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The oxygen regulator diaphragm is not holding. Can I replace the diaphragm? If so where do I purchase them.

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It is not advised to replace anything in a regulator any wrong move on your part outside a dertified facility could cause a large explosion. Call ESAB Welding and order a new regulator there regulators have a lifetime guarantee and even if it is 30 yrs old they will replace it 100% free of charge

Posted on Jul 16, 2009


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+91 Astro van over fueling has a carburetor / two injectors, if one is unhooked it will start. sometimes when its cold it will run fine for 5 minutes, then start spraying fulbore and dies. If I...

You do not have a carburetor. It is a throttle body injection system. The coolant temperature sensor, oxygen sensor, map sensor and throttle position sensor all have to do with the fuel delivery. The ECM (computer/brain) collects information from these sensors and adjusts the fuel accordingly. Hold the throttle wide open and try to start it. Have your diagnostic codes read and make sure you put in the correct ECM for your vehicle. Check your fuel return line and your air filter.

Nov 04, 2017 | Cars & Trucks

1 Answer

Why does the scanner say 45 i have rich fuel

Either the injectors are letting in too much gas, or there is a restriction of the air supply. The oxygen sensor is sensing too little oxygen in the exhaust, so the computer set the running too rich code. It is possible too that the sensor my be at fault, especially if as old as the vehicle.
Look down the throttle body at the pattern of the fuel spraying out from the bottom of the injector(s). It should be a fine mist cone pattern spraying out. If it is dripping instead of spraying out in a cone pattern, the injector may be stuck open, and needs replacing or cleaning.
Is your air filter clean?
Sometimes the fuel pressure regulator is at fault-the internal diaphragm may rupture and let extra fuel into the engine through the vacuum hose on the regulator. If any evidence of gas in the vacuum hose to the regulator, it is probably bad.

Mar 04, 2014 | 1985 Chevrolet S-10

1 Answer

1996 cherokee Country Wagon

Hi Debra: I sugges to check this procedure...


Fig. 1: TBI fuel pressure regulator

  1. Remove the throttle body assembly from the vehicle as outlined in this section.
WARNING To prevent spring pressure release, hold the regulator housing against the throttle body while removing the mounting screws.
  1. Remove the three retaining screws that hold the pressure regulator to the fuel body.
  2. Disassemble the pressure regulator assembly. Note the location of the components for reassembly. Discard the gasket.
To install:
  1. Install a new gasket and the regulator assembly. Tighten the three retaining screws.
  2. Install the throttle body assembly as outlined in this section.

WARNING The pressure regulator diaphragm MUST be installed with the vent hole aligned with the vent holes in the throttle body and regulator housing!

Hope this helps; also keep in mind that your feedback is important and I'll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using Fixya, and have a nice day.

Dec 21, 2011 | Jeep Cars & Trucks

1 Answer

When I turn my oxygen tank on oxygen escapes from small holes on top of the regulator.

You regulator diaphragm is leaking. You will have to have it repaired or replace it.

Apr 17, 2011 | Firepower Oxygen Gas Regulator 4-80 PSIG...

1 Answer

Runs rough poor gas milage

There is a fuel pressure regulator on the fuel rail, and thats where the fuel return line hooks to. On that fuel pressure regulator is a vacuum line. Pull that vacuum line off the regulator and see if it is wet inside with gasoline. If it is not, and its dry, hook it back up. If it DOES have gas in the vacuum line, then there is a hole in the regulator diaphragm and the regulator needs replacing - simple task and $25-$100 depending on which one they used on your model truck. If this IS the issue - It is critical you replace the engine oil and filter , then again after 10 to 20 miles to get the gasoline our of the crankcase. Very important to engine life.

If not the above, then check to see if your oxygen sensor is functioning properly. They should be replaced every 60k miles.

Oct 03, 2010 | 1988 Ford Ranger

1 Answer

I can't adjust these gauges. How do I do it?

The only part of the gauge that adjust is the tee handle in the middle. the gauge on the left tells you the line pressure to the torch, the gauge on the right tells how much oxygen is in the bottle, usually on a K bottle it is 1800 to 2000 lbs. if you turn the tee handle and the left gauge that tells line pressure does not respond you probably have a bad diaphragm in the gauge. Seek qualified repair man. Thanks

Feb 02, 2010 | Victor CSR350D Oxygen Regulator

1 Answer

My oxygen regulator wont hold proper pressure. It just keeps going up.

Diaphragm needs replacing. Take it to the shop...this needs to be done correctly.

Jul 23, 2009 | Victor CSR350D Oxygen Regulator

1 Answer

Can't control pressure on victor oxygen regulator

One gage is fixed for tank volume the other is variable for you to set for process. if the variable gage dose not work you may have a bad diofram. You could purchase replacement repair parts at your welding supply store.

Mar 02, 2009 | Victor CSR350D Oxygen Regulator

2 Answers

Bucking on acceleration and sulfur smell

The smell of hydrogen sulphide used to be a side effect of catalysed engines before low-sulphur oils and fuels replaced the old-fashioned stuff.

The sulphur smell could be significant and mean either you have some dodgy fuel or maybe the engine is has too much fuel going through it and if it is misfiring there will be unburned fuel entering the cat.

Most acceleration misfires are caused by ignition faults so I suggest you begin your fault-finding by ensuring the plugs are good and the spark each receives is a powerful quality spark.

Sep 24, 2017 | 2002 Mazda Protege

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