Fuel pressure question

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04-28-2017, 07:25 PM

Kevin in Atlanta

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Fuel pressure question

On my 90 S4 as soon as the engine stops fuel pressure drops to near zero. replaced a bad pressure regulator this morning.

Dampers? Fuel pump check valve?

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04-28-2017, 07:49 PM

Speedtoys

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If -a regulator was bad, then both dampers should be replaced too. Same design, same failure rates.

Yes, pump check valve.

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