| Saab Engine >> OIL CONSUMPTION |
Oil Consumption On
Saab 2.0L 16 Valve DOHC Engines
The AERA Technical Committee has become aware of another possible cause for abnormally high oil consumption on Saab 900 DOHC application. Usually, oil consumption can be traced to piston ring, valve guide and/or valve seal wear. An additional cause may be a reversed one way check valve for the crankcase ventilation system on turbo charged engines.
It is also possible for oil to enter the PCV system because of a slight distortion of the camshaft bearing cap to bolt mating surfaces. At operating temperature, it is possible for oil to spray from underneath the bolt into the PCV system inlet. Oil is then drawn into the PCV system and engine air intake system.
Although engine oil passes only through one of the camshaft bearing cap bolts, a sealing washer, Part #91-14-885, should be installed under all bolts to maintain equal pressure on the bearing cap. Each bolt should be torqued to 11 lbs.ft. during assembly.
The AERA Technical Committee
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