1998 Merc 175 overheating
1998 Merc 175 overheating
Motor overheats but tell tail have good flow.I suppect popit valve problem.Cant hear warning horn,will install warning light.Does electrical shut down some plugs from firing?Had 3 plugs firing until engine cooled to cold.Then all plugs are firing.Read that hole drilled in washer could help but tempature could run cold.Any input? jimmymac