2GM20F-YEU Coolant drain points... 2 or 3? HELLLLPPP ???

[KevO]

Sorry for yet another question on this subject but... Having searched every darned manual, photo, parts list etc I can find I still can't find a definitive answer and I'm getting confused.

At the rear of the engine on the starboard side above the exhaust elbow (on the heat exchanger?) is what I am fairly confident is one of the coolant drain plugs. See here...

Now... I thought there was another in the vicinity of the dipstick but there appear to be 2, one above and slightly to the side of the other. They look exactly like the one on the heat exchanger. All of the 3 have nipples but no pipe to confirm for me what they are. See here...

So are they all coolant drains? And should they be done in any particular order when flushing etc?

Like I said, some manuals only mention 2, one manual says one is on the port side of the engine etc etc... Confusing!

 

[Cap'n Creosote]

On my 2GM20F there are 3 drains, just like yours.

The lower one in the second picture drains fresh water from the cylinder block. The one just above it drains fresh water from the heat exchanger. The one at the back of the heat exchanger in the top picture, drains salt water from the heat exchanger.

Or at least I'm pretty sure that's what they do.

This picture of my engine may show them more clearly.

 

[Georgio]

Wish my engine was that clean

 

[KevO]

On my 2GM20F there are 3 drains, just like yours.

The lower one in the second picture drains fresh water from the cylinder block. The one just above it drains fresh water from the heat exchanger. The one at the back of the heat exchanger in the top picture, drains salt water from the heat exchanger.

Or at least I'm pretty sure that's what they do.

This picture of my engine may show them more clearly.

Thanks for the help, all located correctly, system flushed thoroughly and all topped up. Job done!

My engine is also that clean but dear Lord what wouldn't I give for all that clear space around it? I can just get a single arm up each side with no sleeves on!!!

 

[Cap'n Creosote]

My engine is also that clean but dear Lord what wouldn't I give for all that clear space around it? I can just get a single arm up each side with no sleeves on!!!

<Gloat mode> The other side panel slides out too. </Gloat mode>

Unfortunately access to the stern gland is a different matter.

 

[KevO]

<Gloat mode> The other side panel slides out too. </Gloat mode>

Unfortunately access to the stern gland is a different matter.

Ah... The Lord giveth with one hand and snatcheth away with the other