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Discussion Starter · #1 ·
The single most frustrating thing, worthy of fixing yesterday is:

The fuel filler tube and/or fuel vent system being such a diameter that it causes most fuel pumps to shut off ~2gals before the tank being filled that further causes the owner to have to "trickle" the fuel into the tank in order to get a full fuel tank.

This engineering error burns time for all FJ Cruiser owners unless they choose to drive them around without being able to fully fill the tank. It also promotes the chances of over-filling (aka - "topping off") which can cause more fuel spills during fill ups.

Otherwise, nice rig...
 

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Discussion Starter · #4 ·
It is an easy fix, and I will show all that make it to the Summit how.:wave:
Don't make me wait, I have 6k miles to drive this summer and the FJSummit is at the end. Please don't make me suffer any longer than necessary and share you superior knowledge...
 

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Not superior, just figured it out when making Aux. fuel system. When you fill up two tanks you do not want to stand around all day. You do live East of me, Let me see if I can get to Work on A water tank in your area before the Summit.
 

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Add me to the list .
Redboat
 

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please tell :signed:
 

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Why would you hold out?? This forum is all about sharing ideas.. Show us what ya got.
 

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I am not a vender, the fix for the fuel fill was found when I was making the fuel filler pipe mod for my AUX. rear mounting fuel tank system. If I do the mod on some one's FJ then they can post a tell all and that will be fine with me. I am currently working on a MAF. TANK fill pipe fix and that person can post a tell all or not. If I just post a HOW TOO and you do it wrong then I will get the short end of the stick. Toyota should have fixed this the first time they filled the tank! :wave:
 

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Hmmm, I never thought I had a problem, but now that I think of it when I refill at 1/4 tank it only takes around 10 gallons, but the guage reads a little past full...
I had always just figured it was taking into account the reserve when the gas light comes on.
I will see how much more I can squeeze in after it stops next time.

Maybe BBhog can PM a moderator with the info and they can post it with a disclaimer??
 

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That's funny... I've heard some folks have to "baby", for lack of a better description, the pump/trigger on the FJ. I never had it click off until last weekend (5 months)! I have a Kroger about 100 yards from home and after installing the Scangauge I thought I'd just top it off there, instead of going down to the Amoco that I normally use. I pulled the trigger and it clicked off, tried it again and it clicked off. The pump had a lot more pressure than the stations I normally use! It was like the trigger on bad variable speed drill. Ron

Some have said.. A 19 gal tank should have app 4 gal. remaining at the light... I haven't tested this on the FJ, however on my Rubicon's (TJ) it was true.. I drove them to empty to see!

Oh teach me Obi-wan of the gas station pump...
 

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I am not a vender, the fix for the fuel fill was found when I was making the fuel filler pipe mod for my AUX. rear mounting fuel tank system. If I do the mod on some one's FJ then they can post a tell all and that will be fine with me. I am currently working on a MAF. TANK fill pipe fix and that person can post a tell all or not. If I just post a HOW TOO and you do it wrong then I will get the short end of the stick. Toyota should have fixed this the first time they filled the tank! :wave:
Hope you're talking about me, BBhog. I'm still waiting and will tell ALL as soon as you get the fix to me!!! :rocker:

BTW, I never had any problem filling the OEM tank before I added the MAF tank and filler tube.
 

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Discussion Starter · #20 ·
That's funny... I've heard some folks have to "baby", for lack of a better description, the pump/trigger on the FJ. I never had it click off until last weekend (5 months)! I have a Kroger about 100 yards from home and after installing the Scangauge I thought I'd just top it off there, instead of going down to the Amoco that I normally use. I pulled the trigger and it clicked off, tried it again and it clicked off. The pump had a lot more pressure than the stations I normally use! It was like the trigger on bad variable speed drill. Ron

Some have said.. A 19 gal tank should have app 4 gal. remaining at the light... I haven't tested this on the FJ, however on my Rubicon's (TJ) it was true.. I drove them to empty to see!
Yup, that is the issue. I can go to a station that must have "older" pumps where if there are 3 or 4 others pumping, the volume is such that I don't have to "baby" it in. But, as soon as those others stop pumping, I have to put it on the 2nd notch to slow down the flow. Otherwise, got to do the "baby" thing.

It is really simple physics, the diameter of the filler tube is at a diameter that won't allow the air to escape at a rate which won't trigger the back pressure sensor on the gas pump handle at a given volume. It is as simple as putting a stop watch to the filling process, divide by the amount and get a "gal/sec" fill rate. Over a certain rate, it trips "most" pump handles.

No different than when I fill my wife's diesel Passat. If I go to a "normal" diesel pump, I get a certain flow rate but if I hit a "truck stop" diesel pump, it fills probably twice as fast. But, VW clearly built the fill tube in this vehicle to handle the higher flow where Toyota did engineer the FJ fill tube to handle "normal" pump flow volume...
 
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