Never start the car engine when it is already running

http://autorepair.about.com/library/faqs/bl760g.htm

http://in.answers.yahoo.com/question/index?qid=20090120210126AAEi8aR

"you will damage both the starter and flywheel"

The simple rule: every time before starting the engine, look at the engine speed gauge. If it is more than zero, then it is running, and do not start the engine.

Never start the car engine when it is already running