How do i check the rail pressure? I was cleaning my engine bay the other day and everything looked good and i don't have any type of leaks or anything. Yes i am running a stock 2004 monte carlo bin tune.
Also would running seafoam in my gas tank cause my fueling to be like that. I filled up monday night on my way to work and added seafoam in to clean out my injectors. I am still running that gas even during the scans. I filled up w/ 93.