Chinese quad believe 100cc automatic so I bought this second hand the wiring was like spaghetti junction there was no spark atal so managed to fix that problem with a little perseverance at first it fired up no problem with a little fuel put down the head it was idialling no problem now when I take the plug out its turning over no problem but once I put The plug back in it's like it trying to drain the battery as though to much compression in the engine any help atal would be great as I need to just get it fixed as kids are forever wanting to go over the field on it. Please someone help