Car stuck on full throttle

[abuzar1]

First of I'd like to thank all the members here. I had a lot of car starting issues but thanks to you guys I got them sorted out. I had the car back to running, starting, and driving beautifully on regular ol' diesel.

After driving it for a few days I decided to just park it and sell it. Took a few pics and what not. A week later when I went to go start the car it was stuck on FULL throttle. I started freaking out and smoke started coming out of the engine compartment. I don't know what the smoke would have come from but I hope I haven't ruined the engine.

ANYWAY, so then I disconnected the fuel line to get it to stop. I noticed this one thing was broken. I was hoping someone could tell me what it was and where I could possibly get replacement parts from (for example if any VW cars use the same part and I could go to a salvage yard and get it from them).

Here are the pics:

http://imageshack.us/a/img27/1997/dsc0212jw.jpg
http://imageshack.us/a/img687/8031/dsc0213fq.jpg
http://imageshack.us/a/img51/1791/dsc0214ci.jpg
http://imageshack.us/a/img204/217/dsc0215ym.jpg