Coolant leak

[moliva1568]

I have a coolant leak and have been trying to track it down. I don't see it at the water pump, from the radiator, or around the reservoir. I was able to get some video and a few pics of where it seems to be coming from. All leaking coolant is appearing on the L hand side under hood. Please take a look and hopefully give me an idea if i've found the likely source or a result of the real culprit. The heat works but the other night it wasn't getting hot. I noticed the coolant was low and added some. Now it's low again and heat isn't there.
It's a 1991 G20 with 350 and AC.

Video from inside van (click on it to view)


Pic from inside


Pics from under hood




Thanks

[moliva1568]

Figured out it's the heater control valve. Purchased a new one but can't get the old one out. Any tips? should i cut the hoses or try to save them?

Thanks

[MagicRat]

Those hoses don't look too bad. Usually the hoses get the most wear right where the clamp goes. If there is extra length, you can trim-off the last half-inch so the new valve an the hose clamp sit on fresh rubber instead of the squished-down rubber from the old valve.

But if in doubt, use a new hose. Typically some universal straight hose will do. It's cheap to buy. You can always buy some extra length with a couple of extra clamps just in case you need to do an emergency repair when you are travelling.

[moliva1568]

Originally Posted by MagicRat

Those hoses don't look too bad. Usually the hoses get the most wear right where the clamp goes. If there is extra length, you can trim-off the last half-inch so the new valve an the hose clamp sit on fresh rubber instead of the squished-down rubber from the old valve.

But if in doubt, use a new hose. Typically some universal straight hose will do. It's cheap to buy. You can always buy some extra length with a couple of extra clamps just in case you need to do an emergency repair when you are travelling.

They are a pain to try and get off. I was afraid to cut them, in particular the one going towards the radiator because of the curve and finding a replacement. But it's so tight in there i have way to wiggle them around at all. i may just have to cut it.

(disregard my question on the other thread, you've addressed it here. Sorry)

[moliva1568]

Finally got it out and it only cost 2 hoses. I don't see any visible damage compared to the new one. Is it safe to say whatever failed might have been internal?

[moliva1568]

Can someone tell me what is the correct heater hose size? 3/4 or 5/8

[aleekat]

Just take your new valve with you to the auto parts store. Then just get a hose that fits snugly.

[moliva1568]

Originally Posted by aleekat

Just take your new valve with you to the auto parts store. Then just get a hose that fits snugly.

is it safe to say it would also be snug enough for the heater core pipes?

Thanks

Edit: disregard this question. Looking at valve itself shows the different diameters