misfiring due coolant leak into cylinder.....:(

This is becoming more common on high mileage Gen 3s. Check with Avi at Hybrid Fix in Los Angeles.

 

My sister currently is in the same situation as you. Same problem. She bought a low mileage engine for $1000 and my dad is going to install it for her. The "new" has 40k her car has 180k on the odometer

 

The water pump should be replaced every 80,000 miles. The 1 or 4 cylinder missing is common. The only real fix is a new or rebuilt engine. It's bad news but that's the way it is. Cutting corners will just result in the chech engine light coming back on.

 

I am a cab driver in NYC it happened to my 2013 at 99,000 and other cabbies priuses. Expensive but nothing you can do. Get the pump when you get the engine.

 

Again I can't stress enough the importance of doing it right the first time. Don't waste loot cutting corners. New plugs etc may work for a few days but it is 100% the check engine light will return. Get an engine and water pump. I feel for you and myself too.

 

But its just a head gasket.
Just replace the head gasket and i should run fine, thats a alot less work than another engine.
1 day work tops

 

follow avi's advice. he's a member here, and a crackerjack prius tech.

 

I can pull the motor faster than doing a head gasket. Timing chain cover is a pain with the motor in the car, re-applying the grey rtv on the timing cover with motor in is no fun. It can be done. There are also two parts to the head that have to come apart. The best result is using a motor stand.

 

She did the right thing. Change the water pump every 80,000. So another 40,000 for you.