3year old renault clio diesel has faulty piston, could this cause turbo failure.?

Question

i recently took my car to the renault dealer with a loud knocking noise coming from the engine, after a week of looking at the car they found no fault, the knocking noise was still there. My car was returned to me and some weeks later the knocking noise got louder and i lost power on the car...would not reach speeds of more than 20mph to begin with, did pick up after a while. Took it back to the dealer, they replaced my turbo as they said the turbo had gone, got the car back, still the same knocking noise, they then told me that it needed two new injectors, this was after paying out 90quid first time they found no fault, 2nd time paid out 520quid and now they wanted 400quid for injectors. After my car was taken from the garage and taken to another garage to have this inspected, this is when they have informed me that the piston is broken, could this have been the problem at the start and would this have prevented the turbo from having to be replaced....? 3yr old car, 42000 on clock.

Answer 1

Sorry, can't help dear. They tried selling those French pieces of garbage in the US for a few years and it quickly became clear what crap they were. I'm surprised anyone buys French cars....it just amazes me how poorly engineered things like engines are. I understand some poor bastard in some third world hellhole thinking his frog car is tops, but someone in a developed country should recognise them for what they are.

Answer 2

Your cracked piston was the problem the whole time.
It probably never needed a new turbo. That or when the piston broke it sent debris out of the engine into the turbo. Or the turbo could have went bad and sent debris into the engine. Either way it is odd that is was not all seen the first time you had it in a shop.

Answer 3

first of all its probably the turbo thats done the damage if for some reason part of the rotor on the intake side of the turbo has broken off or the nut that holds the rotor to the shaft has come off there is only one place for it to go in the cylinder on top of a piston resulting a lot of damage. the debris from this will aslo damaged the injectors

Answer 4

i own a repair shop,and all of this could have been prevented probably if they would have caught the problem a lot earlier,who ever did the work the first time should have caught this now your going to be out the cost of the turbo and a new piston plus labor,because they missed it the first time,if i were you id not go back to the other place for any repairs,they missed this problem,so it don't appear they know that much about cars,good luck i hope this help,s.

Answer 5

I'd hoped a competent garage would know what a broken piston sound like as it would be misfiring and/or throwing oil out of the exhaust. A broken piston would cause turbo and injector failure as pieces of metal would be throw at them.

Answer 6

I'd definately say that the hole/crack in your piston would have ruined the turbo, it would have destroyed the oil, and thrown a lot of debris in aswell, possibly causing your bypass to open on the oil filter. Turbo bearings are very sensitive little darlings unfortunately... It sounds like you need to get some meaty mates together and "pop back to the garage"...

Answer 7

the turbo recycles exhaust gasses under pressure so anything that passes out of the engine goes through the turbo get a diagnostic engineers report on engine and u/s parts and instigate c court action

Answer 8

you got screwed.. it was the pistion all the time.IF and i mean IF the turbo was bad the piston didnt cause it ...the reasion turbo go bad is lack of clean oil...[ overheating]]..i'd b mad if i were you..I wonder if the injectors. caused the burnt pistion