|
Always start with the simple and cheap fixes first. Fresh oil, adjust the valves properly, put in a new plug, make sure the air cleaner is clean enough. I know you did replace the plug, but is it a good NGK one or a crappy Chinese plug? It matters.
If none of that works, then you have further digging to do. Next, make sure all electrical connections are tight. Checking the simple and obvious things cures a lot of problems.
|