When I dropped the gas tank to replace the fuel pump, the vent hose was crimped a good bit. I ran a large phillips head in it and thought I had opened it up. It was pinched pretty good before I bored it out. Would leaving the gas cap partially loose make any difference while I'm driving or would you replace the hose that was crimped?

Someone had also mentioned the EGR valve possibly making it run like it is. I thought about replacing it.

Thanks for your first response!