Question about Coleman 2 Burner Compact Gas 425F499G Grill

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Will not hold pressure when fuel tank pressurized

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Lube or replace pump seal try Vaseline on seal pull d clip and twist out pump rod end of pump rod apply lube or vaseline to round tab and to seal under retaining clip re assembly if works good if continues replace-walmart coleman= k mart=gander=any outdoor/sports goods carry

Posted on Oct 07, 2009

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Why would fuel be going pumping back and fourth from tank to tank


probably a faulty pressure regulator that is allowing the fuel to return to the tank and not holding pressure in the fuel manifold

Nov 11, 2015 | Cars & Trucks

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I'm trying to change the fuel pressure regulater valve on my 2004cts cadilac.I checked the fuel rail not there. Someone told me It is on top the gas tank.Please help me locate it.


What engine does yours have ? 3.6 L engine the regulator is inside the fuel tank !
2.6 an 3.2L is on the fuel rail !
5.7L inside fuel tank !
The fuel pressure regulator attaches to the fuel return pipe on the fuel sender assembly. The fuel pressure regulator is a diaphragm-operated relief valve. A software bias compensates the injector on-time because the fuel pressure regulator is not referenced to manifold vacuum. The injector pulse width varies with the signal from the mass air flow (MAF)/intake air temperature (IAT) sensor.
With the engine running at idle, the system fuel pressure at the pressure test connection should be between 380-410 kPa (55-60 psi). With the system pressurized and the pump OFF the pressure should stabilize and hold. If the pressure regulator supplies a fuel pressure which is too low or too high, a driveability condition will result.
You would have to change The modular fuel pump sender assembly !
Now what makes you think you need to have it changed ?
Now

Jun 16, 2015 | 2004 Cadillac CTS

1 Answer

How do i see that my fuel pump is bad?


  1. Discharge the pressure in your fuel system by either removing the fuel pump fuse or disconnecting the inertial cutoff switch and starting the car, allowing it to run until it stalls out. Then turn the key off, remove the key, and let the car sit for a minute or more.
  2. NOW REPLACE YOUR FUEL FILTER (This will save time later.)
  3. Attach a fuel pressure test meter to the test port on the fuel rail.
  4. Insert your key and turn the key switch from OFF to ON (not "START" but ON) three times, holding it at OFF and ON for between 1-2 seconds each time.
  5. Return the key switch to OFF
  6. Look at the fuel pressure gauge. It should read at least 35 p.s.i. (minimum), and should HOLD that pressure for at least ten minutes. If it does not hold the pressure, DISCHARGE THE FUEL PRESSURE again as described above, and REPLACE THE FUEL PRESSURE REGULATOR.
  7. RE-PRESSURIZE THE FUEL SYSTEM AGAIN (the key switch off & on thing above), and then start the vehicle normally. Look at the fuel pressure. Is it at least 40 p.s.i.? YES? Good so far. NO? Either the fuel pump is bad, you have a fuel leak somewhere (should be obvious), or the fuel pickup strainer in your gas tank is clogged.
  8. TURN THE KEY BACK OFF, and be sure you're retaining pressure. If the pressure begins falling immediately, suspect either a stuck injector (would make the car run rough and the "CHECK ENGINE" light stay on), or a defective check valve at the fuel pump (which means you need a new fuel pump).
  9. If the pressure fell with the key off, turn the key back ON. Does the fuel pump have to run for more than 3 seconds to regain full pressure? If so, either your fuel pump is bad or your fuel strainer is clogged. Either way you will need to pull the pump and strainer out of the tank to check.
  10. If your strainer is clogged, your pump is probably fine... just replace the strainer. If the strainer is clean, your pump is bad. Replace your pump.
  11. DON'T WASTE TIME TRYING TO SAVE THE GAS IN THE TANK. I guarantee it is contaminated with water, rust, and other garbage. DISPOSE OF ALL REMAINING FUEL IN YOUR GAS TANK, AND REPLACE IT WITH NEW FUEL.

Jul 20, 2014 | 2005 Pontiac Vibe

1 Answer

Gas leaking from my tank switch


Use compression barb fittings on the pressure side with fuel injection line NOT REGULAR FUEL HOSE THE REGULAR HOSE WONT HOLD UP TO THE PRESSURE. The return line can be regular fuel line because of the low pressure.

Feb 02, 2014 | 1987 Ford F 150

1 Answer

88 ranger 2.3L EFI NEW tank,low and high pumps,both filters, (FPR). will not hold fuel pressure and will not start


Check the fuel pressure regulator on the end of the injector rail (on the engine) This is controlled by manifold vacuum and may be faulty.

Nov 15, 2012 | Cars & Trucks

1 Answer

Fuel pressure reading at startup


should be at least 55 psi with key on engine off. fuel pressure should hold there with no rapid drop. if pressure is not 55 psi then pump is weak and truck will not start. if fuel pressure drops fast then most likely bad fuel regulator or cracked line on pump inside fuel tank.

Jul 13, 2011 | 1999 Chevrolet Silverado 1500

1 Answer

What is the codes means po452 and po453


Hi,

The codes indicate a problem with the fuel tank pressure sensor. One code is for no volts, the other is for high volts. Without a scanner hooked up to monitor. I have to go with you have a bad fuel tank pressure sensor. this is an emissions control sensor. the tank is pressurized and the sensor monitors it for leaks etc. the tank must come out as it is mounted on top of fuel pump module

REMOVAL PROCEDURE

  1. Raise the vehicle.
  2. Remove the fuel tank. Refer to Fuel Tank .
  3. Remove the fuel tank vapor pressure sensor electrical connector.
  4. Remove the fuel tank pressure sensor.
INSTALLATION PROCEDURE
  1. Install the fuel tank vapor pressure sensor.
  2. Install the fuel tank vapor pressure sensor electrical connector.
  3. Install the fuel tank. Refer to Fuel Tank .
  4. Lower the vehicle.
Thanks.

Feb 02, 2011 | 2001 Chevrolet Blazer

1 Answer

My fuel pressure is not holding how do i know if it's my fuel pressure regulator or fuel pump


MEASURE FUEL PUMP PRESSURE AT FUEL FILTER CONNECTOR. ATTACH PRESSURE GUAGE TO FITTING COMING FROM TANK. MAKE SURE THER ARE NO LEAKS FIRST THEN HAVE SOMEONT TURN THE IGNITION ON CK. GUAGE PRESSURE TURN KEY OFF PRESSURE SHOULD REMAIN CONSTANT SINCE PUMP IS DEAD HEADED ( NO RELIEF/ REGULATOR) IF PRESSURE FALLS ,PUMP INNER CK VALVE IS LEAKING. IF PRESSURE DOES NOT FALL THEN SUSPECT REGULATOR

Aug 06, 2010 | 2001 Pontiac Firebird

2 Answers

Fuel tank holds extremely hi pressure after changing out fuel pump on a 2000 silverado 5.3 engine.the more distance you drive the higher the pressure gets in tank.


You may be referring to the lowering of pressure in your fuel tank. As fuel is used, the pressure in the fuel tank drops to prevent vapours in the tank escaping to atmosphere. Ths is to comply with emission standards. The further you drive, the lower the pressure. When you remove the tank cap, air rushes in which makes you think it's coming out.

Mar 22, 2010 | 2000 Chevrolet Silverado 1500

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