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1984 F150 i6
My coolant overflow tank does not have any fill lines on it. Any idea where the lines should be?
Where is the radiator drain plug, so I can drain and flush the system?
My tank has the hose from the radiator going into the top of the overflow tank. The hose does not reach to the bottom of the tank, it goes about 2/3rds of the way to the bottom. Shouldn't it touch the bottom of the tank?
1984 F150 i6
My coolant overflow tank does not have any fill lines on it. Any idea where the lines should be?
On the earlier tanks, there is no fill hole...you have to fill it through the same hole the hose runs through. However, I see that the cover has already been removed, so...
Originally Posted by xenophone
Where is the radiator drain plug, so I can drain and flush the system?
There should be a little spigot at the bottom of the radiator, probably in the lower RH corner (passenger side). If there are no spigots anywhere along the bottom, then you'll have to pull the lower rad hose off to drain it. It usually makes a mess, so have a big catch pan ready.
Originally Posted by xenophone
My tank has the hose from the radiator going into the top of the overflow tank. The hose does not reach to the bottom of the tank, it goes about 2/3rds of the way to the bottom. Shouldn't it touch the bottom of the tank?
Yes it should reach the bottom. That is not the original hose. There was a little plastic tee on the original line right where the hose enters the tank.
A nice upgrade, if you can find one, is a coolant/washer fluid tank from a 1986 model (possibly later 1985 as well). It is the same tank, but has a bottom connection for the hose, and a removeable plug/cap for filling.
If the hose goes to the bottom then it would be a recovery system.
Our trucks did not have recovery systems and why it dose not reach the bottom.
We have a over flow catch can system.
Dave ----
Here is a picture under the hood of a 1986 truck, and you can see that the coolant tank hose connects at the bottom, and there is a handy dandy fill cap on the top. Otherwise the tank is the same, so it swaps right in place of the 1980-1985 tanks with the hose going in the top. Have to find them in the junkyard unfortunately, nobody is remaking these currently.
If the hose goes to the bottom then it would be a recovery system.
Our trucks did not have recovery systems and why it dose not reach the bottom.
We have a over flow catch can system.
Dave ----
Hey Dave,
My hose goes to the bottom of the tank, and the system pushes fluid into the tank when hot, and sucks some back out when it cools down. I normally keep it around 1/4 full when cold, but it goes up to half full or so when hot.
Think mine also goes down close to the bottom from the top, don't want to suck up junk from the bottom, but never checked if the level moves with the temperature?
Dave. ----
My hose goes to the bottom of the tank, and the system pushes fluid into the tank when hot, and sucks some back out when it cools down. I normally keep it around 1/4 full when cold, but it goes up to half full or so when hot.
That's how I thought mine is supposed to work. I'm thinking I'll just put a new hose in that goes to the bottom of the tank.
Does your hose come off the radiator right at the cap?
That's how I thought mine is supposed to work. I'm thinking I'll just put a new hose in that goes to the bottom of the tank.
Does your hose come off the radiator right at the cap?
Just below the cap, yes. Like Dave said you may want to keep it from touching the bottom 100% if there's any dirt in there, but otherwise it should be OK.
Sure is a nice looking under hood picture.
Are those the original stickers around the hood latching support rail?
Or did you find a source for new ones?
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