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Air bubbles in fuel tank

I can hear air bubbles in my gas tank

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Can you be a bit more specific, perhaps? You might just be hearing it slosh around, this is normal.

Posted on Oct 16, 2013


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Posted on Jan 02, 2017

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SOURCE: Eratic idling and misfiring under pressure

confirm that the fuel pump delivers the proper pressure to the injectors

Posted on Mar 08, 2009

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SOURCE: Re-Fueling: Gas pump shuts off ,like there is a

Do not push nozzle all the way in. Pull it out about two inches.

Posted on Jun 27, 2009

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SOURCE: Hi I am working on

Disconnect ( or at least loosen) the fuel line as close to the engine fuel delivery system as you can and see if there is fuel pressure. You may have a vapour lock. If you do get pressure how much ? Is it sufficient to supply your requirements. A "new fuel pump" does not always mean a "good fuel pump" - from experience!!! If you do not have fuel at the engine work back to each fuel line connection to were there is fuel pressure if at all. I am not a Nissan expert but the principles are the same for all. You do not say if it is fuel injected or carburated. FI requires higher pressures than carbs. Hope this helps. Let me know how you do in your efforts. Thanks Good luck.

Posted on Jan 23, 2011

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SOURCE: changed fuel pump now i can hear pump turn on but its not pumping any gas out of tank, i disconnected line at tank still no gas.

you either got sold a bum pump or the intake orifice is clogged...possibly a cap?

Posted on May 18, 2012

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2002 Montana ran out of gas put new fuel pump in new filter new fuel pressure regulator getting gas have pressure if I fill cab with gas it runs but will not start other wise

Did you remove all air from the tubing from the gas tank to the fuel pump? Read more on the net about air bubbles in the fuel line.

Sep 11, 2014 | 2002 Pontiac Montana

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Ryobi brushcutter runs good on full tank gas but at a half a tank it starts spitting and sputtering...why

CK for split fuel lines. You can ck when fuel is low by trying to prime with bulb, if you see air bubbles in line , split line in tank.

May 03, 2014 | Cars & Trucks

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Car stalls while driving but starts back up

When you fill the car with gas if you dont stop when it is full and you continue to make the tank take more, you dont leave any room for expansion. The fuel expands and can cause orings to fail when it gets warm. If you have trouble filling the tank because of the issue that you stated, the problem might be due to a collapsed filler hose. If you are running the engine when you fill it, the noise is from the fuel return line.

Dec 02, 2013 | 2005 Mazda 3

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Its not getting anyfuel to the fuel pump

The fuel has to be drawn to the pump with vacuum made by the fuel pump. Disconnect the feed line to the pump and install a vacuum gauge, crank the engine over and see if it has 8-10 in of vacuum. If not the pump is not working properly. If it does, check the fuel lings that go to the tank. If there is a crack, it will not pull the gas to the pump(like a straw with a hole in it). If that all looks fine, you may have an obstruction in the tank. Back flush the fuel line with air and listen to see if you can hear air of bubbles in the tank NOTE if there is a lot of fuel in the tank,some gas may splash out. If you hear air, Blow air from the tank forward to the disconnected pump feed line. If there is fuel in the tank it should flow out. If not you may need to R&R the tank to find a problem

Nov 03, 2013 | 1983 Chevrolet K1500

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I have a 1998 nissan turns over but will not start,what could it be?

The fuel pump may have quit on you. The only way i know how to kinda tell right away is to turn the key to ACC with no radio and no blower running in a somewhat quiet environment and listen for the fuel pump to start pumping. if you don't hear the pump then it could be time for a new one of if your lucky a new fuse for it. If you do hear it pumping then if could also be gas line blockage from whatever debris floating in your gas tank. Word of advice if it turns out to be the fuel pump quit, try to not run your vehicle on empty or below 1/8th of a tank because If the pump starts sucking up air bubbles or anything floating in the tank then it will significantly decrease the life expectancy of the fuel pump. Good luck!

Jun 17, 2013 | Cars & Trucks

1 Answer

Ran out of gas on my 1998 ford explorer an now it wont start i put gas an it just cranks but no start any solutions out there

Make sure you have at least 5 gallons of gas in the tank. If you hear the fuel pump power up test the fuel pressure at the end of the injection rail if you have fuel injection. If you have a carburetor injection system remove the air cleaner so you can prime the Carb and pour an ounce or 2 directly into the carb and see if it will start. If it doesn't you may have a much larger problem. If it doesn't start when you prime the carb you need to do a compression check on the cylinders to see if you have lost compression on the cylinders. Being this old of a vehicle it is possible the Timing Chain broke which gives you the same symptom as running out of gas when it happens and the motor is running. If you have actual fuel injection with an injection rail, assuming the fuel pump is powering up (You should be able to hear it), you can bleed air off the line in most cases using the check valve at the end of each rail. It is sometimes covered by a small dust cap and when you remove the cap it looks like a standard valve you would find in any tire stem. You can release the air bubbles from the line like you would release the air from a tire by pressing the center of the check valve. That will remove the possibility that you have air bubbles in the line.

Nov 24, 2010 | 1998 Ford Explorer

1 Answer

My carburetor isn't getting any gas to it and i just replaced the mechanical fuel pump what other problems could there be and how do solve them

Fuel line between tank and pump could be blocked. Remove fuel cap and Disconnect fuel line from inlet side of pump and blow back. If line is clear you should hear bubbling from tank filler. It could be that you have picked up a batch of dirty fuel that has clogged the gauze input filter that is inside the fuel tank.

Aug 18, 2010 | Chevrolet Silverado Cars & Trucks

2 Answers

Honda passport ran out of gas. now won't start. Could be gas filter?Put 5 gals of gas in tank. Will start with gas added to air flter intake, but won't stay running

It's possible that you have an air bubble in the fuel line. This blocks fuel from reaching the engine. To clear it, you will have to bleed the line at the fuel filter.

The other possibility is that the fuel pump is not working. Turn the ignition key to the on position. You should be able to hear the fuel pump humming. If not, check the fuel pump fuse, in the fusebox under the hood. If the fuse is ok, you will need to trouble-shoot the pump.

Mar 16, 2010 | 1998 Honda Passport

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