Turbo headache...

**Gery83** · 06-09-11, 19:16

Hi!

Hope some of you guys can give me some advice where to look for problems, this really gives me a headache since a few days now...

The situation is, that my car was reassembled again a few days ago. Everything worked fine, the smaller TD014-13G turbo was really fast, it spinned like hell even on 2000rpm. You could hear the turbine noise, almost louder than the engine. After a test drive, we saw that the boost didn't go over 0,6 bars. I discovered that I've connected the pierburg valve wrong, so I fixed that.
After this I didn't drove the car that hard, only daily use. So I can not tell you what the max boost was after the valve was connected properly.

Next day, I wanted to show my friends what's a real car...

But there was no boost at all. After some pipe tests I could get around 0.3 bars, but only on real high revs on WOT. And also the 'high rev spinning turbine noise' is disappeared totally, so I think it spins, but on much lower rpm than it should.

I removed the core of the turbo today because we had some theories, like the turbine wheel was melted, or the internal wastegate didn't close properly....etc...
So It's out of the car now, and there is nothing wrong with it. It has no play, no oil leak, spins well and freely.

Tomorrows work is to remove the hot side's housing with the wastegate, and check it for cracks, broken parts, etc...

Does anyone had this kind of experience, or has some advice on what to look for, when turbo spins way too slow?

Thanks!

**mpampis_** · 07-09-11, 10:36

Did you make any changes to the chip of the ECU?

**Gery83** · 07-09-11, 14:27

Originally Posted by mpampis_

Did you make any changes to the chip of the ECU?

No, not at all. Running on factory ECU with factory EPROM.

**mpampis_** · 07-09-11, 14:41

The stock turbine of me was broken next to the port of the wastegate. I had boost but for a while. The most impossible is the wastegate it stuck

**Steve Webb** · 07-09-11, 18:48

Hi Gery,

Sounds like the wastegate has stuck open letting all the exhaust gas bypass the turbo except at high rpm. Or less likely, something has worked its way out of the engine and has destroyed the turbine impeller, but from what you has said, that doesn't seem likely.