Engine distributors DSG-423 User Manual

DSG-423 GENERAL INFORMATION
01-7
Inspection and Verification
1. Verify the customer concern by operating the engine
to duplicate the condition.
2. Visually inspect for obvious signs of mechanical and
electrical damage:
• Engine coolant leaks.
• Engine oil leaks.
• Fuel leaks.
• Damaged or severely worn pads.
• Loose mounting bolts, studs, and nuts.
3. If the inspection reveals obvious concerns that can
be readily identified, repair as required.
4. If the concerns remain after the inspection,
determine the symptoms and go to the symptom
chart.
Symptom Chart
Condition Possible Source Action
Difficult Starting Damaged starting system. Refer to Section 07.
Damaged charging system/battery. Refer to Section 06.
Burnt valve. Replace valve.
Worn piston. Replace piston and pin.
Worn piston rings or worn cylinder. Repair or replace cylinder blocks.
Damaged cylinder head gasket. Replace cylinder head gasket.
Damaged fuel system. Refer to Section 04.
Damaged ignition system. Refer to Section 03.
Spark plugs gapped incorrectly. Check plug gap.
Damaged hydraulic tappet or hydraulic lash adjuster. Replace tappet or lash adjuster.
Poor Idling Damaged hydraulic lash adjuster or hydraulic lash
adjuster.
Replace hydraulic lash adjuster or hydraulic lash
adjuster.
Damaged hydraulic lash adjuster guide or hydraulic lash
adjuster.
Replace hydraulic lash adjuster guide or hydraulic lash
adjuster.
Improper valve-to-valve seat contact. Replace valve or valve seat.
Damaged cylinder head gasket. Replace cylinder head gasket.
Malfunctioning or damaged fuel system. Refer to Section 04 of this manual*.
Malfunctioning or damaged ignition system. Refer to Section 03 of this manual*.
Spark plugs gapped incorrectly. Check plug gap.
Malfunctioning or damaged IAC motor or system. Refer to Section 03 of this manual.
Abnormal combustion Damaged hydraulic lash adjuster or hydraulic lash
adjuster.
Replace hydraulic lash adjuster or hydraulic lash
adjuster
Damaged hydraulic lash adjuster guide or hydraulic lash
adjuster.
Replace hydraulic lash adjuster guide or hydraulic lash
adjuster.
Burnt or sticking valve. Repair or replace valve.
Weak or broken valve spring Replace valve spring
Carbon accumulation in combustion chamber. Eliminate carbon buildup.
Malfunctioning or damaged fuel system Refer to Section 04 of this manual*.
Malfunctioning or damaged ignition system. Refer to Section 03 of this manual*.

Engine distributors DSG-423 Specifications

General

Brand	Engine distributors
Model	DSG-423
Category	Engine
Language	English