Question about 2007 Pontiac G6

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Does anyone have a diagram of a pontiac g6 2007 fuel system including gas tank?

I have a fuel leak coming from a small hose connected to tank . I need to know what that hose is called and I need a pic of the system.

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  • Pontiac Master
  • 1,253 Answers

Go to your favorite dealership or local auto parts store.

what you need is the fuel filler neck/hose assembly or the evap vent hose. They will have a computer there which you can visually identify what you need by way of dead reckoning.

Posted on Nov 30, 2014

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Posted on Jan 02, 2017

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SOURCE: Gas line is leaking.

You want to be very careful not to make any sparks while working on this. The obvious is smoking, banging metal tools around, etc. keep cell phones AWAY from the area. Pick up some rubber fuel line from the parts store. Be prepared for some gas leakage, have a plastic pan under the leak. Disconnect the line at the tank, have a piece of new hose ready to push on over the line to as close to the tank as you can, have the end away from the tank plugged up temporarily with a pencil or something that fits snug in it, then remove the rubber hose on the filter, and connect new line from tank to filter, check for leaks, hopefully it is the rubber line you replaced, or the end of the metal line, so the new hose will hopefully cover the corroded leaking area. Clamp and Dry off area and see if you can spot any leaks.

Posted on Apr 15, 2009

  • 12 Answers

SOURCE: engine not getting gasoline

CHECK TO SEE IF YOU HERE THE FUEL PUMP START AFTER YOU TURN THE KEY ON. FUEL PUNP, FILTER, FULE PUMP RELAY.

Posted on Apr 29, 2009

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SOURCE: Kink in fuel hose to gas tank, is that a problem?

The problem is that it could vapr lock and you could be stuck on the freeway. Use the proper hose which is a molded hose.

Posted on Jul 05, 2009

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SOURCE: 1998 pontiac sunfire leaking coolant from big pipe

if its the pipe on the engine then its the thermostate housing, if its in the front it would be th top of your radiator

Posted on Oct 26, 2009

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  • 175 Answers

SOURCE: Smell of fuel and minor trace of gas on bottom of tank

could be several things 1. faulty EVAP canister (near fuel tank) 2. loose (quick)disconnect fitting 3 damaged or loose rubber filler neck(common) I could go on and on.... you just have to look.

Posted on Feb 02, 2011

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2000 Town Car - 3 codes (P0307 - I believe misfire on #7) but P0430 & P0442 I don't know


P0430 - Catalyst System Efficiency Below Threshold (Bank 2) Indicates Bank 2 catalyst system efficiency is below the acceptable threshold.
  • Use of leaded fuel
  • Damaged HO2S
  • Malfunctioning ECT
  • High fuel pressure
  • Damaged exhaust manifold
  • Damaged catalytic converter
  • Oil contamination
  • Cylinder misfiring
  • Downstream HO2S wires improperly connected
  • Damaged exhaust system pipe
  • Damaged muffler/tailpipe assembly
  • Retarded spark timing
Compare HO2S upstream & downstream switch rate. Under normal closed loop fuel conditions, high efficiency catalysts have oxygen storage which makes the switching frequency of the downstream HO2S quite slow compared to the upstream HO2S. As catalyst efficiency deteriorates, its ability to store oxygen declines and the downstream HO2S signal begins to switch more rapidly approaching the switching rate of the upstream HO2S. Once beyond an acceptable limit the DTC is set. Catalytic converter bad !


P0442 - EVAP Control System Leak Detected (Small Leak) The PCM monitors the complete EVAP control system for presence of a small fuel vapor leak. The system failure occurs when a fuel vapor leak from an opening as small as 1.016 mm (0.04 inch) is detected by the EVAP running loss monitor test.
  • After-market EVAP hardware (such as fuel filler cap) non-conforming to required specifications
  • Small holes or cuts in fuel vapor hoses/tubes
  • Canister vent solenoid stays partially open on closed command
  • Damaged, cross-threaded or loosely installed fuel filler cap
  • Loose fuel vapor hose/tube connections to EVAP system components
  • EVAP system component seals leaking (EVAP canister purge valve, fuel tank pressure sensor, canister vent solenoid, fuel vapor control valve tube assembly or fuel vapor vent valve assembly)
EVAP Leaks P0442 and P0455

May 27, 2017 | Lincoln Town Car Cars & Trucks

1 Answer

Replaced head gasket. now check engine light is on with a p0442 code. are there any evap hoses that I can inspect for cracks or damge since the gasket was replaced.


