I just put two new spark plugs in my engine and it still isn't starting. The wires that connect to the spark plugs seem to be in good condition except one of the springs comes out sometimes that goes around the head of the spark plug. Is it alright if I just shove it back in the cap each time or do I need to buy a new wire?<br /><br />Also, how do I check to see if I'm getting a spark? Do I need special tools?<br /><br />Jeff