I don't understand the choke system on my stock F2.

1. My choke is always wide open even cold and I don't see what is supposed to close it except the choke cable, why then have a temp controlled choke opener? Someone told me his choke is closed coldbut mine is open. My Haynes manual shows choke closed cold and the vacuum bsvd opens it when hot, makes sense but where does the choke cable fit in? Does the vacuum choke opener overide the choke cable if you don't push it in as soon as you should? Or is the choke cable to override the temp controlled opener?

My choke is wide open cold. Is this normal? The Haynes manual says closed cold. What closes it? The only thing I can figure is the choke cable. I can't tell cause my knee broke it when it was pulled out and I was getting out. Is it possible the choke cable can hold it closed cold as well as hot and the choke opener than opens it hot? Really I don't know what is supposed to close the choke besides the cable unless I am missing an external spring but the exploded carb diagram does not show one.

2. HAYNES manual shows the vacuum line going to the choke opener has a tee in the metal part with one end going up to those three ports on the air filter, this makes a constant vacuum leak and there is not enough vacuum on that line to pull the choke opener diaphram. This can't be right, there would never be enough vacuum coming from the air filter can to open the choke. As soon as I plug the vacuum line going to the air filter the choke opener linkage snaps back. Of course in my case my choke is already open. I plugged the line going to the air filter and it runs better without that vacuum leak

Is my Haynes manual correct? It has the choke opener line going to the bsvd which is getting it's vacuum from the little three hose vacuum port in the intake manifold. The is also a blue check valve after the bvsd. This would make sense if the steel part of the line did not tee up to the air filter port thus losing all it's vacuum pull.

I need to find a factory vacuum schematic. Is there something better than the Haynes manual? The sticker on the body just shows the bsvd going to vacuum without that tee in the steel tubing. Could that tube with the tee supossed to be running a digfferent line.

Thanks
Hudson

Fj60's have manually operated chokes, controlled with a pull knob to the left of the steering wheel on the dash. Sounds to me that you're talking about the bypass on the air cleaner housing, yeah? Supposed to aid in cold starting by drawing warmer air off the exteriot of the exhaust manifold, and then open as engine temperature increases and draw in cool outside air... Is what you're asking about the gold anno cylinder on the left of the image here...?

http://www.cruisersrock.com/parts/images/fj60airclnrassy.JPG

I may be wrong. Anybody else care to chime in...?

it is an overcomplicated system for what it does.

if you can(location/money)look into puting a weber, header, and HEI distributer on the truck and it will run like something other than a 2F.

and the electric choke on the weber works very very well(when adjusted properly)

take some pics of what you got, and then you could get some good advice.

i work on these trucks for a living, so i have seen alot of them. most of the time the PO has screwed them all up.

it is an overcomplicated system for what it does.

if you can(location/money)look into puting a weber, header, and HEI distributer on the truck and it will run like something other than a 2F.

and the electric choke on the weber works very very well(when adjusted properly)

So does the stock stuff, and does better on hills..

Great, a forum with replies! I tried Toyota Nation but nobody talked back.

First I am all stock and everything looks just like in the Haynes manual. I can't spend $ on retrofits now much as it'd be fun.

If anyone has a Haynes manual 92056 (1980-1996) I can reference page numbers.

I've had this FJ 60 for some years and have done quite a bit of work on it incl. a ring and valve job. I never paid attention to the choke system till my knee busted it off inside the cab. It still works but I had to unmount it from the dash. I haven't coughed up the 85 dollars for a new one from the dealer yet.

Haynes manual 92056 page 6-8 fig.6.1 shows it just as mine is. As far as the choke opener diaphram line if you see the three little stub ports on the filter housing in the picture you guys put up the middle one is where the Haynes manual showes the tee off vacuum line causing me to lose enough vacuum to operate the choke opener. The choke opener is the bigger lower diaphram, the choke breaker is smaller diaphram above it. That works normally but again as my choke is already open it does not have to do any work.

Regarding item one perhaps I should first ask if your chokes are normally closed when cold.

Haynes manual 92056 page 6-9 fig.6.2 The Haynes manual shows nice diagrams of the choke system both hot and cold and clearly point out that the choke is closed cold. Mine is open cold, I need to figure out if this is abnormal. If it is normally closed what closes it?

Haynes manuals suck..

pull the choke knob and step on the gas once.

Willius what you were pointing out is the Hot Air Intake System. Your pic does show the three little ports the choke opener tee into. I guess I could scan the diagrams out of the Haynes manual to show coearly what I'm talking about.

http://cid-d223cbd79047bf5e.skydrive.live.com/self.aspx/FJ60/choke%20opener%20circuit.jpg

http://cid-d223cbd79047bf5e.skydrive.live.com/self.aspx/FJ60/choke%20hot%20and%20cold.jpg

In all three images I circled in red where they are branching off the choke opener vacuum line to the air filter housing. This does not make sense to me, it is just applying vacuum to the air filter housing instead of operating the choke opener.

Any ideas on the design or is Haynes wrong?

If any one is interested I've made progress here:

http://forum.ih8mud.com/60-series-wagons/289607-stock-f2-choke-system-confusion.html#post4528762