Engine knocking... what the dealer said!

Engine swap? that it is a job with a lot of revenue for the Stealership

 

it will start again. The knocking is coming from water in the cylinders. That is the moisture from the intake manifold and the EGR radiator. The colder the weather the more frequent this knocking will come back..

They are saying that the block was cracked ? Did the car had white smoke and was it "eating" the coolant ?

 

wow, how many miles on her? i doubt they could slip that past toyota if it weren't true. too bad you din't get to see it. will be interesting to see if you get the cold start knock, maybe that blew a hole in the piston? i don't know how a car could run smoothly with a bad piston.

 

I think that when your OEM warranty runs out you need to find an independent wrench to work on your car.

IIRC?
Joisey is a CARB state, FWIW.

Good Luck!

PS.....did they find a hole in the piston when they did the motorectomy???? I'm curious what the mother ship says about this......

 

I think obviously an entire "engine swap" should at least temporarily fix your problem. Assuming there is nothing wrong with this engine, you shouldn't have the same problem...right away...

My concern is "What caused a plugged EGR valve and a "Piston Hole" to manifest in only 34,000 miles on your original engine? Shouldn't really have that type of failure that quickly.

If there is some underlying cause that led your original engine to this premature failure, and that hasn't been discovered or addressed, you could be a mere 34,000 miles or less from a similar failure.

I suppose it is possible, you just had an engine with a problem or flaw entirely of it's own. BUT..I'd want this confirmed as much as it could possibly be confirmed.

Did the dealership offer any explanation or theory as to why a relatively new Prius engine would develop that type of catastrophic total replacement failure so quickly?

 

Question for the OP: Did the engine knock for only several seconds after a cold start, or was it knocking continuously as long as the engine was running?

Another question: If the knocking was continuous, did you experience the temporary cold start knocking first?

What I have in mind is that the exhaust valve may have stuck open, and then get hit by the piston, resulting in catastrophic damage.

 

You have until 36000 to get the extended, on the forum you'll find the person in northers Massachusetts that offers the extended at a reasonable price, I'd be very nervous without one with that ice.

 

they didn't give you a hole explanation? strange that a car with a hole in the piston could run fine, makes you wonder. but i don't know anything about engines, and i'm thinking a big hole, maybe it was a pinhole. i wonder how they diagnose it?

 

I's just be happy things were handled. This is not a common issue with the Prius version of the 1.8L.

 

have you started it and shut it down yet, to see what would happen the next day?

 

that's interesting, i didn't realize it doesn't happen from new. i wonder what changes?

 

i don't understand, if that was the case, it would be knocking and running on 3 cylinders all the time.

 

That, is a hilarious answer. (Well if you don't have to have your engine swapped).

I can't believe anyone working in an automotive repair venue would offer such a lame excuse. "Bad Gas" would cause a piston perforation? And total engine failure? .......That's SOME bad gas!

On the positive side, you've obviously documented your struggle. You have a new engine. I'd do my best to monitor it as you continue to drive. If the problem did indeed manifest directly from the old engine, your problem might be solved.

Good Luck.