Who did you get the pump from??
It doesn't look like he has been online since the 3rd. I would suggest stripping it down and rebuilding it. There are instructions here - http://www.autotech.com/mm5/instructions/i127100k.pdfMore pics here - http://www.autotech.com/download/2.0TPump/FuelPump.zipI hope it's nothing too serious and just needs a clean up. Rob
Autotech, the piston has a step up, and oem one is just 1 straight size. Youll havet to pull it out of the hpfp to see it.