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fuel pressure regulator 200 1989

posted by  someone claiming to be Herb Goltz on  Wed Jan 22 08:33 CST 2003 [RELATED]

Hi Greg:

Usually when the fuel pressure regulator dies, it is because the membrane inside fails, and the pressure is no longer regulated by engine vacuum. Instead it goes to full pressure all the time, resulting in a rich running condition, which in turn fouls plugs.

My 760 is doing fine in the cold ever since I replaced the FPR and plugs. Before the work it would start, but would run roughly, smoke and miss until all 6 cylinders fired. After that it ran OK but rich. Now it starts up reliably even in this weather. It gets used mostly for short run city stuff too...

My car has the B280F 2.8l v6, which has its own quirks, but thankfully it has a timing chain rather than a belt!

Good luck with your FPR!

Herb Goltz, London, Ontario, Canada '89 760GLE w/170K mi






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