JoeYoung247 Posted April 13, 2021 Share Posted April 13, 2021 If anybody could explain the differences between the two fule pressure regulator and the fule pressure pulsation damper on the back ends of the fuel rails I need to know because I just swapped them out from auto zone and they both look different from the original denzo ones and now I keep getting a gas smell coming from under the hood ...?? Sos someone save my 03 sc 430 Quote Link to comment Share on other sites More sharing options...
Lexus Owners Club Posted April 26, 2021 Share Posted April 26, 2021 If you are smelling fuel then it must be leaking from somewhere. May only be a small amount but although the regulator/damper are different they may be faulty or the installation is missing a seal? Worth removing after depresurrising the system and checking for correct sealing Quote Link to comment Share on other sites More sharing options...
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