Initial ignition skip (Chevrolet Captiva 1)

Contents: Initial misfire without internal… ↧ Initial misfire with abnormal… ↧ Initial misfire with abnormal valve… ↧ Initial misfire with coolant… ↧ Initial misfire with excessive oil… ↧

Initial misfire without internal engine noise

Cause	Elimination
High oil pressure.	Check oil pressure. See "Checking oil pressure" in this section. If necessary, repair or replace damaged components.
The accessory drive belt is worn, damaged or incorrectly installed. It has cracks, unevenness or missing segments. A misfire DTC can occur without actual misfire causing conditions being present.	Carefully inspect the components of the accessory drive system. Repair or replace damaged components as necessary. See. Section 1C1, Engine Mechanical - FAM II 2.4D.
Accessory drive system components are worn, damaged, or improperly installed. A misfire DTC can occur without actual misfire causing conditions being present.	Carefully inspect the components of the accessory drive system. If necessary, repair or replace damaged components.
The crankshaft pulley is damaged, loose, or incorrectly installed. A misfire DTC can occur without actual misfire causing conditions being present.	Check the crankshaft pulley. Repair or replace damaged components as necessary. See. Section 1C1, Engine Mechanical - FAM II 2.4D.
The crankshaft timing gear is worn, damaged or incorrectly installed. A worn or damaged crankshaft timing gear can cause a variety of symptoms depending on the severity and location of the wear or damage. Systems with electronic communication, direct ignition system (DIS) or ignition coil on each cylinder, with significant damage to the breaker ring gear, may show an intermittent loss of crankshaft position, loss of signal and then recovery of crankshaft position. Electronically coupled systems, direct ignition system (DIS) or ignition coil on each cylinder with minor damage to the breaker ring gear may show no misfires and no loss of crankshaft position. Systems with mechanical connection, high voltage switch with significant damage to the ring of the interrupter gear can cause additional pulses, affect the fuel supply and the supply of the ignition spark.	Check the crankshaft position sensor. Carefully inspect the crankshaft timing gear. Check the crankshaft. If necessary, repair or replace damaged components.
The engine flywheel is damaged, not sufficiently secured, or is installed incorrectly. A misfire DTC can occur without actual misfire causing conditions being present.	Check the flywheel. Repair or replace damaged components as necessary. See. Section 1C1, Engine Mechanical - FAM II 2.4D.
The exhaust system is damaged, improperly installed or clogged, the pipes are destroyed or crushed, the mufflers are clogged or the catalytic converters are out of order. A diagnostic trouble code (DTC) may set even without actual conditions causing the malfunction.	Check the exhaust system components. If necessary, repair or replace damaged components.
Vacuum hoses are worn, damaged or improperly installed.	Check the vacuum system components. If necessary, repair or replace damaged components.
The manifold absolute pressure sensor is damaged or installed incorrectly; the rubber sealing sleeve is cut, torn or missing.	Check the manifold absolute pressure sensor. If necessary, repair or replace damaged components.
The electronic throttle body is damaged or incorrectly installed.	Carefully inspect the electronic throttle body. If necessary, repair or replace damaged components.
The intake manifold is damaged or incorrectly installed.	Check the intake manifold. If necessary, repair or replace damaged components.
The cylinder head is damaged or incorrectly installed. Oil consumption may or may not cause an engine to misfire.	Check spark plugs. See. "Checking the spark plug" in this section "Engine controls". Check the engine compression ratio. See "Compression Pressure Check" in this section. Carefully inspect the cylinder heads. Check the engine block. If necessary, repair or replace damaged components.
The valve spring is worn, damaged, moves freely, or is broken.	Check the valve springs. If necessary, repair or replace damaged components.
The valve stem is worn or damaged, there is carbon deposits on the valve seat or on its stem.	Check the valves. Check the valve guides. If necessary, repair or replace damaged components.
The valve guide is worn or damaged.	Check the valve guides. Carefully inspect the valve guides and the valves themselves. If necessary, repair or replace damaged components.
The valve lifter is worn, damaged or dirty.	Check the valve lifters. Check the camshaft. If necessary, repair or replace damaged components.
The camshaft lobe is worn or damaged.	Check the camshaft. Check the valve lifters. If necessary, repair or replace damaged components.
The drive belt and timing sprockets are worn, damaged or poorly secured	Carefully inspect the timing belt and sprockets. If necessary, repair or replace damaged components.
The piston is worn, damaged or incorrectly installed. The pistons must be installed accordingly with the marking or recess on the top surface of the piston facing the front of the engine; the piston pins must be centered in the connecting rod pin bore. Oil consumption may or may not cause an engine to misfire.	Check spark plugs. See. "Checking the spark plug" in this section. Check the engine compression ratio. See "Compression Pressure Check" in this section. Carefully inspect the cylinder bores. Check the pistons. Check the piston pins. Check the connecting rods. If necessary, repair or replace damaged components.

