New 2010 owner with a fixer-upper

You'll need to clean out the EGR circuit (egr cooler) and intake manifold. There will be a lot of carbon buildup. Replace the HG and hopefully you'll have a good running car.

 

Yes the car is just broke in The engine pretty much very well broken If mechanics are already seeing seepage into any of the cylinders then the setup is there to create vapor lock and to bend a rod and cause havoc You just want to be aware of that when you pull the cylinder head off somebody that knows what they're looking at will be able to tell pretty quickly by putting the Pistons in the middle to the top and the Pistons on the ends of the block again at the top and have a look you'll clearly see what's not right whether anybody does anything about it is another story. It's open deck design allows things to flex more It's just about as simple as the hat.

 

I recommend that you also replace the engine coolant water pump and thermostat. Use OEM.

Posted via the PriusChat mobile app.

 

At least bust open the water pump it just takes a second literally and look at the impeller somebody else here has been able to buy the impeller on Amazon for like $30 and if you're impeller has flaking cracking plastic around it just chuck it get a new one pop it in there and I bet your pump works is specified which you can test plugged in but not bolted up sitting in the car with tech plugged up.

 

Lets hope you are advanced diy with 262k on the odo

Rookie mistake for sure

There will be many more lessons learned from a high mile gen3.

I would not drive it again until the engine is fixed or replaced. Among other issues, gen3 have bad pistons and rings leading to excessive oil consumption. Consider a professionally rebuilt low mile engine.

 

Was trying to remember what that reminded me of, oh yeah: "slightly pregnant"?

Anyway, check the links in my signature (on a phone turn it landscape). Deal with the head gasket first, and follow up promptly with a thorough clean of the EGR and intake manifold cleaning.

Also, a 2010 with those miles is almost guaranteed to have an oil "drinking problem": Toyota, in search of mpg brownie points, used low-friction piston rings that have proven incapable of doing their job much past 100K. Not sure where/when/how you'd deal with that. In conjunction with the head gasket seems practical. One route: remove engine (in the course of head gasket replacement), have a machine shop go over the head, and swap in a brand new "short block" (it will have revised pistons/rings, per attached). Get the Toyota gasket kit (contains all internal gaskets/seals, part no in attached), and play it safe new head bolts (part no in attached).

 

Mama's 2010 that's been in the wind for most of its life just started its first hiccup rattle two days ago. Been expected for some time now

 

We need a public service announcement warning delivery drivers and other high mile used car buyers about gen3.

Especially since it is so easy to hide a hg problem long enough to flip these cars with an as-is bill of sale.



Plus brake boosters and oil consumption.

 

Yup, pour a bottle of stop-leak into the engine coolant, make sure the the oil's topped up, pressure wash the engine bay, and when prospective buyer comes for test-drive, have the car "warmed up for them".

Toyota's not much help. With all of the Warranty Enhancement Program edicts we've got, they rubber-stamp this phrase:

While the majority of vehicles will not experience this condition

^ Just like that, italicized and underlined for emphasis.

 

If you're going to work on this car you will learn a lot. A few "essentials"
Get techstream
Get a 12v charger
Build a "grid charger"
Get a good digital multimeter
Get another car to use while you work on this one.

 

congrats and welcome!

all the best with your project car, sounds like fun.

 

You can probably get some repairs accomplished without Techstream (or a comparable scan tool) if it's really important to you to prove you can do it. But you'll be doing it all backwards and in heels.

 

It depends on what you are doing. Most repairs you don't need techstream.
Like for the head gasket. And if you caught it in time, seems you did, then you'll be fine.
Just make sure you get the WHOLE head gasket kit.

Once you start unpluging things, do not turn the car on! Probably best to disconnect the 12v battery.

 

Yes, and they all have the revised pistons and rings, reputedly less prone to oil consumption.

 

You don’t have a typical Toyota and the generation3 you have is arguably the worst Prius made especially at higher miles. You can’t even do a thorough brake bleed without Techstream or a much more expensive scanner. Almost all hybrid data except for the battery is largely hidden from the cheap auto supply scanners. BMW has nothing on a Prius when it comes to complexity and most mechanics shun them.