fuel canister

[trphinney]

On the "86 2wd Ranger, as the gas line leaves the gas tank, the 1st fixture it passes through on its way to the engine, is a canister that the return gas vent line also passes through. I realize that as long as the low psi pump inside the tank is keeping this canister full, the high psi pump (next up on the line), will always have a supply of fuel readily available, and then either pump can work without resistance from the other. At this point, I am assuming that I understand the principle of the canister. At any rate, it has two valves w/ springs and caps (plugs) that must work with various pressures. In my case, one can see that the springs are turned sideways in thier cartriges, and the plugs are just kind of floating around in the cartriges. I noticed the prob. when I was looking for a reason that my rig was stumbling or dying, mainly just feather footing around town, or when sitting at a stop. When I pulled my gas tank (my rig only has 1), and found that my inner pump was shot, I thought I would also ck. out the cannister, and do what maint. I could on it. One source said to use it as it is, and see what happens. Another said to remove the valves, and skip the thought of them possibly adding to more problems later. The last source said to by-pass the canister all together, just joining the fuel lines together. Direction ?

 

[feellnfroggy]

Go to JY and get a usable canister. It allows a 'pool' of fuel to be readily avail for WOT when the slow pump can tkeep up with the fast pump. I would assume anyways. If your stumbling start checking sensors. Clean everything in your intake, do the seafoam mod, air filter wires etc. Check the MAF, O2, and other 'air checking' components.

 

[adsm08]

Go to JY and get a usable canister. It allows a 'pool' of fuel to be readily avail for WOT when the slow pump can tkeep up with the fast pump. I would assume anyways. If your stumbling start checking sensors. Clean everything in your intake, do the seafoam mod, air filter wires etc. Check the MAF, O2, and other 'air checking' components.

+1 on the pool of fuel, and the seafoam/wires/etc

But...

It's an 86, no MAF. Get a new IAT sensor, those gum up bad because they are right in the intake stream. They are about $10, and I've only had limited success cleaning them. Also, be careful putting the new one it. I had one snap off on me once. NOT FUN!!!

A new canister is not expensive, about $50 for the whole thing, and there is a filter in there, so personally I'd just go buy a new one. It is a dealer item, but it only has to be replaced every 10 or 20 years, so $50 ain't bad.

 

[AllanD]

That cannister also reduces the ammount of fuel that passes through the fuel rail (where it gets heated up) and returned to the tank (heating that fuel)

Because the return fuel (that other line isn't a "Vent", disconnect it with the engine running and see....) goes to the cannister and only when the cannister is full does any fuel return to the tank.

AD

 

[Funnyman141]

Huh? I took mine to the ford dealership here and they couldn't find out what it was I also asked on here about it. We figured that it was to keep some pressure off of the low PSI pump or to get rid of the air bubbles in the lines if you ran it low so we drilled through the middle to the return line mine didn't have any valves or springs in it.

I wonder what that will do to it in the long run?

 

[adsm08]

I dunno, but I'd be looking for a new one.