Easy to check if you need a earth strap just take a good quality jump lead from the neg battery terminal to anywhere on the engine if it turns over better then you are right its the earth strap,if not most likey a weak battery or a bad starter motor or the connections on both might just want a good clean. John....(but you need a good jump lead not a £10 on from halfords)!!!! [Non-text portions of this message have been removed]