Answer by  
                                                                                          icecreamman940 (82)
                                                            
                          
                          
                                                          The Injection Control Pressure sensor makes sure that fuel is at the correct pressure when sprayed into the engine. A gas smell my indicate that the seal was not made correctly when it was reinstalled. It may also be an indicated of a blown head gasket. A faulty head gasket would allow fuel to seep out of the engine.