[kuroyuki]

Where is this located on the 2.3 engine f23a? What does it look like? Is it difficult to access?

I've been looking but can't find it. Help please>

 

[Ossy]

Coolant drain plug is at the center bottom of the radiator, it looks like a plastic wing nut. It would start to drain when you lossen it and drain faster as you open it more.

 

[bbylon5]

Coolant drain plug is at the center bottom of the radiator, it looks like a plastic wing nut. It would start to drain when you lossen it and drain faster as you open it more.

He was asking for "Coolant drain plug on engine block"

 

[Ossy]

Base on kuroyuki's concern about accessibility, I am guessing the engine still in the van, its easier to drain the coolant where it suppose to be drained.
If the engine is off the van already, the coolant pretty well already drain off and no need to find the "engine coolant drain plug".
May be kuroyuki can clarify when wake up in the morning.

 

[dpkelly]

I'm enclosing a diagram showing where it is located from the service manual. Although I'm not sure if it is looking from the bottom or from the top. Take a look near the oil filter area. It seems to be obscured by the axle. Good luck.

 

[Zwolfe]

It's looking from bottom to top as if you were laying down there looking up.

That should actually be pretty easy to access.

Odd thing is though, in that picture it looks like the bolt is on part of the left axle assembly. That can't be right.

 

[kuroyuki]

The engine is still in the car.

The picture supplied looks to me as if it is taken from underneath looking up.

I agree with the other comment that it lloks like that bolt is on the axel.

 

[kuroyuki]

Hello dpkelly

Thanks for your picture of the drain plug. What manual is that from? Would you be able to tell me the torques for engine oil drain plug, auto transfluid drain bolt, and thermostat housing bolts.

 

[overboostin]

bolt is located right above the drivers half shaft (axle) to the left of the oil filter when u remove it Dont use a 12 POINT SOCKET use a 6 point ,.\



also you will get wet

 

[dpkelly]

From this thread:

http://www.odyclub.com/forums/showthread.php?s=&threadid=39236&highlight=manual

I found the manual here:

http://www.megaupload.com/?d=7UM35NEQ

 

[kuroyuki]

Huge thanks for that...

That manual is exactly what I need...I competent with mechanics but I need a manual to guide me. Is this the factory Honda manual??

 

[kuroyuki]

I finally got around to TRYING to drain the coolant. I couldnt find the drain plug on the block. I undid a 12mm bolt above the left drive shaft only to find oil came out (what is this bolt for??).

I could just see another bolt above the oil filter (it seems to be a 17mm head). Is this the one? If it is access is really difficult.

 

[overboostin]

yes the second bolt is the one

the 12mm one you took out is where you install a holding pin for the balance shaft to lock it inplace when u do timing belt

 

[kuroyuki]

Would you know what the torque is for the 12mm bolt so I can do it up properly?

 

[Zwolfe]

Why are you trying to drain all of the coolant out of the block?

Just curious.

 

[kuroyuki]

The workshop manual says drain the raidiator (drain plug at bottom of radiator) and then drain the block...in order to remove as much old coolant as possible.

Are there alternative methods??

 

[Zwolfe]

Well, hm.

Think about this for a moment.

When you change your oil, you're not dropping the oil pan.

When you change your transmission fluid, you're not dropping the transmission and taking it apart neither.

There is still old fluid circulating around, even if you change them out 10 times. Very minor trace amounts, but still.

I would be the least worried about the coolant system personally. I would just use the drain plug on the radiator, and if I was really worried about it I'd refill the radiator and start her up and turn her off and drain from the radiator again.

I definitely commend you on following everything to a T, but you're borderline on a religious following. Either way you're better than I am.

 

[Zwolfe]

Excuse me I hit enter on the submit button like 3 times and had to delete 2 copies of the previous post, accident.

If you REALLY want to get the engine clean without using potentially corrosive / harmful chemicals, you can just use tap water.

You open the drain plug on the radiator, get a water hose and stick it in the top of the radiator, turn the Odyssey on and let the water from the hose cycle through the entire coolant system until it makes its way down and out of the radiator plug.

You might be suprised just how long you see dirty coolant / water come out of your coolant system.

You know the water is clean so when it isn't clear coming out it's taking grime and crud away with it.

On very dirty coolant systems I've had to cycle water through for up to 20 minutes until the water started to actually look like water that poured through the coolant system and out of the radiator drain plug.

Being in Japan I have no idea where you could be at and let the fluids just flow through though.

I guess you could collect the fluid but even after that what would or could you do with it. A place that accepts used motor oil probably won't be in a position to accept it. Just keep small animals away and let it drain into the grass I would say. Doesn't kill the grass but I suppose in massive quantities it could.

 

[Ossy]

I have to agree with Zwolfe, this following the manual thing is a little bit overkill. I am a DIY for 30 years and never completely drain off the coolant through the engine block drain plug. There are flush kit in the market to help flush the engine and make your job easier than... finding he drain plug. I installed one in my Accord and it work well with the garden hose. Forget about draining it clean, afterall you put coolant back and the minute you start your engine it gets dirty again!

:no: The 17mm bolt above the oil filer, if it has a harness attached, its the oil temperature sensor. It can't be any drain plug, just common sense any drain plug should be placed in the lowest point for gravity to do its work.

 

[dpkelly]

I'd have to disagree. The only way to get most of the coolant out is to drain the rad AND the engine block. The engine block holds a ton of coolant (even more than the rad).

Now if you were to leave the coolant drain plug on the block alone and just cycle water through, I'd bet you would end up with water sitting in the engine block even if you drain the rad. Some people would top off the rad with 50/50 solution. Now you've got a very diluted solution when the water in the block mixes with the 50/50 solution. Maybe you'll end up with 25/75 (very dangerous!).

The lower rad hose goes UP to the thermostat housing just above the engine block but about level with the cylinder head. So the engine block will still have alot of coolant even though only the rad is drained.