Last post on Aug 20, 2010 at 8:40 AM
You are in the Jeep Liberty and Jeep Liberty Diesel
What is this discussion about?
Jeep Liberty, Diesel, SUV
#10 of 13 Re: seeing other problems?? [hammerboyone]
Apr 21, 2010 (12:06 pm)
I have a 2005 liberty CRD and it 90,000 miles on it. recently I have experienced smoking from the exhaust at idle. I replaced the pressure relief valve for the crankcase which is connected to the intake (preturbo). That did not solve my problem. I either have a turbo with bad seals or the engine is losing ring compression. After reading your message I am leaning more towards bad turbo. I have no warranty left so have gone on line to find a replacement turbo. The turbo is made by Garrett and I found one for $795.00 exchange. this is about 1200.00 less than the list at the dealer. What I am wondering is if anyone has experienced this oil burning smoke prior to finding out the turbo is bad or if I might have a larger problem in the engine.
#11 of 13 Re: seeing other problems?? [tcluff]
Apr 22, 2010 (5:46 am)
Worn piston rings affect general engine performance, worn exhaust valve guides will let oil in the combustion chamber mainly during deceleration and leaking turbo seals should give you an engine malfunction error via the Lambda sensor. When turbo seals are worn, the higher the oil pressure (or engine RPM) the more smoke you should produce.
The first test is to check your engine compressions (4) taken through the glow-plug holes. Then monitor the engine oil pressure with a manometer instead of using the digital information; a good technician will evaluate the condition of the engine by observing the oil pressure variations. Perhaps your oil is not thick enough? Some turbos only last 100,000 miles
#12 of 13 Re: seeing other problems?? [tcluff]
Apr 22, 2010 (11:52 am)
I have had one turbo car previously, a 1985 Dodge 2.2L turbo and it never gave me a lick of trouble (the turbo) in 125K miles. I have nearly 65K miles on my 2005 CRD and the turbo runs fine. What I have learned about turbos from my Dodge pretty much applies to the CRD.
1. Be gentle with the engine and turbo for the first three to five miles of driving this is in spite of the fact we all use (hopefully) synthetic oil in the engine.
2. After driving any length of time or speed, it is good to let the turbo cool down before engine shutdown. The user's guide tells you how long and then add 50% more time.
3. Change oil and filter more frequently than called for by the manufacturer. It may seem like a waste of money and time but it is cheaper than replacing major engine components.
4. If you are using Mobil 1 0W-40, then you are asking for trouble. Several Jeep dealers I know of, including the one I use, do not use Mobil 1 any longer in any of the diesels or the spark ignition engines. The dealer I use gets RedLine 5W-40 diesel oil. I use it and I have been happy with it for some time.
5. Smoke at idle is as I see it not a turbo issue. Are you having oil consumption issues? You do not tell us what kind or color the smoke is so it makes it hard to diagnose the issue.
#13 of 13 Re: seeing other problems?? [tcluff]
Aug 20, 2010 (8:40 am)
My turbo is starting to leak oil and I have experienced the loss of power and restarting the vehicle twice within the last 4 months and increasing black smoke at higher RPMs. Also have an EGR engine code. I currently have oaver 140K miles, so I guess it's about time. I was wondering where you found the Garrett turbo for $795 and what model is it?