I have a brigen engine on a wood chipper it's been out side for 3 years the gas cap fell off so the gas tank is mucky cleaned out the carb bowl but some got down to the piston what shod I do to prevent rust in it I'm going to put the engine on a go cart but it is rusty in every place but it's not that thick the hole carb is full of rust how do I get reed of that 2 ?????????
