Audi Porsche VW Engine Timing Chain Tensioner - IWIS 70004889

Product Information

An engine timing chain guide is a crucial component in an engine that works alongside the timing chain. Its primary role is to guide and maintain proper alignment of the timing chain as it synchronizes the rotation of the crank and camshaft. This synchronization is essential for the precise timing of the engine's valves, allowing the intake and exhaust valves to open and close at the correct intervals. The guide ensures that the timing chain follows the correct path around the sprockets of the crankshaft and camshafts, preventing misalignment. It helps minimize excessive movement or vibration of the timing chain, which can occur during engine operation. Timing chain guides work in conjunction with the timing chain tensioner to maintain the correct tension in the chain. Proper tension is critical to prevent chain slack, which can affect engine performance or lead to damage.

• Rattling or Clattering Noise: One of the most common signs of a failing timing chain guide is a rattling or clattering noise from the engine, especially when starting the car or idling. The noise is caused by a loose or misaligned timing chain hitting or rubbing against other engine components due to a worn or broken guide
• Engine Misfires: A worn or damaged timing chain guide can cause the timing chain to slip, leading to improper timing between the crankshaft and camshaft(s). This can result in engine misfires, where the fuel-air mixture in the cylinders is not ignited at the correct time
• Engine Stalling or Hard Starting: If the timing chain guide is severely worn or broken, the timing chain may slip enough to cause the engine to stall. You may also have difficulty starting the engine, as the chain is no longer properly aligning the timing of the camshafts and crankshaft

About Iwis

Iwis was founded in 1916 by Bavarian businessman Johann Baptist to manufacture chains for two-wheeled vehicles, but by 1939 Iwis was making the precision chain solutions for engine and drive systems for companies like BMW and Skoda. Today Iwis is headquareted out of Munich, Germany with a workforce over 1150. The Iwis goal is "100% repeatability across 30 million parts manufactured each day" meaning their manufacturing process goal is perfection across every link they manufacture, be it the first or 30,000,000th link. With attention to detail like that it is no wonder Iwis is a worldwide leader in high-quality chain solutions.