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welshpug

How To Test A Fuel Pressure Regulator

By welshpug, in XU Engine & Gearbox Service and Maintenance - ARCHIVE

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petert    586

petert
Posted

It should be 3 Bar (tube disconnected) while the engine is running. It will slowly reduce back to zero once the engine is switched off, unless the pump has a non-return valve.

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Stian_P    1   1 Cars

Stian_P
Posted

I did the test The same way welshpug did, so I cant have the engine running. Or is there a different way to test it?

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welshpug    1,657

welshpug
Posted

yes, pressure gauge in the inlet pipe to the regulator and fire it up.

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Stian_P    1   1 Cars

Stian_P
Posted

Should it read 3 bar at idle? What kind of threads do the fuelrail have?

 

Thanks for replying guys :-)

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