95yoda

So I noticed just 2 drops of coolant hanging from the underside of the truck. Fresh green so I knew it was new.

upon investigation it is coming from the small diameter red hose that routes over the oil filter. What is that coolant hose for? Heat?
I see it going back to rear of engine but not sure where.

95yoda

I know the previous owner flushed the heater core so if that line is for that, in wondering if it's just not pushed on that steel pipe far enough or not tight enough . It's coming right from the end of the red hose.

jakey poo

Looks pretty tight in there, I'd first try loosening the worm clamp and see if you can push the hose on any further, might be an easy solution. The coolant could be running down the hose from up top and that's just where the drip is collecting. If pushing it on doesn't work, I'd replace the hose.

rickc5

I like Poo's suggestion. Perhaps the clamp just needs tightening (?), but pushing the hose on a bit further can't hurt. You can also add a second (new) clamp--hey, that can't hurt either.

There are many more water/coolant hoses on my engine than I've ever seen before. I chose to NOT deal with any of those when I installed the new Weber. I also didn't mess with all the main fuel lines, other than the one from the fuel pump to the carb.

Anyone know where the fuel filter is on a 1983?

Co_94_PU

iTrader: (-1)

These are what Toyota calls "water by-pass #". I don't recall off hand where it goes.

A typical failure for coolant lines is an internal crack that exposes the reinforcement mesh strands to the coolant, the coolant will then wick its way to the end of the hose where you'll find the threads are wet. You need to replace the hose when this happens before it ruptures completely.

If you want to try reseating it on the hose barb, you should clean the crust and oil build up off first. You will need to do this if you replace the hose also so it has a good clean seat.

The second photo shows this isn't the lowest spot on that hose so it's not likely running down from the other end..

Old83@pincher

It goes to the bottom of the intake manifold and routes coolant to warm the manifold when cold. When the thermostat opens it closes this. Some guys just block off both ends.

Co_94_PU

iTrader: (-1)

I don't believe that valve, iacv, blocks off the coolant just regulates the cold idle air...

Otherwise..

95yoda

I am going to check tge easiest first, seeing how far on it is and how tight the clamp is. On vacation now, so after.

so is it not even needed? Ppl block off both ends?

Co_94_PU

iTrader: (-1)

Safe to assume someone put it there for a good reason, and the engineering team that does parts reductionn also left it there for good reason...

Here are the 22r and 22re flow diagrams, they show it as a return line to the pump..

95yoda

Yeah it didn't make sense blocking off when I heard that. I will check it out when I'm home

NYHumpinUtah

iTrader: (1)

Old83 has it right, it goes to the bottom of the intake manifold. This hose comes from the back of the timing chain cover and feeds it. I don't believe you can reach it with the manifold on the truck. Hope you can just tighten the clamp and that fixes it, otherwise it's a Pia to do

Co_94_PU

iTrader: (-1)

Can get at all that stuff under the lower intake through the "starter" access panel in the right hand wheel well. Still not easy or fun but better than trying from the front and top.

83

Well this stuff can be a pandoras box but...Not that big of a deal to take the intake manifold off. Assuming you don't break bolts which with the corrosion you have is a possibility...

But hey, new intake manifold gasket, clean out some parts/passages etc...not a bad idea.

83

On mine is was on the passenger side, right around the back of the door, along the frame rail.