well i ve been trying to find this for a while i changed my spark plugs and then like 2 days later i got into it hot and heavy, since then i dont ahve a top end .. it jsut kinda flat lines .. i chacked the plugs and they look fine , i jsut didnt know if anyone knows what to look into . thanks again

 

Well, if you had a top end before you changed the plugs and now you don't, perhaps you overlooked something in the changing of the plugs. I.e, did you change brands or improperly gap them---do you have a miss, etc.