sarts first time when cold but every now and again will not start when hot i have fitted new starter/new earth straps/ alternator could it be a wire braking down when hot or a dicky ignition lock???????
Sorry don't know but!!!!
I think your question would be better off in cars,lorries or vans sections as mobile homes [this is] may have wheels but don't have an engine.
Copy and paste it to save re-typing.