Question about 2006 Isuzu i-350

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Refueling problem with my Isuzu

My problem is not that the gauge is indicating incorrectly, it is indicating correctly but I am unable to fill the tank to the top. This is borne out by the mileage I get, from what I see going into the tank and from what the fuel gauge is indicating after I have filled up, so all my observations are pointing to the fact that the tank is not filling the way it should. Is there perhaps a breather system in the tank that can get blocked and therefore prevent fumes from escaping? I cannot find a detailed decription of the fuel tank system anywhere.

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  • Isuzu Master
  • 20,617 Answers

So true
if this tank does not fill, at all gas stations its not the stations
easy no.
so is the car, is it?
the EVAP solenoid near the tank must work.
when you KEY off to fill tank (DO YOU)? the valve opens
letting air into the neck filler of all modern cars, for sure in USA.
its an EPA law here. for lower fumes, (gas fumes in usa is the #1 smog here so.... bingo)
why not just find the valve, and replace it or just clean it
most just get gummy and stick.
each model car , this can be different placements or if different engine that you never stated.
I-350
in uSA
2006?

Posted on Oct 25, 2016

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  • Expert
  • 121 Answers

Does the pump at the gas station just stop when you try and fill it up? There is a charcoal canister up towards the front engine compartment that the vent line runs to from the gas tank. You can check it and make sure it is not clogged but nothing can really cause a gas tank from not filling it up all of the way. I think you have a defective sending unit. You would have to take it to a certified mechanic to take a look at the gas tank if you feel it isnt filling up all of the way. They may have a special tool to check it. Hope this helps. Good luck. - Tech101

Posted on Jun 26, 2008

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6ya6ya
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Posted on Jan 02, 2017

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2 Answers

What type fluid transmission Isuzu Rodeo 2001 (430LE)


no job stated, (top of, or overhaul or just drain and fill)???????
nice double post, only changed, character case. to Upper
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USA rodeo, not Canada?
we are USA forum so....
ill guess, A/t for ATF fluid.
what to use, if car is still running, stock fluid, some are not.
ill read you the official service bull. TSB

4L30E/4L60E Transmission Fluid 2003 publ.

The correct fluid to use in all Isuzu vehicles equipped with the 4L30E or 4L60E automatic
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that means use DEXRON VI now. DEX 6. what is seen on the shell NOW, 2016.
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holds 18 pints, dry, fill
way less, simply drain in place. 6 pints falls out
if levels is ok now.
what you do measure what came out, drained and put back that exact amount.

Jun 22, 2016 | Isuzu Cars & Trucks

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Town and Country Van running out of gas and guage says half a tank what could be the problem?


If your fuel gauge is showing you in accurate readings this is normal to all vehicles that are not used to fill-up gas full regularly but sometimes the cause of the inacuracy is due to faulty float valve in the gas tank you need to replace it

May 09, 2014 | 2005 Chrysler Town & Country

1 Answer

Digital gas gauge reading incorrectly and inverted


sounds like a faulty sender unit or your just realy low on fuel before you spend any money on repairs try filling the tank up with fuel as if its been low for a long time the sender unit in the tank may be sticking the fuel will lube it and may start working again

Feb 22, 2014 | 2008 Honda Civic 1.8

1 Answer

Fuel tank warning lights - shows empty although full unable to determine when need fill-up


Have a look at the fuel gauge wire, where it is connected on to wiring at the top off the fuel tank. It may be corroded.

Aug 09, 2009 | 1999 Isuzu Rodeo

2 Answers

Check engine light comes on after refueling the vhicle. gauge doesn't read full, then it will. light goes out after a day or two.


Also, be sure to not over-fill the gas tank. When filling the tank, when it sounds full (you can hear gas gush up the filler neck) and when the filler clicks off the first time...don't be tempted to keep clicking more gas into the tank because over-filling can cause a variety of problems (including setting the light) and can eventually saturate/ruin the fuel vapor canisters.

Jul 28, 2009 | 2008 Chevrolet Uplander

1 Answer

Smog test will not pass


This code is send (in your case NOT SEND)
by the fuel sending unit.

Does your fuel gauge give incorrect of jumpy reading when it's full?

The quick fix is STOP TOPPING OFF the fuel tank when you are get gas.

Keep topping off will push the fuel tank float off it's sensor limit and eventually short or send OUT OF RANGE reading to the fuel gauge.

Fill your truck up to 3/4 tank full.

Drive it for 2-3 days or about 100 miles.
(this will fill the ready-ness data that DMV want)

If there is NO check engine light ON during the 2-3 days then give the smog test another shot.

DO NOT add fuel unit you complete the smog test.
===

The CORRECT method to fix your problem is to drop the gas tank and replace the fuel sending unit.

If you truck has over 140,000 miles on it then I will recommend you the change the WHOLE integrated fuel pump/fuel sending unit and fuel filter at the same time.

Jun 02, 2009 | 1999 Isuzu Rodeo

1 Answer

Having trouble filling car with fuel


There is air outlet in fuel line refueling point to tank this may clogged you need to replace the fuel line from the refueling point to fuel tank.......


Good luck....

Nov 23, 2008 | 2004 Toyota Camry

1 Answer

Refueling problem


The fuel sending unit could be bad or siezing up once the float gets near the top. The way they work is the higher the float the or lower the float the resistance changes and the information is sent back to the fuel guage. It could either be the sending unit which is located in the tank or it could be a bad fuel guage. The chances of the issue being the fuel guage is a lot more rare though. Good luck and keep me posted. If you found this solution helpful please rate it when you get a chance.

Thanks - Tech101

Jun 25, 2008 | 2006 Isuzu i-350

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