Hello everyone, my first post on FTE. Its a E-350 box van and it has recently been running a bit rough. Ran a can of Sea Foam thru the fuel system, but little help. When it gets under load, it looks to be blowing carbon out the tail pipe. I suspect an injector, any ideas, thank you. John

 

Welcome to FTE and the Big block thread!

Stuck injector, or maybe a bad O2 sensor. Not burning oil right? Sent from my iPad using IB AutoGroup