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Fuel Pressure Regulator Gasket failure


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Hi All,

Just returned after sitting on M5 for two hours. With some tools and engine cover removed, looks like the Fuel pressure regulator gasket has failed. Up against a bit as due to tow caravan to France on Wednesday.

Replaced Fuel Pressure regulator (FPR), Gasket and O rings, 500miles ago. FPR was advertised as a Bosch part, put when arrived, didn't appear to be which, seller did admit.

If the FPR was to fail, would it cause gasket/O rings to fail? ie over pressure.

On trying to re-start engine, M&S green lights were flashing, but not before we stopped. Could this be another issue?

Time scale for parts is my main concern.

Any input welcome.

Discovery 2001, TD5 Auto, 60,000 miles.


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Hi All,

Update, having thought about it overnight, thought bolts may have been loose, but checked and stripped today, bolts were still at correct torque, so now thinking, perhaps the Fuel pressure regulator has failed.

Would it come out of there at such a pressure? reluctant to put hand in direct line of spray.

With regard to the M&S lights, could it be gearbox has faulted, as when I lost power, it would of meant the truck, may have thought it was being towed? only guessing.

Any Ideas?


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