply! I haven't spotted any obvious cracks yet, but it's kinda hard to see the whole thing without taking stuff apart. Regarding the error codes, I'll have to check again and write them down this time. But if it IS the intake manifold, is it something that can be repaired, or am I looking at a replacement? Trying to gauge how deep my pockets need to be...

Yeah, those hidden cracks can be a pain to find. Without the specific error codes, it's tough to say for sure. But given all the symptoms, a leaking intake manifold due to scorching is a strong possibility. Whether it's repairable depends on the extent of the damage, but honestly, most of the time, replacement is the only reliable fix. Seeing as it's affecting your engine performance so much, I'd suggest getting it checked out by a workshop. They can do a proper diagnosis and give you an accurate quote.

Thanks a bunch for the advice! Took it to the workshop like you suggested, and you were spot on – intake manifold was leaking like a sieve due to scorching. Ended up costing me 1180€ to get it replaced. Ouch! But at least the Twingo is running smoothly again.