ok me and a buddy is finishing up a 3.5 swap. we went to start it up and it turns over real smooth no knocks or weird sounds at all but it wont actually start. the alternater is good, battery is good, just replaced starter. we smell gas after trying it a few times so i figure its running rich??? i checked the ecu for codes and got a 1205 and a 0407. what exactly is the line pressure solenoid (im guessing its fuel line??) and how could i remedy those two codes