2007 CRDi 2.2 turbo issues - Hyundai Forums : Hyundai Forum
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post #1 of 8 (permalink) Old 06-30-2015, 07:27 PM Thread Starter
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Red face 2007 CRDi 2.2 turbo issues

Hello members,
Just seeking some help and assistance with a 2007 Diesel Santa fe.

I had some issues with oil leaks, and took the car to Hyundai to be served and resolved. Anyways, I was basically told that the oil is coming from the turbo seals, and pushing its way up to the intercooler and leaking from the seals on the intercooler. So, have been told a new turbo is required.

Anyways, the car has 230,000K on the motor. Wouldn't the car be blowing smoke if the seals were gone? As it drives perfectly normal....minus the oil dropping issues.

Also, I have been told the turbo is a variable nozzle unit, and thus non repairable and needs to be replaced..but you can also buy replacement turbo cartridges for the turbo. Can anyone explain why that is the case?

Any help is greatly appreciated! Thanks guys!
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post #2 of 8 (permalink) Old 07-01-2015, 03:18 AM
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Take it to a turbo specialist or diesel specialist for a second opinion. Hyundai (Korea) make great cars but Hyundai (Australia) have questionable service.


Blowing smoke will be apparent if the oil is being burnt in the motor AND you don't have a DPF (Particulate Filter). 2.2 Turbo Diesels of that era (like mine) have a DPF.
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post #3 of 8 (permalink) Old 07-28-2015, 12:11 AM
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At those sort of Kilometres blow by from the Turbo is not uncommon...

There are a few things you can do to keep the turbo ticking over even with some leaking seals... Lots of Landcruisers, Nissan Patrols also have some turbo seal leaks at high mileage.

Fitting an oil catch can to the inter cooler can catch some of the excess oil... If the car isn't consuming much oil at each service interval it isnt necessary to replace, It's just worn...

You can also go up a grade of oil in the process. Something a little thicker to account for the wear. I had recently changed to a 10w/40 from a 10w/30.. The motor was a little quieter and there was less consumption of oil between changes... (My turbo still failed eventually though).

Given the motor is a little older, reduce oil change times. Plan changes a little earlier than normal scheduling to keep the oil cleaner. This will buy time for the turbo bearings. Given the turbo in the Sante Fe is wet type (oil cooled and lubricated) the oil lubricates the shaft bearings ever so slightly (the bearings roll on microns of oil) and the cleaner the oil, the longer they last. (From an inspection recently the bearings in my original Turbo appear to be brass/alloy, high temp resistant and long wearing as long as they are lubricated... Cleaner oil means less contaminants, the longer you leave oil services the higher the possibility of gumming, sludge building over time.

Any obstruction to the oil lines to and from the turbo will see it starve/overheat and fail..

If you inspect your intercooler and find light oil, or even enough to cover the tip of your finger at the opening, don't be overly alarmed. Only issue with oil like this is it gets sucked through the induction and burnt... This can impact the EGR valve causing poor running, starting, and sluggish driving... Fit an oil catch can to you intercooler and keep and eye on the catch can every few weeks, draining it and topping up the engine oil level if required. Hot engines produce oil mist which rises and is ventilated, any oil leak from the turbo will also misted when hot and once cooled it settles, pooling at openings and galleries of your intercooler... It looks like more than it is!

Regarding turbo cartridge replacement, the real issue is balancing. The turbo cartridge needs to be balanced and refitted correctly in order to function. The variable nozzles aren't user serviceable... Having taken some pics of the mechanism, it requires assembly at a factory or reconditioned for proper function. It can be done, but I don't think it's cost effective over buying a replacement turbo, an unbalanced cartridge can self destruct, causing much more damage than the cartridge cost.

A replacement turbo I recently purchased came with full factory diagnostics, balance sheet and QC check. Balancing is important for something spinning over 150,000 or more rpm's
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Last edited by sed8ed; 07-28-2015 at 12:24 AM. Reason: Added turbo cartridge info
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post #4 of 8 (permalink) Old 11-30-2015, 06:29 PM Thread Starter
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Thanks for the detailed response... I managed to get a new turbo and intercooler OEM from Korea. Had them installed and running on thr Santa Fe for some time now with no dramas.

Just looking at installing an oil catch can to collect the blow by oil vapours. Have you installed one on a santa fe before? Any ideas where it plumbs into the intercooler? Thanks for the help!
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post #5 of 8 (permalink) Old 12-23-2015, 07:45 PM Thread Starter
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Anyone install one???
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post #6 of 8 (permalink) Old 05-12-2016, 02:30 PM
iua
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i repaired my turbo in a turbo specialist workshop. there is a repair kit for each turbo
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post #7 of 8 (permalink) Old 06-16-2017, 02:41 AM
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Quote:
Originally Posted by kitesurfer View Post
Thanks for the detailed response... I managed to get a new turbo and intercooler OEM from Korea. Had them installed and running on thr Santa Fe for some time now with no dramas.

Just looking at installing an oil catch can to collect the blow by oil vapours. Have you installed one on a santa fe before? Any ideas where it plumbs into the intercooler? Thanks for the help!
Hi kitesurfer, i also have the same problem with my turbo. based on my research if your turbo is sending an oil to your intercooler it might be the oil seal has been worn out no need to replace the turbo if that's the case. there is a $30 - $50 turbo rebuild kit on ebay for santa fe which i bought and soon to service it myself. By the way can you share us the contact where you bought your OEM parts from Korea? Thank you so much in advance.
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post #8 of 8 (permalink) Old 06-16-2017, 07:04 PM Thread Starter
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Yeah, well with my situation i was advised the exact same from Hyundai Australia. They said that Oil in the intercooler is only caused by leaking turbo seals... WRONG.
I replaced the turbo and intercooler as "diagnosed" by Hyundai only to find the problem mildly resolved.
It ended up being leaking injectors. Causing the oil blow by, passing the turbo and into the intercooler. Get the injectors pressure tested incase this may be the true fault.. the seller I used was:
http://www.ebay.com.au/usr/rotemtree

Best of luck!


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