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welshpug

How To Test A Fuel Pressure Regulator

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petert

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

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

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

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Stian_P

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

 

Thanks for replying guys :-)

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