Long story short I had a code p0087 low rail pressure and car was having hard time starting (if at all). Eventually I kept pumping gas pedal and I can hear like it was a clog that shot thru car (I know weird) but car started up normally with minor hiccups. Everything pointed to clogged lpfp. I replaced with new one and code went away (at least so far), old filter did look clogged up a bit. My new code I have is a p0450 evap system pressure sensor malfunction, but I cannot find anything on this online or know where to look for this. Any help would be greatly appreciated!