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post #1 of 11 (permalink) Old 10-25-2012, 10:43 PM Thread Starter
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2005 Cobalt Loosing Oil, but Where? Or is It...

2005 Cobalt loosing oil, but where? Or is it?

My 2005 Cobalt 2.2L seems to be loosing oil.
  • No Oil in the Coolant
  • No Coolant in the Oil
  • No leaks anywhere
  • No smoking oil out of the exhaust

Today after an oil change two months ago I checked the dipstick and there was not oil on the dip stick.

I added one liter of oil then I could see 2 out of 4 notches on the dip stick.
Where is the oil going?
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post #2 of 11 (permalink) Old 10-25-2012, 10:47 PM
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Rear or front main seal maybe. Any drips on the bottom of the motor? If its a manual, any grabbing clutch? How many miles on it?

Last edited by scagnetti76; 10-25-2012 at 10:49 PM. Reason: spelling
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post #3 of 11 (permalink) Old 10-25-2012, 11:06 PM Thread Starter
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Quote:
Originally Posted by scagnetti76 View Post
Rear or front main seal maybe. Any drips on the bottom of the motor? If its a manual, any grabbing clutch? How many miles on it?
Clutch feels fine and I've never seen any oil leaking from the bottom of then engine. 160,000 km.
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post #4 of 11 (permalink) Old 10-26-2012, 03:36 AM
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how many miles were put on in those 2 months. Alot of engines burn a small amount in everyday running without creating the civic blue smoke condition. @ 8,000 km my oil has dropped half the stick

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post #5 of 11 (permalink) Old 10-26-2012, 04:52 AM
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Try and engine oil treatment maybe!!! Maybe PCV isn't working as it should.

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post #6 of 11 (permalink) Old 10-26-2012, 05:03 AM
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we have a pcv valve? wheres it hiding?

Coby is right though, bad pcv can make it burn oil

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post #7 of 11 (permalink) Old 10-26-2012, 05:14 AM
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Oil catch can ftw

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post #8 of 11 (permalink) Old 10-26-2012, 02:51 PM Thread Starter
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Ok I will check out the pvc valve. I could have out on 8K in 2 months I will keep and eye out for that too.
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post #9 of 11 (permalink) Old 10-26-2012, 03:50 PM
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Crankcase Ventilation System Description

A crankcase ventilation system is used to consume crankcase vapors in the combustion process instead of venting them to atmosphere. Fresh air from the intake system is supplied to the crankcase, mixed with blow by gases and then passed through a calibrated orifice into the intake manifold.

Operation




The primary control is through the positive crankcase ventilation (PCV) orifice which meters the flow at a rate depending on inlet vacuum. The PCV orifice is an integral part of the camshaft cover. If abnormal operating conditions occur, the system is designed to allow excessive amounts of blow by gases to back flow through the crankcase vent into the intake system to be consumed by normal combustion.

Results of Incorrect Operation
A plugged orifice may cause the following conditions:

• Rough idle

• Stalling or slow idle speed

• Oil leaks

• Sludge in engine

A leaking orifice may cause the following conditions:

• Rough idle

• Stalling

• High idle speed

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Last edited by Coby7; 10-26-2012 at 03:55 PM.
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post #10 of 11 (permalink) Old 10-28-2012, 11:45 AM
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hey i am just wondering if you have found the problem?
mine is doing the same thing but it only has 114000 KM on it and it is consuming 1l of oil like every week?
thanks

nick
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