Need help

I have a 2004 Volkswagen Golf tdi and about 2 weeks ago we think the turbo went out. My brother was driving it and was going up a hill and heard a loud noise and it lost all power. Once we got it home we checked it out and it doesn’t have any boost at all. It’s also letting out a lot of black smoke when you give it more throttle. But my dad said it should’ve thrown a code but it never did. Any help will be appreciated thank you.

Open the hood and check for a boost pipe popped off.

Search "dog collar" here. That would be my first guess.

Where should I check I’m sorry I don’t know a lot about TDIs and turbo chargers. I would like to learn though. Where should it popped off at from?

I don’t know if this will help but 2 months before it lost boost the turbo got louder. So could that mean there is a leak somewhere?

Open the hood.

Take a look.





Passenger side, towards the firewall, near the strut tower. Very common for that charge air hose's retention tab to wear down and allow it to pop off.

You can fix it with a kit.

https://kermatdi.com/i-123-pumpe-duse-intake-hose-manifold-connection-fix-bew-bhw-brm.html

I found it is loose but it’s not off could that be a reason why it’s not getting any boost?

And there is oil around the seal.

That's possibly your problem. If it is loose and cocked off to one side and spewing oil from the breather, it is for sure leaking boost.

You can have another boost leak down low, to and from the charge air cooler behind the LF corner of the bumper too.

oilhammer said:

That's possibly your problem. If it is loose and cocked off to one side and spewing oil from the breather, it is for sure leaking boost.
You can have another boost leak down low, to and from the charge air cooler behind the LF corner of the bumper too.

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Ok thanks I’ll check it out. But is it possible to lose all boost from that one spot?

And where else do I check at? I see the hose go to something then it goes down to the bottom left of the car. If I make sense when I say that.

All it takes is one spot to lose boost, yes.

The turbo is on the back side of the engine....coming out of that the charge air tract goes into the passenger front wheel well area, down to the charge air cooler, then back up and across above the belt area to the intake.

You'll have to get the front end of the car (safely) up a bit, possibly remove the belly pan, and then follow the paths of all of those big-looking hoses to see if any have popped loose.

That said, yes, one leak will do it... so you could try re-attaching the one you already know is loose and see if your symptoms go away. It should 'click' into place and resist being tugged apart.

Also worth noting that the connections tend to pop loose because they are worn; so whatever you re-install may pop loose again in the near future.

As oilhammer mentioned, "dog collar" is the search term to use to find out about an after-market clamp that can be used over the existing one. Cheaper than replacing the factory hose.

It seems like it’s only from that one spot. But it won’t hurt to replace the other spot. Could you send me links for replacing them.

Don't know of any threads on how to replace specific boost hoses.. you really just need to follow the hoses and investigate in person. A flashlight can help.

Ok thanks for the help it means a lot to me. I just want my car back it’s my life??

My dad said that it can’t be the lines because the turbo isn’t spooling up. What could that mean?

Gabealtland said:

My dad said that it can’t be the lines because the turbo isn’t spooling up. What could that mean?

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It means your dad should stay out of it. This is getting ridiculous. I could have that car diagnosed in 2 minutes. It's a charge air leak.

oilhammer said:

It means your dad should stay out of it. This is getting ridiculous. I could have that car diagnosed in 2 minutes. It's a charge air leak.

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What is a charge air leak?

Gabealtland said:

What is a charge air leak?

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Exactly what he's been telling you. The "boost" is leaking and not getting into the engine. Fix the hose connection.