its a Carson specter ( German specs cuz i am in Germany ) don't know the engine size but it says 3.5 on the side. i took it to my friends place and we notice that the lines were pinched so i fixed that along with a total motor cleaning than my glow igniter went out so i charged that. i think that's it for now lol. How can you tell if you glow plug goes bad? how long should a new glow plug last? how can you tell if it is bad?