Jetta misfire cylinder 1....help!
The wife and I went on a one week trip with our truck. After the car being parked one week, I went to start my 2003 Jetta with 2.0 gas engine and the engine light came on. I drove a few blocks to gas it up and it went into the decreased power mode. I borrowed code reader from my boss, and it says I have a cylinder #1 misfire. I removed that spark plug and it looked white and kind of corroded. I cleaned it up and started it again. No change. I'm in need of help as to what to test/check next.
Thanks for any advice.