after i popped the hood one day just checking stuff out i put my on my distributor cap and the other on my strut tower it shocked the hell of of me. I waited for dark to see if i saw any sparks coming out and saw nothing. is it time to change it?

 

you are a fukin moron, go buy a scooter

 

 

Don't put your hand on one electrical thing and then put your other hand on a metal/grounding source.

 

If your car starts, then don't change it. If it sounds funny, acts funny, change it. It's only like $20 max.

 

Every 30k miles

 

Yes, you need one.