Duel fuel tank confusion

[QTUNNA]

Heya guys, I've just bought an 84 C10 shortbed out here in Australia and I'm unsure how the duel fuel tank system works. Does the fuel drain from one tank first then the other? Does it drain from both tanks simultaneously? What is the purpose of the fuel switch on the dash, am i meant to flick that for any reason? Any help would be appreciated thanks, cheers Chad

[donut]

Welcome.
Fuel switch on the dash is a selector for which tank you want. Tanks should act independently from one another, unless a previous owner has the 2 joined to act as one. (this would be apparent.)
With the factory setup, it is very possible to run 1 tank out of fuel with the other being full.

[Theoriginalsilverado]

Originally Posted by donut

Welcome.
Fuel switch on the dash is a selector for which tank you want. Tanks should act independently from one another, unless a previous owner has the 2 joined to act as one. (this would be apparent.)
With the factory setup, it is very possible to run 1 tank out of fuel with the other being full.

I second this.

[QTUNNA]

Thanks for your response, much appreciated.

[Plunkett]

I've got a question concerning dual tanks. My 87 gmc sierra came with dual tanks, but I swapped out the bed for one with a single tank. I want to remove the passenger side tank but what's the best thing to do with the fuel lines? Should I cap them off for the passenger side tank or run new lines from the drivers side and get ride of the valve and all?

[QTUNNA]

So if I was to do a few hundred miles on a trip, with the factory set up will one tank drain first and then automatically switch over to the other tank or will I sense that one tank has just been emptied and ill have to manually switch over to the other tank? Sorry if I seem naive, it's just that we don't have vehicles out here in Australia with duel fuel tank set-ups, cheers.

[willett]

You have to manually switch from side to side. If your left tank is getting low switch over to your full right tank and vise versa. Also if your not doing any long trips/ don't want to pay to fill both tanks at a time alternate from tank to tank each time you fill up. If you leave one tank unused most of the time you are going to cause problems.

[QTUNNA]

Sweet, cheers mate, just the info I was after, much appreciated.

[kjc292]

wish i still had dual fuel tanks. P.O. installed an after market tank on the drivers side with a switch to run duel tanks but the fuel line from the original tank is missing to the module inbetween tanks. thinking im going to have to drop the tank and clean it.

[QTUNNA]

So that's my fuel tank question answered thank-you, I done a roadtrip on the weekend and one tank emptied so I manually switched to the other tank, all sweet ��. Next question, do C10s have a high beam function for the headlights, if so where is the switch / button located to select high or low beam. The reason I ask is that when the headlights are on there are 2 blue lights that appear at the top of the speedo, out here in OZ that indicates lights being on high beam but I can't find a dimmer switch. Cheers.

[donut]

Yep, that's a high beam indicator here also. You should be able to click the turn signal stalk (just a click back toward you, with a finger. Not a cheater bar. lol) That should switch between high and low beam.

Older models had a floor dimmer, near the e-brake pedal.

[QTUNNA]

Cheers Donut, I'll check it out, that's the options we have out here to but I couldn't find a button under the carpet and the indicator stalk didn't appear to hold it's position when pushed or pulled, I'll have another look though, thanks mate.

[hatzie]

It's not a like a Subaru, Toyota, or VW where you pull it toward you and push it away and it stays in position.
The GM beam switch clicks when you pull it toward you. The stalk moves back to the rest position till you click it again.

[QTUNNA]

Originally Posted by hatzie

It's not a like a Subaru, Toyota, or VW where you pull it toward you and push it away and it stays in position.
The GM beam switch clicks when you pull it toward you. The stalk moves back to the rest position till you click it again.

Another question answered, you guy are good, lol. I just wasn't pulling the stalk far enough towards myself, as you mentioned, the high beam stalk on our cars out here holds it's position when activated, thanks once again, cheers.

[piecesparts]

Originally Posted by QTUNNA

Another question answered, you guy are good, lol. I just wasn't pulling the stalk far enough towards myself, as you mentioned, the high beam stalk on our cars out here holds it's position when activated, thanks once again, cheers.

In our country, it's them furin jobs that have the goofy stalks that stay in the place where you put them, but since you are in Australia, I guess everything, but a Holden may be furin to you. Our late model vehicles have so many import parts in them, htese days, we now are like you are with the switches and such.

[hatzie]

Originally Posted by piecesparts

In our country, it's them furin jobs that have the goofy stalks that stay in the place where you put them, but since you are in Australia, I guess everything, but a Holden may be furin to you. Our late model vehicles have so many import parts in them, these days, we now are like you are with the switches and such.

My 2009 Chevy Impala SS stays latched and so does my Dads' '00 Buick Century. So even the Gaijin have adopted the Nipponese way.

[piecesparts]

Originally Posted by hatzie

My 2009 Chevy Impala SS stays latched and so does my Dads' '00 Buick Century. So even the Gaijin have adopted the Nipponese way.

I just purchased a nese vehicle, this winter. It is an older Toyota 4 runner to use at work as a Bubba Beater. I have a lot of construction ongoing at my work place and the contractors are a special kind of "Don't Care about nuttin" group, so beater is my Furin driver. My wife's Pontiac G8, being a Furin Aussie car, has many of those push and stay parts on it, though.

[QTUNNA]

Hi guys, my C10 is now running very rough as it must have picked up some muck from the fuel tank, I can't seem to find a fuel filter though, what should I check to clear the problem. Usually I'd replace a fuel filter 1st. It started running bad when 1 tank emptied and I flicked over to the other tank. Problem occurs between abut 45 and 60mph

[hatzie]

GM fuel filters are sintered bronze or tiny paper elements that go in the fuel line fitting on the carburetor.
Be very careful to not crossthread the fine thread housing and don't loose the spring.

How to replace a fuel filter on a Rochester...

[willett]

What the heck does furin mean??

[QTUNNA]

Originally Posted by hatzie

GM fuel filters are sintered bronze or tiny paper elements that go in the fuel line fitting on the carburetor.
Be very careful to not crossthread the fine thread housing and don't loose the spring.

How to replace a fuel filter on a Rochester Quadrajet 4 barrel carburetor - YouTube

Awesome, thanks for your help

[Fixwhataintbroke]

Originally Posted by willett

What the heck does furin mean??

I was wondering the same thing but then figured it must be a fun/goofy way of saying foreign

[71 customcamper]

I have a few questions about my new squarebody. I just bought it in September and I replaced the carb and fuel pump and fuel take valve. It seems as though the fuel bleeds off after 5 min after I shut the truck off is there anyway I can fix that? Also I live in California and with all the emissions stuff do you have to leave the return line functional on the tanks? Because my fuel valve quit working again the day after I put it on and I'd like to convert to an electric fuel pump from Holley and eliminate the drivers side tank but I need to know if I should get the standard one or the one with the return line port. Thanks for the help in advance.

[hatzie]

Bleeding back is caused by a faulty fuel pump. There should be a check-valve in the fuel pump return fitting to keep this from happening. Why go to electric are you adding fuel injection? The mechanical fuel pump moves more fuel than your carb needs, through the return line, and is usually more reliable.

The dual tanks failing is usually not the expensive hard to replace tank valve. The cheap easy to replace rocker switch fails.

California will tell you that you have to keep the return line if the truck came with one. They don't like modifications. You may have to get an exemption for an electric fuel pump.

BTW Good netiquette is to start a new thread...

[71 customcamper]

I'm on my 4th mechanical fuel pump and they've all done that. That's why I'm leaning towards an electric pump