It may be your ignition switch. Mine will just make a clicking noise sometimes when I leave it out in the rain and forget to put the cover over the key hole. If you do a search on here you will find that some have sprayed i think brake cleaner in the key hole and that fixed it. Give it a try.
If you do a search on here you will find that some have sprayed i think brake cleaner in the key hole and that fixed it. Give it a try.