Ceseus
Newbie
I bought this nice step side sierra with 350 v8 and 146k on the odo. When I start it, it turns right over but dies if I give it gas, or even on it's own. Sometimes it starts with "service engine soon", I hear popping in the muffler, but then it stays running and runs good, but muffler popping continues... i replaced the fuel filter, but it hasn't changed anything naturally. plz help me out.