I'm looking at an '85 2.8 Blazer with 113,000 miles that may need some serious help. It idles poorly but runs great on the street. I took the top off the breather to flip it back over, the PO had flipped it bottom side up and the filter was drenched in gas. I fired the truck up and there also seems to be a lot of blowby coming from the hose between the valve cover and the breather. Is this normal? I really like this truck but having only worked on fuel injected trucks before I know nothing about carbs.