My 1997 425 is hard to start sometimes. When it's cold it turns over and over and smells like gas. If I pull a plug it's wet with gas. If I keep trying it will eventually start but I drain my battery pretty good. If it's warm it will usually start as long as I don't choke it at all. If I choke it even for a second it takes 30-40 seconds to start and then spits and sputter for 30 seconds. Sometimes it will surprise me and start right up. The common thing is I think is I smell gas out the exhaust. I replaced the plugs. Once it starts it seems to run good. I have read all the other 425 issues in the forum and I have not come to a conclusion to the problem.