turbo question

[jim jordan]

recently changed the turbo on my volvo xc70 2.4 turbo petrol ,hard job i can tell you lol,anyway after double checking everything was tight new gaskets everyware i now have a turbo howl ,really loud been checking everything but got me stumped any idea's

[MMT5]

Did you fit a secondhand or new turbo?

[jim jordan]

second hand one next to nothing of any play looked and felt good as new

[jim jordan]

just to add no codes and car pulls strong enough,no power loss in fact much quicker now compared to old turbo

[jim jordan]

found a noise that is similar off youtube
https://www.youtube.com/watch?v=RWoMXI_V7xY
thinking it must be either a leak off vac pipes or intake pipe or worse case the oil feed is partly blocked and bearings in turbo are screeming,time to investigate when weather stops raining

[Clan]

Originally Posted by jim jordan

found a noise that is similar off youtube
https://www.youtube.com/watch?v=RWoMXI_V7xY
thinking it must be either a leak off vac pipes or intake pipe or worse case the oil feed is partly blocked and bearings in turbo are screeming,time to investigate when weather stops raining

The question must be asked , why did you change the turbo? 90% of failures are to do with the oil supply otherwise they last the life of the car ...

[jim jordan]

thats the thing ,the last owner must not of kept up servicing ,had to replace pcv was blocked ,new cam seals so i'm thinking oil feed is partly blocked starving turbo of oil thankfully only driven it about a mile twice with checking in between ,the old turbo had loads of play in an out plus side to side but was quiet and pulled only checked it out of curiosity glad i did

[jim jordan]

just thought where is other end of oil feed pipe ,guess goes to oil pump up by driveshaft intermediate bearing i guess looks fun if so to access