Tom, Yes, you should check all evap hoses for cracks and leaks.
Common Problems That Trigger the P0442 Code
  • Defective or damaged fuel cap
  • Distorted or damaged Fuel Tank Filler Neck
  • Small tear or puncture in the Evaporative system hose(s) and/or Carbon Canister
  • Defective Fuel Tank Sending Unit gasket or seal
  • Small split in a seam of the Carbon Canister
  • Defective Evaporative Vent Valve and/or Evaporative Purge Valve
  • Defective or damaged Fuel Tank
  • Defective Fuel Tank Pressure Sensor
  • Defective Leak Detection Pump
  • Slightly loose and/or worn clamps or hardened O-rings anywhere in the EVAP system Check the attached links,
    "I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
Engine Vacuum Leaks Tweet

https://books.google.ca/books?id=RLBuCgAAQBAJ&pg=PT523&lpg=PT523&dq=how+to+check+evap+hoses+for+cracks+and+leaks&source=bl&ots=tXENnJRaXU&sig=b78MxmS0N_fvBD0_lS0QzURuz2U&hl=en&sa=X&ved=0ahUKEwi4kpbz0LbLAhVju4MKHegzC18Q6AEITTAI#v=onepage&q=how%20to%20check%20evap%20hoses%20for%20cracks%20and%20leaks&f=false

How Diagnose Check Engine Light Code P0456 Small EVAP Emission Leak

Volvo S70 Evap Small Leak Common Problem P0442 Charcoal Canister Hose Fix

Mar 10, 2016 | 2000 Chevrolet Malibu

1 Answer

2002 Buick Rendevouz leaking fuel after changing fuel pump


check and see if there is still a leak when you are not putting gas in it if it is still leaking, lower the tank and check all the hose connection for leaks. replace hose and clamps turn key to run but not start with tank lowered look for leaks

Apr 23, 2013 | 2002 Buick Rendezvous

1 Answer

Engine scan codes are P0442, P0456 , can you please help me with these codes


P0442 - Evaporative Emission Control System Leak Detected (small leak)
This indicates a fuel vapor leak in the EVAP control system. It means a very small leak has been detected. In fact, the leak can be from a hole as small as 0.04" in diameter. The (EVAP) emission control system prevents the escape of fuel vapors from a vehicle's fuel system. Fuel vapors are routed by hoses to a charcoal canister for storage. Later, when the engine is running a purge control valve opens allowing intake vacuum to siphon the fuel vapors into the engine.

Symptoms: You likely won't notice any drivability problems.

Causes: A code P0442 most likely means one or more of the following has happened:
A loose or improperly affixed gas cap
A non-conforming gas cap (i.e. not factory/original brand)
A small leak/hole in a fuel vapor hose/tube
Other small leak in EVAP system
Faulty vent o-ring seal

Possible Solutions: With a P0442, the most common repair is to:
Remove and reinstall the gas cap, clear the codes, and drive for a day and see if the codes come back.
Otherwise, replace the gas cap, or
Inspect the EVAP system for cuts/holes in tubes/hoses



P0456 - Evaporative Emissions System - Small leak detected
The Powertrain Control Module (PCM) at different times performs various tests on the EVAP system. OBD II Enhanced EVAP systems are in place to keep fuel tank vapors from venting into the atmosphere, and instead purges them into the engine to be burned. Regular pressure tests are conducted by the PCM to monitor the sealed system for leaks. The PCM monitors the EVAP system pressure by watching the fuel tank pressure (FTP) sensor. When the sensor indicates a small leak in the EVAP system, this code is set.

Potential Symptoms: There will likely be no noticeable symptoms other than the Malfunction Indicator Lamp (MIL). This is because the EVAP system is a closed system and only controls fuel tank vapors, not engine management.

