Quote Originally Posted by XanRules
I use the Black Magic engine cleaner stuff and it works fine...of course, it's my dad's car and he never cleans it, so it's still gross, but it's an improvement. I don't run the engine when I do spray it or rinse it, though...why would you?
Helps to dry things quicker. I worked at a dealer, washed the engine bay on a jetta once, left it running. Moved it out the door, shut it down. Brought it back in for another diagnosis, and it had started fine. Another guy washed the engine bay on it afterwards. Didn't leave the car running. Tried to fire it off to pull it out, wouldn't start. Waited til the shift was over, still didnt start. Next day came in at 7 am. Had my first break at 9:30 went out with a jump box b/c they cranked it til the battery died. Hit the key, fired right up.