si_motor_spt

Hey peeps, any one have a fuel pressure gauge installed on their civic fuel filter that leaked???? well, when my car is off the pressure stays at 30 psi then eventually it starts to go down, is that normal? is it leaking? i saw a little fuel in the begining but i tightend everything a bit more.... wat do you think....?????

vtecb18c

has it leaked since you tightened everything?

Frozen E

mine slowly bleeds down to zero as well when I shut the car off. Takes a couple of minutes, but it'll completely lose pressure.

si_motor_spt

is it normal to completly lose pressure????

si_motor_spt

bump
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Memnoch

iTrader: (1)

Did you check for fluid anywhere or can you smell gas?
Cause my gauge stays at 35 psi even when the car has been off for hours.

si_motor_spt

well, i thightend the gauge nut connecting to the adapter on the fuel filter bolt a little more because i would wipe behind the gauge and their would be a little gas on my fingers but it dosent seem to do that anymore....when i squeeze a little on the fuel line the gauge moves, thats normal right??????

Memnoch

iTrader: (1)

Yea thats normal cause your creating more pressure when squeezing the hose, it doesn't look like its leaking anymore? Whats the pressure read when off for a hour or two?

Luserkid

If the fuel pump isnt on then there is no constant pressure. When the car off fuel is still going to pass through the return back to the tank making you read 0.

si_motor_spt

Thanks for your guys help, Great advice......It seems to be okay now

Memnoch

iTrader: (1)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Luserkid &raquo;</TD></TR><TR><TD CLASS="quote">If the fuel pump isnt on then there is no constant pressure. When the car off fuel is still going to pass through the return back to the tank making you read 0. </TD></TR></TABLE>

How does that make any sense, and please explain why my gauge constently reads pressure...?

Luserkid

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Memnoch &raquo;</TD></TR><TR><TD CLASS="quote">

How does that make any sense, and please explain why my gauge constently reads pressure...? </TD></TR></TABLE>

What type of gauge do you have? Pressure is only built up when the fuel pump is pumping. Once the fuel pump stops pressure stops but fluid will travel until it stops as well.

And you are saying that you leave the car off over night and you go to your car and the gauge still reads 42psi? Could be a faulty gauge, a liquid filled thats not allowing it to go down or a clog somewhere in your return line. Depending on some of the setups it might not hit 0 but it will not stay a constant 42 psi.

Frozen E

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Memnoch &raquo;</TD></TR><TR><TD CLASS="quote">

How does that make any sense, and please explain why my gauge constently reads pressure...? </TD></TR></TABLE>

Electronic gauge or mechanical?

If it's a mechanical gauge and it's seeing pressure after sitting overnight......you have some weird freaky stuff going on in your fuel system.

Electronic gauge (like my autometer cobalt gauges) will keep their needles at whatever it was when you shut the car off.

Memnoch

iTrader: (1)

Its a mechanical gauge, and I checked it a few hours after driving.. I don't have any issues anyways I was just curious.

I was under the impression that the fuel system is like any other liquid system (like the master cylinder) it maintains constent pressure unless the car is off and you open the gas cap ( you can hear the system let pressure out ).