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L986

Fuel Pressure

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Hi,

When checking the pressure in the fuel ramp ( (996 C2 MY98), the pressure gauge's needle oscillates rapidly between 3,8 and 3,9 bar. When the engine is idling it reads little more than 3,4 bar and the oscillation is lower.

Is normal this oscillation when the engine is stationary or do you think that my pressure regulator is not working properly?

Thanks,

Luis.

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You have to Change the Fuel pump !! Becouse the right pressure its 4 par !! but when u start idling and reads little more 3.4 its not pressure very well

Check another car and u will see the deffernt.

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From the 996 Carrera Service manual:

Nominal test values:

Stationary engine 3.8 ± 0.2 bar

Engine idling 3.3 ± 0.2 bar

Looks pretty right on to me.

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