My plug will spark the first couple times it turns over then seems to get weaker. The carb is off of the head. I can spray WD 40, either, and gas into the intake and press the start button. The engine turns over but does not try to crank. No popping, sputtering or anything. Shouldn't it pop or backfire or do something noticeable?
Also, I can hold the plug wire and I can feal a slight pulse. Shouldn't it really hit me hard while I am holding it and cranking the engine?

 

Well after further investigation, it seems that I lost the spark when I put the plug back into the head. Any recomendations?