well started my car up yesterday and it was misfiring as if it was only running on 3 pots well i took the ht leads of each plug 1 at a time and 4th plug it seemd it was not sparking properly well anyway got back in the car give it a few revs and it was fine so i thought great anyway started her up this morning it done a mad misfire then just cut out now it wont start at all i have checked the sparks from each ht lead and they are very slow on every pot any body got any ideas on wat it could be thanks