r/TWINGO

So i saw a meme about the twingo a couple of months back on tiktok, and then i kinda fell in love with that little guy. And i asked my father if i can get a twingo, and he sayed yes. But only if i have the grades. He sayed ill get it if my worst grade is a 4 (German system, 1 being best and 6 worst). I think i can do it, even though my grades aren't promising right now. But i finally have the motivation. And its the. Mother. Fucking. Twingo :D. Here is what i like about the car:

- he smiles. Yup. (that's why i also like the miata. They both just look like they are happy to be there. Nothing against the aggressive looking cars that look like they eat hearts for breakfast, shout out to the veneno)

- gas mileage also doesn't look bad when i googled it

- it looks amazing with AND without modifications on the outside (for example bodykits and stuff like that)

- i can haul friends around with it. And just imagine how badass it would be picking up a shawty in a twingo (or goofy, but idc)

So yeah i just wanted to share this with yall. Btw is ac standard on these? And I also saw that you can like do something with the seats so it can change into a "bed" or sum. Is that true? (asking for the 1999 model, i rlly like that one).

Also i saw one with a panoramic "ceiling" (forgot the word). That would be cool to find.

My Twingo has an uneven idle and is failing emissions because it's running slightly rich. I've changed:

Coolant temperature sensor
O2 sensor
Coil
Spark plugs and leads
IAC valve
Air filter
Fuel filter. Pump comes on fine and delivers good pressure.

I've also changed the gaskets in the throttle body. Unfortunately the car doesn't have OBD2 (I'll never buy another car with injection but without OBD2) and I don't have access to the old Can Clip diagnostic machine. There's no engine light. Checked engine block earth. The injector is clean and I checked the O-rings. I replaced one with a green O-ring, which probably isn't right for the fuel system. I'll change it. According to the new coolant temperature sensor the engine is running slightly too hot, because the temp light on the dash comes on but it's quite faint. It's only a one pin sensor and the resistance curve might not be the same as OEM.

Compression is 160-175psi on all four cylinders. I checked when the engine was cold. Vacuum is OK; drops slightly when the engine slows but still within good range according to the dial.

The video is when the car is warmed up. This is the C3G engine, not the later D7F. The idle used to stumble more than this but since I changed the IAC valve it goes up and down slowly. There's also a burble from the exhaust but no smoke. All four spark plugs seem OK.

The engine starts and runs well, apart from a slight occaisonal misfire under load at light revs. Fuel is economy is still good. These use hardly any petrol anyway so it's hard to tell.

My thinking is that there might be leak in either the intake or exhaust so I've bought a smoke test machine to check both.

Any ideas what might be wrong with it?

https://reddit.com/link/1shjumw/video/9095xd45mcug1/player

Vacuum test prior to new IAC valve installation. New test would be similar, not as dramatic a drop