BMW E46 318I Pre Facelift, sucking noise during cold start?

Good morning/day/evening, I have a BMW E46 318i from 2000 with the 1.9l engine. I noticed that after startup, after about 10-20 seconds, you hear an air suction noise. After a short while, it goes away again. This noise is a bit louder and only happens during cold starts. Thank you PS: The car has…

Why is a Saab 9-3 Cabriolet Diesel (model year: 2007) with manual transmission difficult or impossible to start when it is cold?

My friend has the above-mentioned vehicle with a GM Opel engine. Unfortunately, the car is very difficult to start when it's cold, or even won't start at all. He's already removed the injectors and cleaned them in an ultrasonic bath, and replaced the EGR valve. The glow plugs are also new. But we just can't…

After a cold start, a large scooter (250cc) should immediately turn off again until it has warmed up?

Hello friends, I bought a Yamaha YP250R (XMAX250I) in the summer and rode it without any problems until winter. Since I also ride my moped to work in the winter (7km), I need it in the winter as well. Problem: when I try to start my moped (it's in the garage), it starts and then…

Polo 9n3 2008 1.2l 3 cylinder 70hp engine problems?

Hello everyone, I have the following problem: My car's cold start is terrible. Especially on warmer days, when I leave the car standing for a few hours, it won't start. Or rather, I have to press the accelerator about four times continuously before it starts. And then it doesn't necessarily stay on. It stays at…