Turbo blowing oil - Chrysler 300C Forum: 300C & SRT8 Forums
 
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post #1 of 8 (permalink) Old 05-10-2019, 01:01 PM Thread Starter
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Turbo blowing oil

I'm after a little help.... I know there is other topics that are similar to this, but none that are specific to the issue I seem to be having. I had an oil leak on the car and narrowed it down to the turbo blowing oil out of the outlet (see pic attached) and blowing it into the intercooler, which I know other people have had issues with... so my mechanic has had the turbo off and sent it away to be reconditioned.

So it was done and a new actuator fitted and put back on, but the same is happening again, it seems to be blowing oil out of the turbo again.

Is it a problem with the turbo, or could it be another issue that is causing this? I need to know who I need to shout at lol

The black inlet pipe for the turbo isn't on, so it can't be sucking oil in that way. He just can't work out where the oil is coming from. He has checked the turbo and there is no play in it.

Can't think of any other info

Any help would be greatly appreciated
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post #2 of 8 (permalink) Old 05-10-2019, 01:06 PM
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Did he pull all of the spark plugs and look for signs of oil in the cylinders?
Perhaps a bad or stuck ring is allowing oil to be blown out the exhaust.

Please come back and tell us what the solution to your problem was, so that others coming here can learn from it.
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post #3 of 8 (permalink) Old 05-10-2019, 02:31 PM
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Given you are posting in the CRD section you won't have spark plugs as mentioned above.

How much oil are you losing? There's a vent pipe on the inlet side of the turbo which some people put catch cans on. Our cars will usually show some evidence of oil through the turbo
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post #4 of 8 (permalink) Old 05-10-2019, 03:04 PM
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Quote:
Originally Posted by DGO View Post
Given you are posting in the CRD section you won't have spark plugs as mentioned above.

How much oil are you losing? There's a vent pipe on the inlet side of the turbo which some people put catch cans on. Our cars will usually show some evidence of oil through the turbo
Good point. DOH!!!
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post #5 of 8 (permalink) Old 05-10-2019, 03:15 PM Thread Starter
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Quote:
Originally Posted by DGO View Post
Given you are posting in the CRD section you won't have spark plugs as mentioned above.

How much oil are you losing? There's a vent pipe on the inlet side of the turbo which some people put catch cans on. Our cars will usually show some evidence of oil through the turbo
Thanks for that, I was almost thinking I was wrong lol

I knew about the breather pipe so we took it off and oil was still coming out of the outlet from the turbo and it didn't look like there was any coming out of it while it was off with the engine running, so it looks like it wasn't coming from there and the inlet is clean so it didn't look like there was much gone in through that way.

I'm guessing that there is more than should be coming out as you can wipe the outlet and start the car and within a minute you can see the oil coming out, its not that fast but its enough to know that it shouldn't be that much (if that makes any sense lol). At the minute we're just trying to work out where the oil is coming from, as there isn't any going in through the inlet, I'm kinda hoping its something that doesn't involve the turbo coming back off.

Last edited by MadCobbler; 05-10-2019 at 03:19 PM.
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post #6 of 8 (permalink) Old 05-21-2019, 11:14 AM
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There is another possibility, dependant on Crank Case vent pipes.
With most Audi, Mercedes, BMW etc, the perceived turbo oil is not from the Turbo at all.

On a BMW X5 there was a major engine blow-up / runaway diesel issue, the fix upgrade was a centrifugal oil separator to remove oil droplets/mist from the crank case vent prior to venting Crank case fumes to induction.

The Go-faster Audi TT guys tend to fit a Catch-Can set up on the Crank vent between the engine & turbo intake.
I will but money on the likelihood your turbo is fine, & this is where the oil is coming from.

Also note, if this is the case, your intercooler will be 30mm deep in oil & the fins all gunked up too... & all the pipes to/from the intercooler will be oil wet.

The V6 Diesel is a big & high compression engine... and there will be a lot of crank case gasses to clear, even on a good low mileage engine.

a Catch Can is the easy fix.

If you have this much oil in the turbo & pipes, there is a significant risk of an engine runaway...
Scary link below to show you what happens.
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post #7 of 8 (permalink) Old 05-22-2019, 06:38 AM
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I agree with GrantB above, change the PCV valve (may be a damaged diaphragm) and install a catch can (do make sure the pipework is on the large side - 15 to 20mm id). Then, remove (and replace with a straight through pipe if you're up for it) and empty/clean the turbo resonator - a lot of the oil collects in there.
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post #8 of 8 (permalink) Old 05-22-2019, 06:42 AM
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I pushed a piece of rolled sheet metal into the turbo resonator, so it expanded slightly when located, & tack-welded it in place.... Personally, I like the turbo whistle.
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