Escort1991 and Jack Crow,
Thanks for helping me out. Now Escort1991, about your question:
"The question is: If you unhook the cap, then hook up the battery, does it still spark? "
No it does not. when I connect it back it is ok
Jack Crow you where mentioning about doing a test on the cap with a light bulb. Well here is another thing also that I just remembered. When i diconnected the cap it came with a small resistor. You connect it to both of the posts and it tends to get hot, Well the last time that I did that it remained pretty cool.