For instance Land Rover models including Range Rover, Range Rover Sport, Discovery, Evoque, Velar, Defender LR4 5.0L or 3.0L models are more susceptible to timing chain-related malfunctions. Some models of the Land Rover have some peculiarities. Note that certain engine noises are considered normal. If left unattended, this may result in internal engine malfunction/damage. The most frequent issue for the Range Rover is abnormal knocking or rattling noises at engine idle speeds. The chain is made from steel, while the belt is made from rubber. A timing chain and a timing belt perform the same function: the major difference is their material. Some range rovers have a timing chain, while others have a timing belt. Do Range Rovers Have Timing Chains or Timing Belts? Timing chains look similar to bicycle chains. The entire movement of the mechanical components of a vehicle is significantly dependent on the timing chain and its precision. It is the timing chain that synchronizes the rotation of the camshaft and the crankshaft, managing the timing to allow the valves to open and close during each cylinder’s motion. The camshaft of the engine is installed above the engine’s cylinder in most modern applications, the camshaft is responsible for the opening and closing of the valves into the cylinder in sync with the motion of the pistons. The engine plays a large role, and every mechanical car engine contains pistons, which are connected to a crankshaft that rotates in an upward or downward motion. Knowing, not just “doing”, that’s the Atlantic Motorcar Center way.Pick-up & Drop-off What Does a Timing Chain Do?įor your vehicle to successfully move forwards and backwards, some mechanisms must be in place. Our team of Service Specialists is here to help, for even the newest autos! (207) 882-9969. Questions, or if we can be of help in any way with service on your Audi, BMW, Mercedes, Mini Cooper or other European (and now Japanese) import, please contact us. This job, when properly done, and regular, proper maintenance followed, this update/repair should last the life of the car.įor more information on AGM batteries and other types of batteries, please call one of our Service Advisors, they can offer valuable information on various types of batteries and which battery works for you.Īt Atlantic Motorcar, we’re all about providing our customers not only Great Service but also Value. We understand that “ An ounce of prevention is worth a pound of cure.” (my mom would be proud I remembered that.), in other words, preventing, or catching problems like these brake lines early, can save you more than just money. Often overlooked, for durability and reliability, it is critically important that all the seals and gaskets associated with this job be replaced when the engine is open and apart, particularly the seals on the VVT arm for the intake camshaft, which has a Variable Valve Timing (VVT) mechanism, and that the arm be inspected for wear or damage. It is important to use all updated parts, in particular not to reuse the tensioner bolts, as new designed bolts have been issued that must be installed. We have developed has released improved metal tensioners, forged roller chains, metal backed timing chain guides which are considerably more durable that the original design. This necessitates removal of the cylinder heads and rebuilding, or replacement of the complete engine assembly. Failure of the chain will cause severe engine damage, as the engine valves are no longer synchronized, allowing them to strike the pistons, causing damage to the valves. The plastic/nylon guide plates on the chain tensioner fail, causing the chain to slip, or come loose and fall into the area between the sprocket and chain, causing timing chain failure. On the early XK8 and XJ8 Jaguar vehicles equipped with the 4.0 and 4.2 liter motor (supposedly was improved on the 4.2 liter engines, but we have seen many of these now failing as well, there is a known flaw in the upper timing chain tensioner. The Check Engine Light is often on, but may not present on all cars. The engine noise may also be accompanied by a rough or uneven engine idle. What happens is that the chain tensioner fails, causing the chain to slip or completely break like you see here, causing damage to the valves.Ī noticeable engine noise while idling or during a cold start can indicate a timing chain tensioner problem. On the early XK8 and XJ8 Jaguar vehicles, there is a known flaw in the upper timing chain tensioner. This is an excellent example of what you do not want to see happen to your Jaguar, you’ll note the broken secondary timing chain, and consequently the damaged engine valves.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |