[Solved] VW TDI: Oil Leakage from Intercooler, Hose Leaks, Power Drop & Black Smoke in Golf 3 & B5 TDI

If you have an oil leak from the intercooler or from the hoses, it is leaking - holes. The symptom may be a drop in power and black smoke from the exhaust. Often experts say that it is a turbine. I had it in Golf 3 and, of course, in the b5 b5 tdi.

and what did you do?

I removed the intercooler, cleaned it with gasoline, blowing it under pressure with an oil gun, inside and out. I blocked it with two fi 50 (rubber) plugs from the sewage system, in one of them I made a hole and checked by immersing in water where there is a leak. Of course with low compressor pressure. I glued it with aluminum glue. ARALDITE F 300 + HARDENER. And so I saved the intercooler and fixed the fault. I had little power, black smoke from the pipe and I was constantly adding oil that was sucking the intercooler. You also have to check the intercooler wires to be sure.

Interesting! We are learning all the time but I don't think I was in this lesson.

A buddy once bought at DE Yariske.
He checked the oil level on the spot, he added the minimum before the tour. It flew to PL. He did not check the oil anymore, as he was going to the inspection, the heads were smashed. IC full of oil in the bowl almost the minimum. so she must have had a drink for a while.
At another friend's, the men drill a hole in the IC and put the screw in. Every now and then, they unscrew and drain the condensate, but when the oil appears, it is the turbine's fault. Nobody is taking a fart from the turbo regiment, a polished 13 mesh eyelet, which is attached to the turbo on the t-shirt (because there is such a nasty screw) and wio.
Anyway, once when I was at my friend's for coffee, I got a course by truck for a change to St. Anne's Mountain and turbo replacement with a mop because it was impossible to go empty.
The adventure was made by my uncle by bus in Uk when his turbo was torn apart by the authorized service, he replaced the entire intake, including the IC, the procedure does not include cleaning the IC. Costs: "don't ask, I don't want to be nervous"

Of course, patching the cooler doesn't do the trick, because on what occasion the oil collects in it, or the turbine or the crankcase ventilation is to blame.

I had a 3 tdi turtleneck intercooler and it was also leaking oil, even as the rubber connecting the IC was cracked, oil and black smoke came out of the pipe. It was similar in the b4 pass, now I also have b5 tdi, somehow they go on and nothing happens. The condition of the oil is normal and there is no black smoke and more power.

Conclusion- the turbine is pounding with oil, or it is sick.

As if the turbine would be pounding black smoke, I think. The turbine turns on nicely above 2000 rpm. Now I was on the inspection and the exhaust gases are normal. Passat from 2000.

Well, the question is, where does the oil in the intercooler come from? After all, it's just a cooler, so much air.

Only the air that is to be cooled flows through the intercooler, as mentioned by darfur5, the oil in it is a dark turbine and the smoke from the burnt oil is blue, the turbine can `` turn on '' nicely, it just simply lets the oil into the intake system.

Of course I'm not an engine mechanic. But if there is a leak in the IC system it will suck in fake air and oil from somewhere. I know the IC is an air cooler. That's what I had in three cars in tdi and they are all still running. Now everything is fine in my b5. I can fix everything except motor and electronics, I can do it. I don't get smart and I gladly accept advice

None of us are clever, we rather try to find out what is up to us in our machines, and we learn at the same time.

I have read a bit about it. You're all right, but ??? I found here; autorult.pl/3270,intercooler-jego-rola-i-eksplatacja.

Dude ask yourself a few questions
- where is the oil in the IC from?
- what is its compressibility
- what will happen if instead of air there is in the cylinder

Depends on how much there is.
How relatively little, the engine runs off.
The more it pulls, it will crush the connecting rods because they will "hit" the incompressible oil.
The same will happen if the engine sucks water out of a puddle.

Hello everyone, the car goes on. The blame is on the pneumothorax. As someone wrote on another post, a bottle of Coca Cola to the pneumothorax and after the trouble.

Added after 18 [minutes]:

Of course, an empty 0.5l bottle, connect it to the pneumothorax tube and remember to plug the hole where the tube was.

Hello everyone reading. Shit idea with this bottle. I replaced the entire valve cover with a pneumothorax, cost 665 PLN from the VW Wroclaw Center and now it's a problem. The problem is solved. Thank you wise people for advice. Regards

Hello everyone reading. Shit idea with this bottle. I replaced the entire valve cover with a pneumothorax, cost 665 PLN from the VW Wroclaw Center and now it's a problem. The problem is solved. Thank you wise people for advice. Regards

Added after 4 [minutes]:

I bought a valve cover with pneumothorax, a new one.