broken_cougar99
新手上路
- 注册
- 2007-01-31
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- 68
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First, let start with some background and explain the reason for this DIY.
Most modern car are equipped with a crank case ventilation system. In most case, it is Positive Crankcase Valve, known as PCV. Some exotic cars such as BWM, Audi, VW uses Crank case breather with oil separator. This system is designed to relief pressure due to Fuel mixture escape through piston rings into crankcase and mixed with engine oil vapor.
For PCV system, the fuel & air mixture and the oil vapor in the crankcase is redirected to the PCV which goes back into intake manifold and hopefully it will burn through combustion.
For Crankcase breather with oil separator system, the fuel & air mixture and oil vapor goes through the oil separator, which turns the engine oil vapor to liquid again, the engine oil is redirected into the lubrication system - this process usually end up with bring contamination into lubrication system. The fuel & air mixture along with remaining of oil vapor is redirected to intake manifold for further combustion.
In both case, the oil vapor will still enter intake manifold and burn during combustion which causing engine oil consumption and carbon build up in intake and valves. Especially on "sportier" engines such as a turbo/supercharged setup engine - VW and Audi has tech bulletin stated 0.5 liter / 1000 km engine oil consumption is normal. I believe BMW has similar bulletin.
This DIY will help to eliminate the carbon build up(will not effect the engine oil consumption).
Parts List
1. Crankcase ventilation hose, knowns as PCV hose (fuel hose, hydraulic hose or any high pressure hose that can withstand heat and fuel) - length will vary on cars - in my case $7 from Canadian tire.
2. Some hose Clamps - In my case, 4 @ $0.97/each.
3. Air compressor filter(about $30.00 for homedepot or hardware store).
4. Couple of cold beers.
Procedure
1. Locate Crankcase ventilation hose from Crankcase to PCV
2. Using new PCV hose to reroute the hose to Air compressor filter.
3. Secure air compressor filter in engine compartment.
4. Using New PCV hose to connect the air compressor to intake manifold.
5. Secure all hose with hose clamp.
6. Start the engine and watch the Air compressor filter filled with dirty oil.
7. Empty oil every couple thousands km (this may vary on cars).
I will try to load some pictures once I figure out how..
Most modern car are equipped with a crank case ventilation system. In most case, it is Positive Crankcase Valve, known as PCV. Some exotic cars such as BWM, Audi, VW uses Crank case breather with oil separator. This system is designed to relief pressure due to Fuel mixture escape through piston rings into crankcase and mixed with engine oil vapor.
For PCV system, the fuel & air mixture and the oil vapor in the crankcase is redirected to the PCV which goes back into intake manifold and hopefully it will burn through combustion.
For Crankcase breather with oil separator system, the fuel & air mixture and oil vapor goes through the oil separator, which turns the engine oil vapor to liquid again, the engine oil is redirected into the lubrication system - this process usually end up with bring contamination into lubrication system. The fuel & air mixture along with remaining of oil vapor is redirected to intake manifold for further combustion.
In both case, the oil vapor will still enter intake manifold and burn during combustion which causing engine oil consumption and carbon build up in intake and valves. Especially on "sportier" engines such as a turbo/supercharged setup engine - VW and Audi has tech bulletin stated 0.5 liter / 1000 km engine oil consumption is normal. I believe BMW has similar bulletin.
This DIY will help to eliminate the carbon build up(will not effect the engine oil consumption).
Parts List
1. Crankcase ventilation hose, knowns as PCV hose (fuel hose, hydraulic hose or any high pressure hose that can withstand heat and fuel) - length will vary on cars - in my case $7 from Canadian tire.
2. Some hose Clamps - In my case, 4 @ $0.97/each.
3. Air compressor filter(about $30.00 for homedepot or hardware store).
4. Couple of cold beers.
Procedure
1. Locate Crankcase ventilation hose from Crankcase to PCV
2. Using new PCV hose to reroute the hose to Air compressor filter.
3. Secure air compressor filter in engine compartment.
4. Using New PCV hose to connect the air compressor to intake manifold.
5. Secure all hose with hose clamp.
6. Start the engine and watch the Air compressor filter filled with dirty oil.
7. Empty oil every couple thousands km (this may vary on cars).
I will try to load some pictures once I figure out how..
