my car will start but wont turn over.... okay three mechanics said fuel pump..til i showed them this.... you attach cables to neg and tap on the pos and the car starts.... mech said no spark...so i changed the distributor....nope not that....alternator checks out good.....changed relay something to alternator...not........ battery new but switched out anyway....not that..... cables and post good.... it just need a little extra spark from the cables and it starts.... until i shut car off and then wont start again til hooked up to cables oh yeah not right away must wait about hour.... so i need your HELP.....thanks tons in advance alice