Question about 2002 BMW 3 Series

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Pressured tank when opening the fuel cap it is very highly pressureised and gives a blow back of fuel. why is it so pressured

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Your e vap purge cyliniod is not working it under the front intake it has vacuum to it and wires check to see if it is plugged in and check ur vacuum lines

Posted on Nov 01, 2013

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Posted on Jan 02, 2017

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I need a diagram to show me the routing of the petrol pipes on a citroen c3 from the petrol tank to the engine and back to the petrol tank please?


the fuel is constantly rotating round the fuel lines, the fuel is pressurized, so any fuel that is not used by the injectors is sent back to the tank.. this give a constant flow and pressure to the tank. the pressure in the tank is regulated by the pressure relay that lets air into the tank to lower the pressure. this is regulated by the ecu and your speed. if the pressure drops or is to high in the tank the engine can cut out on the fuel rail there is a fuel pressure regulator this keeps pressure on the fuel line coming into the injection system. some systems have duel line feeds from the tank for 2 rail systems, this system was not reliable due to the amount of feed pressure needed to fuel 2 lines. and can cause pressure leaks. some systems have a pressure regulator controlled by the ecu on the return line, this is more fuel efficient as it keeps the fuel at a steadier flow back to the tank and give a better fuel spray into the engine. hope this help you.

Jul 03, 2017 | Citroen Cars & Trucks

1 Answer

Suzuki grand vitara p1410


using a real scan tool, so you SEE all DTCs not just ONE?

1999 GV? which engine> we can NEVER GUESS THAT.
what is your question, you posted a DTC, so....???
want use to guess.?
what is to list the FSM tests to discover true cause>?
my GV state side has a 2.5L V6, but there are others. 1.6L ,2.0L etc.

P1410 Suzuki - Fuel Tank Pressure Control System Malfunction
Faulty Fuel Tank Pressure Sensor
- Fuel Tank Pressure Sensor harness is open or shorted
- Fuel Tank Pressure Sensor circuit poor electrical connectionwhat i do , is reset the code, then tighten the gas cap and drive.
see if it comes back. or a new cap, some leak.
but it just might be and open sensor.
reading way too high.

Jul 11, 2014 | 1999 Suzuki Grand Vitara

2 Answers

Fuel tank pressure relief valve


You have some otyher issue here besides the pressure problem.

Jun 22, 2013 | 1995 Geo Prizm

1 Answer

Fuel filter location 08' volvo v50 1.8 petrol?


Removal & Installation

Print

NOTE The fuel filter is either on the left side of the firewall or next to the fuel pump near the left side of the fuel tank.

  1. Before servicing the vehicle, refer to the Precautions section.
  2. Relieve the fuel system pressure.
  3. Remove or disconnect the following:

    Negative battery cable Fuel filler cap Fuel lines from the fuel filter Fuel filter from the bracket

To install:
  1. Install or connect the following:

    Fuel filter to the bracket Fuel lines to the fuel filter Fuel filler cap Negative battery cable
  2. Start the engine and check for leaks.


  3. 0900c152801c13b0.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Using an open end wrench to push the quick disconnect coupler sleeves back-5-cylinder models
    Using an open end wrench to push the quick disconnect coupler sleeves back-5-cylinder models



NOTE The fuel filter is either on the left side of the firewall or next to the fuel pump near the left side of the fuel tank.
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Relieve the fuel system pressure.
  3. Remove or disconnect the following:

    Negative battery cable Fuel filler cap Fuel lines from the fuel filter Fuel filter from the bracket

To install:
  1. Install or connect the following:

    Fuel filter to the bracket Fuel lines to the fuel filter Fuel filler cap Negative battery cable
  2. Start the engine and check for leaks.

    0900c152801c13b0.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Using an open end wrench to push the quick disconnect coupler sleeves back-5 cylinder models
    Using an open end wrench to push the quick disconnect coupler sleeves back-5 cylinder models



NOTE The fuel filter is either on the left side of the firewall or next to the fuel pump near the left side of the fuel tank.
  1. Before servicing the vehicle, refer to the Precautions Section.
  2. Relieve the fuel system pressure.
  3. Remove or disconnect the following:

    Negative battery cable Fuel filler cap Fuel lines from the fuel filter Fuel filter from the bracket

To install:
  1. Install or connect the following:

    Fuel filter to the bracket Fuel lines to the fuel filter Fuel filler cap Negative battery cable
  2. Start the engine and check for leaks.

    0900c152801c13b0.jpg enlarge_icon.gifenlarge_tooltip.gif

    Fig. Using an open end wrench to push the quick disconnect coupler sleeves back-5-cylinder models
    Using an open end wrench to push the quick disconnect coupler sleeves back-5-cylinder models


On these models, the fuel filter is part of the fuel pump assembly. Refer to Fuel Pump removal and installation.

May 12, 2012 | 2005 Volvo V50

1 Answer

After traveling, there was high air pressure in the fuel tank? is it normal?


Are you sure is was high air pressure and not vacuum? Most modern automobiles have fuel tank purge systems which will place the fuel tank under low pressure (or vacuum). If you remove the fuel cap immediately after travelling a long distance or while the engine is still running, it could be normal to hear a "hissing" sound when removing the cap as the pressure in the tank will equalize when the cap is removed.

Apr 06, 2012 | Toyota RAV4 Cars & Trucks

1 Answer

When i fuel up 88 blazer, there is pressure building in the gas tank, ( it hisses when i open the cap) and when driving down the road it seems to be very sluggish and sometimes even dies... but this seems...


the pressure in the fuel tanks supposed to be there,your fuel pump,,,pumps 180lbs of pressure to the engine all the time.your engine requires it. so if you do not hear that pressure when you remove the gas cap,you do have a problem. but it does sound like you have a possible fuel injector or maybe 2 fuel injectors clogging.simple to give you solution.add lucas fuel injector cleaner to your fuel tank.a clogged fuel injector will seem like an engine misfire also,just because fuel bulds in the cylinder at times,then the spark plug fires and then BOOM the engine misses while in motion. sound familiar? the lucas costs $5.00 and will treat 25 gallons of fuel. try this,and please let me know if this helps!!

Mar 05, 2011 | 1988 Chevrolet Blazer

2 Answers

No pressure in gas tank when the cap is opened.


I am not sure I understan tghe question. You should not have a lot of pressure in the tank. There are hoses that capture any vapors that are in the tank and eleviate pressure build up.
Most often I have found the engine light on because of gas tank vent, such as loose
or bad gas cap or the vent valve stuck open. The computer does a cycle ever so often
and maintains the vent pressure build up in the gas tank and vapor canister, and if the purge valve sticks open the computer gives a check engine light and code as the pressure is not in the vapor storage tank when called for.
If your worried about no pressure at all then I would change the gas cap and see if this helps

Feb 03, 2011 | 2000 Nissan Quest

1 Answer

Extreme hard start when warm. Keeps coming up


Have the cat checked,sounds like a restriction in the exhaust,or the return line to the tank is restricted,remove the fuel cap,and blow air back to the tank with compressed air,threw the return line,where the pressure regulator bypasses the fuel back to the fuel tank.

May 04, 2010 | GMC K3500 Cars & Trucks

2 Answers

How do i add coolent to the Rad, when there is no rad cap.


if the rad has no cap then there should be an external expansion tank, with a small water pipe running to the rad, this circulates the water, make sure you dont get confused with the windsheild washer tank, may sound silly but has been done lots of time!

Dec 15, 2009 | 1993 Buick Skylark

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