Coolant disappearing and can't find where

engine bay

 

I'm starting to look into replacing the engine now.

I found JDM engine depot, they say all of their engines will have 45-65k miles. Seems like there's a chance I could get one that has the same issue, one that has a OEM gasket which is apparently inferior to Feld Pro

Hybrid pit doesn't offer a rebuild for gen 4, only gen 3, or does this not matter bc it's the same engine?

Where should I go?

 

Thanks for setting me straight on that. I wasn't totally assuming they were the same, that's partly why I asked the question. I was just going off the basic specs - both have a 2ZR-FXE, to me that sounds like a model/part number. In my mind, since they are different, they should've changed that for the gen 4 but I'm sure there's a reason they didn't.

But that's all beside the point, what's a good source for an engine is. HG design for the gen 4 may no longer be an issue but, it seems to me, a failing eghe which then causes engine damage could very well be, especially with a mystery engine from a JDM supplier. Thanks

 

Put in new plugs a bit ago, Autolite Iridium XP. Sitting it purred but when I took it for a drive it ran rough again.

There was also a weird smell, kind of a burnt smell but not electrical, more like plastic.

This time got cylinder 2 misfire. I'm kinda wondering about the coils now, I'm thinking I'll get a spark tester rather than swap coils and plugs around.

 

I wondered about that.
I have spent the last 30 minutes searching the web for a guide (youtube, priuschat, physical repair manual) that will tell me step by step engine removal/install and I have found nothing.

 

Thanks
Yes, planning to do a borescope inspection

 

So far just the block test, I've got a borescope on order it'll be here next week

 

Okay, if anyone is actually following this here's an update...

Attached are some borescope pics. Cylinder 1 had a few drops of water, cylinders 2,3, and 4 had way more. All the piston tops looked about the same, maybe there is some degree of steam cleaning, I'm not sure exactly what they should normally look like.

Upon removing the oil cap it was obviously milky inside, I should've taken a pic of the valve assembly it was very sludgy.

I'm a repair/reuse kinda guy so I've decided to try to replace the gasket rather than replace the whole motor, of course I may end up doing that anyway. I took the cylinder head to a machinist, he will get back to me next week.

I'm really happy with the borescope, $24 here's a link

 

And what would that tell me?