Acura Engine >> OIL CONSUMPTION ON 86-94 ACURA 1.6, 1.7 & 1.8L ENG
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Acura Engine >> OIL CONSUMPTION ON 86-94 ACURA 1.6, 1.7 & 1.8L ENG
Oil Consumption On
1986-94 Acura 1.6, 1.7 & 1.8L Engines
The AERA Technical Committee offers information on oil consumption on 1986-94 Acura 1.6, 1.7 & 1.8L engines. Acura considers oil consumption when the rate is in excess of one quart to one thousand miles traveled. This engine uses a
metered oil supply to the cylinder head by means of a removeable metal oil jet located in the deck of the cylinder block.
The oil jet meters a certain amount of engine oil to the cylinder head components. During the removal process of the cylinder head, it may stick to the head and be misplaced during cleaning and handling. If the oil jet, Part
#15140PM3000, is not reinstalled during assembly, excessive amounts of engine oil will enter the cylinder head. This additional amount of oil will then collect under the valve cover and overwhelm the valve stem seals. The oil may also
enter the PCV system if the level becomes high enough. In either case, oil will enter the combustion process or the exhaust system causing oil loss.
Some AERA members increase the opening size of this orifice slightly, anytime the cylinder head has been removed from the block. Drilling the existing restrictor to .062 (1.575 mm) in size will increase the volume of oil to the cylinder
head and camshaft. That procedure has been beneficial during cold starts when ambient temperatures are very low.
Increasing the orifice hole size slightly should not overwhelm the cylinder head with oil, providing all other oil clearances are within specifications.
The AERA Technical Committee
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