I've got a problem with my chevy 350 that's driving me crazy!
When I go to start the engine, it cranks and starts right up but it runs like sh**. running on less then all eight and belching out black smoke. If I can keep it running for a couple of minutes it will start to run on all 8 and the exshust clears up and seems to run fine after that. After it sits long enuff (a couple of hours) the whole bad running - black smoke thing starts all over again. HELP!