Hey guys need some help, just replaced a fuel pump on my 09 M8 with a qfs pump and regulator, jumped the original fuel pump with a 9v battery it started first pull and ram for quite some time than went to start it again and it died off right away. Replaced the pump today with said QFS pump, started first pull check engine light came on, sputtered then bogged off and now won’t start, is this a common problem with the QFS pumps before I go chasing wiring??? My theory is that if the pump was jumped initially and ran for about 15 minutes than wouldn’t start after the fact that the pump would need to be replaced, so after doing so now that it wouldn’t start it might be a faulty pump is that a fair assumption????