Causes: Usually this P0456 code is caused by an incorrect or faulty gas cap. Filling the fuel tank with the engine running could conceivable cause this code as well or if the cap wasn't properly tightened. Any of the following could also be the cause:
A small leak in any of the EVAP hoses or fuel tank hoses
A small leak in the purge valve or vent valve
The EVAP Canister may be leaking

Possible Solutions: First, using a scan tool activate the vent solenoid, sealing the system. Then monitor the fuel tank pressure (FTP) sensor. If the system is sealing properly, the number will stay consistent. If is isn't, the pressure sensor will show that as well. If the system slowly leaks, use a smoke machine and watch for smoke exiting the system at any EVAP component. Any where there is smoke exiting the system, that is the faulty component. Do not pressurize the EVAP system with air pressure. Doing so can damage the purge and vent solenoids in the system.


Test it; keep us updated and remember to rate this answer.

Jun 03, 2011 | 2005 Dodge Grand Caravan

3 Answers

P0456 error code on a 2003 Mits. Galant


P0456 = "Evaporative emission (EVAP) control system leak detected (very small leak)."

Feb 25, 2011 | Mitsubishi Galant Cars & Trucks

4 Answers

The code is p0442 what dose that mean and what part do i need


this is a small leak in the evaporative emission control system.Most common cause is a loose or faulty gas cap but not always, Sometimes the check valve in the gas cap doesn't seat properly allowing the gas tank pressure to bleed down. The EVAP system needs to see a positive pressure in the tank.

Jun 05, 2010 | 2004 Chevrolet TrailBlazer

2 Answers

I have a 2003 Trail Blazer with code 442 coming up (small leak in the EVAP system). I know of other owners with the same trouble. Replaced the gas cap without results. It seems to be a common problem, what...


  • Gas cap loose or improperly affixed
  • A non-conforming gas cap (i.e. not factory/original brand)
  • A small leak/hole in a fuel vapor hose/tube
  • Other small leak in EVAP system
  • Faulty vent o-ring seal
  • Thats what your looking for....

    Jan 25, 2010 | 2003 Chevrolet Trailblazer Ext

    1 Answer

    Fuel leaking from flexi pipe beside passenger rear


    The only thing i can think of is, its a vent tube of some sort, but i can't understand why it comes out from under fuel tank, unless it runs from top of tank around under tank and back up and it looks like its commimg from bottom of tank.

    Mar 09, 2009 | 1998 Subaru Legacy

    1 Answer

    My taurus failed due to code p0442 ecap emiss ctl sys leak detected (small leak)


      Continuous Memory Diagnostic Trouble Code (DTC) P0442 indicates that a fuel vapor leak has been detected [as small as 0.10 cm (0.04 inch)] in the Evaporative Emission (EVAP) system.
      Note: Prior to performing the following diagnosis inspect the Canister Vent Solenoid (CV) for contamination. A situation may exist where contamination holds open the Canister Vent (CV) solenoid enough to set DTC P0442 and also plugs the port to atmosphere enough to keep system from being vented quickly.
      • After market parts and accessories nonconforming to the EVAP system specifications.
      • Damaged, cross threaded or loosely installed fuel filler cap.
      • Small holes or cuts in fuel vapor hoses/tubes (EVAP canister tube, EVAP canister outlet tube or EVAP return tube) in the EVAP system.
      • Loose fuel vapor hose/tube connections to EVAP system components.
      • EVAP system component [EVAP canister purge valve, fuel tank pressure (FTP) sensor, canister vent (CV) solenoid, fuel vapor control valve tube assembly or fuel vapor vent valve assembly] seals leaking.
      • CV solenoid partially open when commanded closed.
      • EVAP canister leaking.
    • Check for presence of fuel filler cap.
    • Verify that the CV solenoid is properly seated on the EVAP canister (if possible).
    • Visually inspect for cut or loose connections to fuel vapor hoses/tubes in following locations:
      • EVAP canister to EVAP canister purge valve.
      • EVAP canister to fuel vapor vent valve assembly.
      • fuel vapor control valve tube assembly to fuel tank (if applicable).

    Jun 26, 2008 | 1997 Ford Taurus

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