can i spray wd-40 lubricant on the engine compartment? during my start-up, every morning, the moving part on my engine that is attached to the gasoline pedal is sticky, it won't go back but if the engine is already heated up, that thing is normal again. i'm afraid to spray wd-40 on it because it might cause sparks as warned by the label on the can. is it ok to spray it or not. please help, thanks....