so your saying it only smokes on start up and when its cold? It could be valve seals or rings being worn. its not to bad of a job, but if you have never done this type of work a manual will help you through the process. Price wise, your looking at around $250. this include a new pistion kit, top end gks kit and a bore job. If you do decide to do the upper end, installing a new timing wouldn't be a bad idea to do also. another $60 for a DID chain and about $20 for a clutch cover gks.