Hilux808

My toyota manual for my 91' 4Runner claims that there is a coolant drain cock on the engine (Page CO-5, step #3. According to the picture it looks like its on the drivers side but I can't find anything on my engine block that looks like a drain. In the picture it looks like a bolt. I can't imagine that this would be a misprint so do any of you know where the drain on the engine is? If it does exist how would you get to it? In between the frame rail and the block is the exhaust, very tight space.

874runnersr5

I wouldnt worry aboutit to much, i doubt there is that much in the system anyway. Hardly any came out when i did my timing chain/waterpump and stuff.

Hilux808

Do you know if this block drain exists? I've always just drained the radiator but I figured if I can get the most out the better.

abecedarian

I didn't find a drain on my 91 when I had to pull the engine. And I caught most of the coolant when I drained the radiator. Maybe lost a pint or two.... Anyhow, we've got far too many cats, dogs and small kids in the neighborhood anyways to worry about loosing a few.
Heck, I've come home to find someone else parked in my driveway, which ticked me off considerably until I saw a driver come out of another house, and no one come out of mine.

Hilux808

Thanks guys, at least I know it's not me now. I could have sworn I know what a drain cock looks like. I'll just continue to do the radiator from now on.

xzyragon

there's a drain on the bottom of the radiator, two plug / prongs that stick out that you have to unscrew

not sure about the block, but you could always pull of hoses

myyota

There is a drain plug on the side of the engine block on 22RE`s, i just can`t remember what side of the engine its on right now, i know its towards the back of the block and its not a drain cock, its a screw in plug that looks more like a bolt.

khany2002

On my '86 there is a drain cock waay down on the drivers side... it's about a 10 or 12 mm bolt in the side of the block; that drains the block out. It's probably hidden underneath the downpipe / exhaust manifold making it tough to see. If you crawl under or look at the right angle, it should be visible.

Hope this helps,
Yusuf

desconhecido

Right, it's on the driver's side toward the back. If you pull the plug, you may not get any liquid out until you go in the hole with a piece of stiff wire and clean out all the FIPG. Then you will get about 1/2 gallon.

Pic from sunwest:



pic from 22re.com

Brendan

Old thread, but I was looking for the drain plug on the engine block as well. I had noticed the bolt head but was unsure at the time if that the was the plug or not. Thanks for the pictures to confirm, desconhecido. It was a PITA to get at and a 17mm socket was needed as well as a wide catch pan.

Desipticon

soo. is draining the radiator sufficient if i only want to pull and clean my air intake?

Seth Thomason

I have recently had machine work done on my block and they removed that block drain plug and lost it. i was wondering if anybody knew what size and pitch that plug was.

millball

Should be 3/8 inch BSPT. A little different than American NPT.

The actual call is a Japanese Industrial Standard spec. (JIS), but BSPT (British Standard Pipe Taper) is functionally identical, and much easier to lay hands on.

Yoda9916

hey so the block drain is a bolt its under the exhaust manifold about half way up the block by the firewall

Paul22RE

Yes. All you need is a ratchet, extension & a 6pt 14mm socket. A swivel head makes it easier to access, but not a necessity.

2ToyGuy

I always just pull the lower radiator hose to get all the last little dribbles out. Even when I used the drain on the block, which took me a while to find, when I pulled the bottom radiator hose I got a facefull of coolant. Glad I had my mouth closed and safety glasses on! Ever since then, I leave the block drain alone, and use the radiator drain, and then the bottom hose, to get all the coolant I can out. Surprising amount left after the radiator drain runs out.

It does seem to drain out as much coolant as will drain out that way. I've pulled the head, the intake, the water pump, etc etc, and never gotten any more than a few drops out of anything. Even out of all those little hoses feeding the intake and throttle body, which LOOK like they would hold some trapped.

Just my 2 cents worth...
Pat☺

anndel

Did the same, pull the lower radiator hose and let it drain. Helped when I parked on our sloped driveway facing downslope. Besides, when I did the timing chain/waterpump/oil pump routine, not much antifreeze came out.