- Jul 7, 2022
3.8L V6. I'm replacing my carb with a rebuilt one. The valve covers were leaking & the bolts were so loose that I could turn them by hand. The intake bolts weren't much tighter, and the top of the engine was an oily, grimy mess. The intake is off & the ports are caked with carbon - see below. Note the area in the center... it seems like there might be an entire passage plugged on one or both heads. See images below with comparisons to heads I found online. What are those passages? Note that the car ran a little rough at startup but once it warmed up it seemed to run fine.