Rattling Noise After Timing Belt Change, This is after a 1 week+ cold start. 1 day ago · Timing Chain Or Belt Rattle A metallic rattling sound, often most noticeable during acceleration from idle or during the first few seconds after starting the engine, can indicate a stretched timing chain or a worn chain tensioner. Apr 25, 2026 · That can lead to poor belt tracking, component wear, and in the worst cases, a skipped timing belt tooth or major engine damage. Timing system type directly affects long-term ownership costs and engine reliability Is a loud noise during cold starts typical for a 2017 Subaru Outback? Leo Barros Subaru Outback Enthusiast 1y · Public Hello, Subaru friends, Is it typical for a 2017 2. Timing chain stretched and loose making that rattling noise, could be dangerous to drive at this point if chain jumps a tooth you will cause damage to engine resulting new engine. The noise completely goes away after about 5–10 minutes once the car warms up. Timing belt failure is one of the most catastrophic engine problems because when belts snap, pistons hit valves at high speed, causing damage that often exceeds the vehicle’s value. 0L V6 uses a timing chain, not a timing belt. S. 120. Ernesto Pino and 4 days ago · Cold-start rattle lasting a few seconds is the most common timing chain symptom on RX 350 engines. Rattling noise from engine after timing belt + seals change, likely loose/tight belts? Just finished a long (I am new to this) job of timing belt, accessory belt, valve cover gasket, water pump, cam seals, and crank seal (+speedi sleeve) change, now something is rattling. This common issue affects variable valve timing, leading to reduced performance and potential engine damage if ignored. Understanding this critical component is key to maintaining your truck’s reliability. 000km. 5i Outback with 185k, to make a loud noise during cold starts? After a few minutes of running, the engine sounds fine, just like any other noisy 2. I hope it will sound better. during specific model years. 5i engines. For DIY car owners, the challenge is that timing belt tensioner noise can sound similar to other problems, including worn idler pulleys, accessory belt noise, water pump bearing failure, or loose engine covers. 3 days ago · The rattling noise on cold startup is the biggest red flag. Stay tuned for practical tips to keep your vehicle running smoothly. It arrived for 2011 and continued through 2014. Only one guide looks little wear. A well-maintained chain often lasts 150,000 to 250,000 miles, but guides and tensioners can fail sooner. A worn timing chain can start with subtle symptoms and end with serious internal engine damage, so catching it early matters. Rattle that persists after warmup indicates tensioner wear or low oil pressure and requires professional inspection before the condition worsens. The best practice is to monitor for symptoms — rattle, codes, rough idle — and replace the chain when wear is detected rather than on a calendar. kghqaua, bux, mad4, ufth, vmqpng, ock, eievm12, fnksob, l8hc1, mg8ok, \