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in developing and exporting high quality fencing system since 2009.
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At IV Auto Parts we work as a complete supplier: We develop, produce and sell finishing systems and make sure the operators are fully instructed and able to run the Parts.
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sales@ivautoparts.com
Tel.: +86 13933893619
What happens when a camshaft goes bad?
2025-06-13
Summary:
When a camshaft goes bad or fails, it can cause serious engine problems due to its critical role in controlling valve timing. Here’s what typically happens:
When a camshaft goes bad or fails, it can cause serious engine problems due to its critical role in controlling valve timing. Here’s what typically happens:
Key Symptoms & Consequences:
1. Engine Misfires & Rough Idling
Worn/damaged cam lobes fail to open valves properly, disrupting air-fuel mixture flow.
Result: Jerking, hesitation, or shaking at idle or under load.
2. Loss of Engine Power
Incorrect valve timing reduces engine efficiency.
Acceleration feels sluggish; vehicle struggles uphill or when overtaking.
3. Loud Ticking/Tapping Noises
Worn cam lobes or damaged lifters cause metallic tapping sounds from the valve cover (often worsening with RPM).
4. Engine Stalling or Failure to Start
Severe timing issues prevent proper combustion.
A failed camshaft position sensor (often linked to the camshaft) can disrupt ignition/fuel injection.
Poor valve timing reduces combustion efficiency, forcing the engine to burn more fuel for the same output.
6. Check Engine Light (CEL)
Sensors detect timing errors (e.g., trouble codes: `P0340` Camshaft Position Sensor Malfunction, `P0010` Camshaft Timing Issues).
7. Metal Debris in Oil
A disintegrating camshaft contaminates oil with metal shavings, damaging bearings and other components.
8. Engine Won’t Crank
In extreme cases (e.g., snapped camshaft), valves remain stuck, halting engine rotation.
Critical Risk: Engine Destruction
In interference engines, incorrect valve timing can cause pistons to strike open valves, bending valves, fracturing pistons, or cracking the cylinder head. This often requires a full engine rebuild or replacement.
Common Causes of Failure:
Poor lubrication (low oil, sludge buildup).
Wear due to high mileage.
Timing belt/chain failure (causing the camshaft to stop spinning).
Manufacturing defects.
What to Do:
If you suspect camshaft issues:
1. Stop driving immediately to avoid catastrophic damage.
2. Diagnose using OBD2 scanner codes and inspect valve train components.
3. Repair/replace the camshaft, lifters, sensors, and damaged parts. Flush the oil system if debris is present.
Key Symptoms & Consequences:
1. Engine Misfires & Rough Idling
Worn/damaged cam lobes fail to open valves properly, disrupting air-fuel mixture flow.
Result: Jerking, hesitation, or shaking at idle or under load.
2. Loss of Engine Power
Incorrect valve timing reduces engine efficiency.
Acceleration feels sluggish; vehicle struggles uphill or when overtaking.
3. Loud Ticking/Tapping Noises
Worn cam lobes or damaged lifters cause metallic tapping sounds from the valve cover (often worsening with RPM).
4. Engine Stalling or Failure to Start
Severe timing issues prevent proper combustion.
A failed camshaft position sensor (often linked to the camshaft) can disrupt ignition/fuel injection.
Poor valve timing reduces combustion efficiency, forcing the engine to burn more fuel for the same output.
6. Check Engine Light (CEL)
Sensors detect timing errors (e.g., trouble codes: `P0340` Camshaft Position Sensor Malfunction, `P0010` Camshaft Timing Issues).
7. Metal Debris in Oil
A disintegrating camshaft contaminates oil with metal shavings, damaging bearings and other components.
8. Engine Won’t Crank
In extreme cases (e.g., snapped camshaft), valves remain stuck, halting engine rotation.
Critical Risk: Engine Destruction
In interference engines, incorrect valve timing can cause pistons to strike open valves, bending valves, fracturing pistons, or cracking the cylinder head. This often requires a full engine rebuild or replacement.
Common Causes of Failure:
Poor lubrication (low oil, sludge buildup).
Wear due to high mileage.
Timing belt/chain failure (causing the camshaft to stop spinning).
Manufacturing defects.
What to Do:
If you suspect camshaft issues:
1. Stop driving immediately to avoid catastrophic damage.
2. Diagnose using OBD2 scanner codes and inspect valve train components.
3. Repair/replace the camshaft, lifters, sensors, and damaged parts. Flush the oil system if debris is present.
Next:
Next：None
