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BASE ENGINE MISFIRE WITH COOLANT CONSUMPTION BASE ENGINE MISFIRE WITH EXCESSIVE OIL CONSUMPTION ENGINE NOISE ON START-UP, BUT ONLY LASTING A FEW SECONDS Cause Correction Faulty cylinder head gaskets and/or cracking 1. Inspect for spark plugs saturated by coolant. Refer to Spark Plug 2. Perform a cylinder leak down test. Refer to Cylinder Leakage Test. 3. Inspect the cylinder heads and engine block for damage to the coolant 4. Repair or replace, as required. Cause Correction Worn valves, valve guides and/or valve stem 1. Inspect the spark plugs for oil deposits. Refer to Spark Plug Inspection . 2. Repair or replace, as required. Worn piston rings 1. Inspect the spark plugs for oil deposits. Refer to Spark Plug Inspection . 2. Inspect the cylinders for a loss of compression. Refer to Engine 3. Perform cylinder leak down and compression testing to determine the 4. Repair or replace, as required. Cause Correction Incorrect oil filter without anti-drainback Install the correct oil filter.
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Mechanical - 4.8L, 5.3L, 6.0L, 6.2L, or 7.0L - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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