fuel pressure gauge on fuel rail flutters

[rrelco]

my gauge when engine ideling the needel flutters wont stay stabel, its a waldon in tank i did drop the tank a week ago and the old sock was touching the bottom of the tank, so i thought it was creating a vacuum effect.
i was able to get the pump up about .25 inch and started the motor and it was good for a week nows its doing the same.

it is also my second gauge so it was not the gauge....or it could be my regulator but need to check that soon


any guys out there with or had this problem or should i even be concerned?

[Ollie8974]

How much does it flutter? If it flutters 1 or 2 lbs I wouldn't worry about it.
Is it oil filled?

[Ollie8974]

How much does it flutter? If it flutters 1 or 2 lbs I wouldn't worry about it.
Is it oil filled?

[rrelco]

How much does it flutter? If it flutters 1 or 2 lbs I wouldn't worry about it.
Is it oil filled?

its about 2 to 3 and it is oil filled

[Ollie8974]

could be normal fluctuation from the injectors opening and closing.
How is the fuel system set up.
Is the fuel line "T" off to each fuel rail or does it flow from one rail to the next.
The "T" set up is best.

[CarlC]

If you increase the engine speed does the flutter change?

[rrelco]

it seems like it flutters more, i spoke with walbro pumps and he said i need to re locate my return line its to close to the sock in the tank

[rrelco]

could be normal fluctuation from the injectors opening and closing.
How is the fuel system set up.
Is the fuel line "T" off to each fuel rail or does it flow from one rail to the next.
The "T" set up is best.

it starts on the left side front rail then loops to the right side then out to the reg and to the tank, mass flo suggested that

[MrForce]

Is it vacuum referenced? Does the engine lope to match? Disconnect the vacuum line and see if it still flutters.

Rob

[woody80z28]

I've read that the Y is better, although aesthetically I'd rather go with the Mass Flo suggestion.