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The timing chain wheel is the sequence (time) of valve opening and closing (time) ignition when the engine is running. Under the connection of "timing", the "synchronous" operation shall be maintained at all times. During the working process of the automobile engine, four processes of air intake, compression, explosion and exhaust constantly occur in the cylinder. In addition, the timing of each step should be matched with the movement state and position of the piston, so that the air intake and exhaust as well as the rise and fall of the piston can be coordinated. The timing chain wheel plays a "bridge" role in the engine, transferring the force to the corresponding parts under the drive of the crankshaft
  • Hyundai timing sprocket 1007
    Hyundai timing sprocket 1007

    Category: Hyundai timing sprocket

  • Hyundai timing sprocket 1008
    Hyundai timing sprocket 1008

    Category: Hyundai timing sprocket

  • Hyundai timing sprocket 1015
    Hyundai timing sprocket 1015

    Category: Hyundai timing sprocket

  • Hyundai timing sprocket 1016
    Hyundai timing sprocket 1016

    Category: Hyundai timing sprocket

  • Hyundai timing sprocket 1020
    Hyundai timing sprocket 1020

    Category: Hyundai timing sprocket

  • Hyundai timing sprocket 1021
    Hyundai timing sprocket 1021

    Category: Hyundai timing sprocket

  • Hyundai timing sprocket 1022
    Hyundai timing sprocket 1022

    Category: Hyundai timing sprocket

  • Hyundai timing sprocket 1023
    Hyundai timing sprocket 1023

    Category: Hyundai timing sprocket

  • Hyundai timing sprocket 1030
    Hyundai timing sprocket 1030

    Category: Hyundai timing sprocket

  • Hyundai timing sprocket 1031
    Hyundai timing sprocket 1031

    Category: Hyundai timing sprocket

  • Hyundai timing sprocket 1033
    Hyundai timing sprocket 1033

    Category: Hyundai timing sprocket

  • Hyundai timing sprocket 1039
    Hyundai timing sprocket 1039

    Category: Hyundai timing sprocket

Car Engine Timing Sprocket Manufacturers

Huzhou Jingtong Auto Parts Manufacturing Co., Ltd is China car engine Timing Sprocket manufacturers and OEM car engine Timing Sprocket factory. We focus on auto engine timing chain kits, including timing chains, tensioners, guides, and gears. Our products are used for auto engine timing system parts. We have two our own manufacturing factory, we also have our own international sales department. we produce and sell all by ourselves. We will reply to you within 12 hours of the working day.

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  • GB/T14212-2003 Certificates
  • JB/T10348-200 Standard
  • GB/T14212-2003 Certificates
  • JB/T10348-200 Standard
  • GB/T14212-2003 Certificates
  • JB/T10348-200 Standard
  • Certificates
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INDUSTRY KNOWLEDGE

How to judge the wear of the timing sprocket? Common fault symptoms and replacement guide

The timing sprocket is the core component of the engine timing system, which is responsible for working with the timing chain or belt to ensure the precise synchronization of the valve and piston. Once worn or damaged, it may cause engine performance degradation or even serious failure.

Judging the wear of the timing sprocket and system failure requires a combination of symptom observation, inspection and technical means. The following is a detailed judgment method, common fault symptoms and replacement guide:

1. Judgment method of timing sprocket wear

Abnormal sound diagnosis
Cold start "clattering" sound: The chain is loose and causes the rail to slap, especially when the car is cold.
High-frequency "squeaking" sound: The sprocket teeth are worn and the chain meshes unsmoothly.
Irregular idling noise: It may be reduced as the speed increases (temporary compensation by the chain tensioner).

Visual inspection
Disassemble and inspect the sprocket teeth: The worn teeth are "hook-shaped" or sharp (compared with the new sprocket).
Chain slack: Use a tool to press the middle of the chain. If the sag exceeds 5mm, be alert.
Guide rail/tensioner status: Check if there are cracks or the tensioner piston cannot return to its position.

Fault code and performance analysis
Some models report P0016/P0017 (crankshaft-camshaft phase mismatch).
Unstable idle speed, weak acceleration (timing deviation causes abnormal valve opening and closing).

Professional tool detection
Oscilloscope detection: Compare the phase difference between the crankshaft and camshaft sensor signals.
Endoscopic inspection: Observe the sprocket status without removing the cover (technical experience required).

2. Common fault symptoms

Difficult to start: Timing misalignment causes abnormal compression ratio.
Engine shaking: Multi-cylinder misfire (timing deviation affects ignition).
Increased fuel consumption: Valve timing errors reduce combustion efficiency.
Fault light on: VVT system error (sprocket wear affects variable timing function).
Metal debris: The oil pan magnetic plug absorbs iron chips from chain wear.

3. Replacement Guide

Replacement Timing
Mileage recommendation: 80,000-120,000 kilometers for ordinary chains, and more than 150,000 kilometers for long-term chains.
Forced replacement signal: The tensioner has been adjusted to the limit, the chain has been stretched by more than 3%, or the sprocket teeth are obviously damaged.

Replacement steps
Preparation
Disconnect the negative terminal of the battery and drain the coolant (some models need to remove the water pump).
Mark the joint position between the timing cover and the cylinder block (to ensure accurate reset of the sealing surface).

Timing alignment
Rotate the crankshaft to the top dead center (TDC) of the 1st cylinder and align the camshaft timing mark (chain color link alignment mark).
Note: VVT models need to use a special tool to lock the camshaft phaser.

Removal and installation
Loosen the tensioner and guide bolts in sequence to avoid sudden loosening of the chain.
New chain needs to be greased (to reduce initial wear).

Key inspection items
Manually rotate the crankshaft 2 circles and recheck the timing mark (confirm that there is no assembly error).
After starting, listen for abnormal noises, use a diagnostic instrument to clear fault codes and check phase data.

Notes
It is recommended to replace the complete set: the chain, sprocket, tensioner, and guide rail must be replaced at the same time (to avoid mismatching of new and old parts).
Oil requirements: Use engine oil that meets the standards after replacement (poor quality engine oil accelerates wear).
Torque specification: The tensioner bolts must be tightened according to the manufacturer's torque (overtightening may cause deformation of the guide rail).

4. Maintenance recommendations

Non-professionals should be careful: incorrect assembly of the timing system may cause the piston to push the valve (interfere with the engine).
Economical alternative: Some models can use improved silent chains (such as INA brand upgrade parts).