can a turbo be bad?

[Vangpride]

Update: took turbo apart... The flap to the wga seems fine. No scratches and closes open easily... The turbine spins freely... Can't really see any shaft play.. It does however move a tiny up and down.. But one of the techs said that's normal ? No forward or back play. I don't see any cracked pipes (intake / IC) together. The steedspeed manifold looks fine no cracks. What else can be wrong..? I'm thinking of turbo bearings? Okay this is what I'm trying to solve.. When I hit at 3 k rpm the car makes a wga flutter type of sound..sounds like air and possibly the turbo. I have no clue. It sounds crazy..i don't know what's causing it.. Need more insight please! Would highly appreciate!! Thanks.

 

[CHIQLES]

there can always be the possibility the housing is cracked, hardware is loose, wastegate is stuck. In any case the only way to know is to remove and examine the turbo carefully. Why are you thinking its broken? Have you checked everything else before you came to this conclusion. Bypass/bov, vac leaks, clamps are tight. what are your gauge readings?

 

[Vangpride]

there can always be the possibility the housing is cracked, hardware is loose, wastegate is stuck. In any case the only way to know is to remove and examine the turbo carefully. Why are you thinking its broken? Have you checked everything else before you came to this conclusion. Bypass/bov, vac leaks, clamps are tight. what are your gauge readings?

Yeah i've checked everything. PSI goes to 0 and stops there. Going to look at the turbo more in depth this weekend. Take everything out and look at it, i think its the wga since it makes a flutter, but thats just me. My tech thinks its WGA possibly too but we could both be wrong. Just wondering if anyone had the same symptons as me. Also another use gave me a link about how the turbo flange was stuck open i believe.

 

[rally2003]

This is what I'm going through right now. Easy way to tell is take it apart look for shaft play and poor oil into the inlet or outlet. It should be sealed and not pass through the turbine.

 

[CHIQLES]

Id bet money if I had any that flap is staying open. The only reason you would stay at zero would be energy is being released then stored by the flap. For a crack in your mani to do this it would be a pretty big crack or hole. When you look in the housing where the flap is check for scrapes and also see if the flap has alot of play. Good luck take pics of what you see and find.

 

[Mysta316]

My turbo did this and it did not have much up and down play but the blades hit the housing and wore them down enough to make it to it would not create boost.

 

[tweety2300]

If you have a bov check that, local guy was having the same thing happen, one of the springs in the bov broke it could handle staying closed at idle but once it built up 1-3 psi it would come open

 

[Matrix]

Yeah, that would have to be one heck of a crack to cause no boost buildup whatsoever. The MSP turbo has a problem that arises close tot he 100k mark. The sleeve holding the wastegate flap slowly moves outward, eventually causing the flap to rub against the turbine housing. If the sleeve comes out far enough, the flap will catch and stay completely open. There was a thread put up detailing the solution and even had pics. I'll see if I can find it for you. I'd wager your problem is either this or your bov/bpv staying open.

 

[CHIQLES]

http://www.mazdas247.com/forum/showthread.php?123759269-no-boost-found-problem&highlight=

 

[Vangpride]

The BPV was new which was stated by the P.O but since he didnt tell me much more..I dont really believe him since he didnt exactly tell me everything that was wrong with the car. Had a Maifold leak when i bought it and he said this was why it wasnt building boost. Fixed it and no boost. He then no longer keeps in contact with me(I obv said to myself F*$k him. Got this car off this site too..) Other than that yes im looking going towards the flange and the WGA thinking one or the other is bad. I'm hoping the turbo isn't bad yet since the car was at 75,xxx when i purchased it.

Id bet money if I had any that flap is staying open. The only reason you would stay at zero would be energy is being released then stored by the flap. For a crack in your mani to do this it would be a pretty big crack or hole. When you look in the housing where the flap is check for scrapes and also see if the flap has alot of play. Good luck take pics of what you see and find.

The flap is what usually holds the boost right? Not the turbine fan right? Sorry New to Boost.

This is what I'm going through right now. Easy way to tell is take it apart look for shaft play and poor oil into the inlet or outlet. It should be sealed and not pass through the turbine.

So if i open the turbo up..there shouldnt be in oil in the turbo..?

 

[Vangpride]

http://www.mazdas247.com/forum/showthread.php?123759269-no-boost-found-problem&highlight=

This is getting Book'd marked.

 

[Vangpride]

Update...the flap I fine...I really don't know what's wrong now...needing some help..

 

[Vangpride]

Updated!!!!

 

[CHIQLES]

okay if you are certain the flap is good and there is plenty of tension on the wastegate to keep it closed then either you have a faulty BPV or a super loose coupler somewhere. Take a pic of your setup when you got it back together.

 

[Vangpride]

okay if you are certain the flap is good and there is plenty of tension on the wastegate to keep it closed then either you have a faulty BPV or a super loose coupler somewhere. Take a pic of your setup when you got it back together.

Forgot to mention...the gasket between the manifold and turbo was completely messed up. Half of it was missing like it broke off. Maybe air was getting thru that? Having 9 out of 10 bolts on my exhaust manifold would air leak?

Update: while examining the flap and the turbine..I notice the hole the flap was covering had cracks!! There was at least 3. They aren't very big at all and almost invisible if you don't closely look at it..I'm assuming my turbo is cracked. Air coming thru that too...