@SIRT posted:Should have been a class action with those QSI PS1 engines too.
Be careful here. It's only the earliest ones that have a definite problem and for these I wholeheartedly agree; perhaps the first year or two of production and only certain models. @Buco, among others, has recently done quite a bit of digging that appears to support this.
All later ones seem to work acceptably. Granted it's not easy to operate them because it takes both skill and patience but they do generally work as intended.
Mike