Initial misfire with abnormal internal noises occurring in the lower part of the engine

Cause	Elimination
The accessory drive belt is worn, damaged or incorrectly installed. It has cracks, unevenness or missing segments. A misfire DTC can occur without actual misfire causing conditions being present.	Carefully inspect the components of the accessory drive system. Repair or replace damaged components as necessary. See. Section 1C1, Engine Mechanical - FAM II 2.4D.
Accessory drive system components are worn, damaged, or improperly installed. A misfire DTC can occur without actual misfire causing conditions being present.	Carefully inspect the components of the accessory drive system. Repair or replace damaged components as necessary. See. Section 1C1, Engine Mechanical - FAM II 2.4D.
The crankshaft pulley is worn, damaged, improperly installed or not sufficiently secured. A misfire code may occur without actual misfire causing conditions present.	Check the crankshaft pulley. Repair or replace damaged components as necessary. See. Section 1C1, Engine Mechanical - FAM II 2.4D.
The engine flywheel is worn, damaged, improperly installed or not sufficiently secured. A misfire code may occur without actual misfire causing conditions present.	Check the engine flywheel. Repair or replace damaged components as necessary. See. Section 1C1, Engine Mechanical - FAM II 2.4D.
The piston is worn, damaged or incorrectly installed. The pistons must be installed accordingly with the marking or recess on the top surface of the piston facing the front of the engine; the piston pins must be centered in the connecting rod pin bore. Oil consumption may or may not cause an engine to misfire.	Check spark plugs. See. Section 1A2, General Engine Data - FAM II 2.4D. Check the engine compression ratio. See "Compression Pressure Check" in this section. Carefully inspect the cylinder bores. Check the pistons. Check the piston pins. Check the connecting rods. Repair or replace damaged components as necessary. See. Section 1C1, Engine Mechanical - FAM II 2.4D.
The crankshaft thrust bearing is worn, damaged or improperly installed. A misfire code may occur without actual misfire causing conditions present.	Check the crankshaft. Check the crankshaft thrust bearing. If necessary, repair or replace damaged components.

Initial misfire with abnormal valve train noises

Cause	Elimination
The valve stem is worn or damaged, there is carbon deposits on the valve seat or on its stem.	Check the valves. Check the valve guides. If necessary, repair or replace damaged components.
The valve lifter is worn, damaged or dirty.	Check the valve lifters. Check the camshaft. If necessary, repair or replace damaged components.
The camshaft lobe is worn or damaged.	Check the camshaft. Check the valve lifters. If necessary, repair or replace damaged components.
The timing belt is worn, damaged, or sagging freely, or the sprockets are loosely secured.	Carefully inspect the timing belt and sprockets. If necessary, repair or replace damaged components.

Initial misfire with coolant consumption

Cause	Elimination
The cylinder head is damaged or incorrectly installed. Coolant consumption may or may not cause an engine misfire.	Check spark plugs. See. Section 1C1, Engine Mechanical - FAM II 2.4D. Check the engine compression ratio. See "Compression Pressure Check" in this section. Carefully inspect the cylinder heads. Check the engine block. If necessary, repair or replace damaged components.

Initial misfire with excessive oil consumption

Cause	Elimination
The valve is worn or damaged.	Check the valves. Check the valve guides. If necessary, repair or replace damaged components.
Piston rings are worn, damaged or incorrectly installed. Piston rings must be installed accordingly with the marking or recess on the top surface of the piston ring facing upward.	Check spark plugs. See. Section 1A2, General Engine Data - FAM II 2.4D. Check the engine compression ratio. See "Compression Pressure Check" in this section. Carefully inspect the cylinder bores. Check the pistons. Check the piston pins. Check the connecting rods. If necessary, repair or replace damaged components.