Hey guys, having a couple of problems with my Audi. First one is, when the engine gets hot it starts to struggle as if it's running on three cylinders, but it's fine when it's cold. I thought it could be something to do with the automatic choke but the fuel injected models don't have automatic chokes do they?

The other problem is to do with the central locking, basically it doesn't work. I'm pretty sure it's got the pump rather than running off the engines vacuum, but how do find out if it's got a leak or not?

Thank in advance.