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2000 Isuzu rodeo fuel tank filler neck leaks whenever I fill up with gasoline. Is there someway for me to fix this or do I need to replace it entirely?

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Hello, It may be rusted out right under the fuel line so it is my habit NOT to mess with gasoline. I would look into replacing it. If you know how to replace it, I would do it; if you do not know how to, I would get someone to replace the receiving line.
Hope this helps,

Posted on Dec 31, 2010


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1 Answer

When i put gas in a certain point it runs out from underneath

My Rodeo did that and we found that the O-ring that seals where the fuel pump sit's in the tank was shot and leaking. To fix you have to run your tank low and find a pit where you can drop the tank and remove the fuel pump and install a $.50 O-ring......Gary Arnold

May 01, 2014 | 2000 Isuzu Rodeo

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Roll neck gas filler need to be replace, how do I do that?

unbolt/clamp it , and bolt back in a new one?
see the FSM under fuel tank. and body chapter., look there, for how to work on your car.
main filler rusted through or collision damage?
no photo posted. how can we guess reality of the issue here.

Apr 10, 2014 | 1999 Isuzu Rodeo

1 Answer

Gas tank

When you say it only leaks when you fill it up - do you mean WHILE you are at the pump, adding fuel to the tank , or WHEN the tank is full??
If it happens during refueling, the filler neck may have rusted allowing some fuel passing thru it en route to the tank to leak out. The filler neck can be replaced - and may even be subject of a recall. Contact you dealer to make sure it hasn't been recalled for these types of problems before spending *your* money to fix a manufacturer's defect.
Many times, this indicates a tank that has a hole near the top of the tank - which is much better than one at the bottom. There are products - and professionals - that can repair (or replace) these problems / parts. Locating and accessing the hole can be another story however.
Removing the tank for repair / replacement can cause you to incur additional expenses to replace fuel senders, etc. that seem to be fragile enough to break during removal.

Jun 06, 2013 | Mercedes-Benz E320 Cars & Trucks

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When putting gas in my 2004 Kia amanit the fuel nozzle kicks off. How do I locate and fix the problem

HI Bridgette,

Due to the different shapes of fuel tank filler necks in cars & trucks, it may be necessary to vary one or more things to allow fuel to flow uninterrupted until the tank is really full.

The main problem can come from the new "vapor recovery" gasoline pumps. These pumps and hoses actually recover gasoline fumes from your tank as the liquid gasoline displaces the air / fumes in the tank is it is being filled. If gasoline flow is started at full blast, it can splash back slightly, causing liquid to be pulled back by the pump - so it shuts off. So, start with a slow rate of filling and gradually increase flow rate to maximum over 5 to 10 seconds. If it still shuts off, try some of the suggestions below.

First, don't fill at maximum flow rate from the pump - that is, don't set the nozzle for wide open. Select one of the other "latches" on the handle instead of the fastest flow and let the tank fill entirely at this rate.

Second, you should experiment a bit with the length of nozzle that you push into the tank's filler neck. If you push it in too far or too little, the pump nozzle can do what you're describing.

Third, try twisting the nozzle slightly so that it doesn't hang straight downward - a little to the left or right may provide a solution.

Lastly, try a different gas station. Their pumps may not be so picky with your tank's filler neck.

Good luck!

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1 Answer

On my 2001 rodeo the check engine lite came on and the only code that came up is po440, can you tell me what this is

This alarm concerns the function of the EVAP SYSTEM. This system monitors vacuum correctness. If a sufficient vacuum level cannot be achieved, a large leak or a faulty EVAP canister purge solenoid is indicated. It can be caused for the following reasons:
1) Disconnected or faulty fuel tank pressure sensor
2) Missing or faulty fuel cap
3) Disconnected, damaged, pinched, or blocked EVAP purge line.
4) Disconnected or damaged EVAP vent hose.
5) Disconnected, damaged, pinched, or blocked fuel tank vapor line.
6) Disconnected or faulty EVAP canister purge solenoid.
7) Disconnected or faulty EVAP canister vent solenoid.
8) Damaged EVAP canister.
9) Leaking fuel sender O-ring.
10) Leaking fuel tank or fuel filler neck.

Apr 13, 2011 | 2001 Isuzu Rodeo

1 Answer

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Sensor diagnosis? there is no sensor for the fuel neck, there is a pressure sensor that reads air pressure for the fuel tank, How do you know it needs a fuel neck? unless there is a crack, or a rust hole, I cant think of a reasone to replace it. you should be able to replace it if needed, A dealer will need to get that, or a salvage yard.

Oct 17, 2009 | 1999 Isuzu Rodeo

4 Answers

Gas leak on fuel filler neck, how can I fix this?

if it's a hose or pipe go to dealer or junk yard get another if broken clamp replace if neck part of tank call rad shop see if the can solder if you drain & pull tank

Aug 30, 2009 | 1995 Buick Regal

1 Answer

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Disconnect battery ground cable. Loosen fuel filler cap. Support underneath of the fuel tank protector Disconnect evaporative fuel hose at the canister. Disconnect fuel feed hose and fuel return hose near the fuel filter. Plug both ends of the fuel hoses to prevent fuel leakage. Disconnect air breather hose and fuel filler hose at the fuel filler neck. Cover fuel hose to prevent any dust entering. Remove the four fuel tank assembly fixing bolts at four corners of the tank. Let down the tank and disconnect the wiring connectors Remove fuel tank assembly along with protectors Remove retaining cover and roll over & float valve along with the evaporative fuel hose and pipe Remove fuel pump and sender assembly by removing the snap ring with the fuel hoses Remove protectors by removing the six fixing bolts

Jun 12, 2009 | 1999 Isuzu Rodeo

1 Answer

Fixing a leak between the fuel tank and the fuel filler neck

your best bet is to replace the fuel filler neck. the entire fuel system is a calibrated emissions system, meaning any changes to the specific setup may set a check engine light. you should be able to purchase a new fuel filler tube at your local dealer, not sure if parts stores carry those kind of parts. but you can try them too.

Feb 21, 2009 | 2004 Lincoln Town Car

2 Answers


hold filler nozzle back a bit and hold trigger halfway in

Nov 11, 2008 | 2000 Hyundai Accent

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