yeh i am going to check all this tommorow, i didnt have a sudden loss of power it just stopped lol, and then wouldnt start again, i am going to check the ht leads and spark plugs tommorow then i am going to check for air leaks as i did look but it was in the dark so i couldnt see everything. Its just wierd that it runs fine all day including when i tested it to see if it was quicker or not and then it just goes. Cheers for all your help so far i will get back on here tommorw when i find out what it could be or even other things i need to check.