Timing Chain Replacement Diagnosis And Repair
Often maintenance neglect, head gasket replacement or related valvetrain issues will require the timing chain to be serviced. If you are replacing the timing chain, you need to look at all the related components. Keep reading for timing chain replacement best practices.
Tech Tip: Timing Chain Tensioner Installation Caution on GM 2.3L Quad 4
Inadequate tension placed on the chain will eventually result in chain breakage and the consequential piston to valve contact.
Tech Tip: Mazda Rattle Noise From Engine Due To Stretched Timing Chain
With the engine warmed up, some vehicles may exhibit a knocking/rattle type noise from the front timing cover and/or valve (cylinder head) cover below 2,000 rpm
Tech Tip: Timing Chain Service on Ford 3.0L Duratec Engines
If you have to remove or replace a cylinder head for any reason, or replace the timing chain on a 3.0L Duratec, it can be a bit of a challenge because Ford doesn’t provide a Top Dead Center (TDC) timing reference mark on the crankshaft. You will have to use a dial indicator to find the TDC position of the number one cylinder on Ford’s 3.0L Duratec to make sure the crank and camshafts are all properly aligned.
Timely Timing Chain Service: ‘Advancing’ Your Position in the Market
Timing chains and gears are engine parts that are usually replaced when an engine is rebuilt or when it has reached a high mileage total. Over time, gear teeth wear and chains stretch. This can cause noise, retarded valve timing (and ignition timing if the engine also has a cam-driven distributor), and a noticeable loss of performance and fuel economy.
VW Tech Tip: Upper Timing Chain Noise on VR6 Engines
To help silence the problem, try bleeding the tensioner. Start by removing the tensioner from the engine. Next, submerge the tensioner in oil. (Make sure the oil feed hole is facing upwards.) Then, use a large pair of non-marring pliers to actuate the piston several times until no air is noticed escaping the bleed hole.
Tech Tip: Tool Needed to Replace Timing Chain-Driven Water Pump
Replacing this water pump requires a special tool to secure the water pump sprocket. Failure to do so could result in misalignment of the engine’s balance shafts or significant engine damage. Remove the water pump access plate from the timing cover and install J 43651 Water Pump Sprocket Holding Tool, or equivalent. Secure tool to the sprocket and front cover and remove the sprocket bolts. Remove the water ….
Tech Tip: Special Timing Chain and Belt Tools
Before you replace a timing belt, chain or gear set on some engines, you will have to look up the timing reference marks. Some engines have multiple timing marks that can cause confusion if you don’t know which ones to use or how to line them up. Many engines also require special tools when changing a timing belt or chain. At the very least, you should have a belt tension gauge to make sure the tension on a timing belt is correct.
ServicingSolutions: Chain Reaction…Timing Chain Replacement on Toyota’s 22R Series Engine
Toyota’s 22R series four-cylinder SOHC engine has survived and thrived in its cars and trucks for nearly 30 years, and is a desired powerplant for its power, torque and reliability. The basic design is a continuation of the engine that preceded it, the 20R, which was used in cars and trucks in the mid 1970s.
Tech Tip: BMW Timing Chain Whining Noise
On E38 750iL models with the M73 engine, a whining noise that is generated by the rotation of the timing chain at approximately 1,000 – 1,500 rpm may be heard at all engine temperatures. The timing chain noise is a normal engine operating noise that is transmitted to the body of the vehicle and into the passenger compartment via the engine, transmission and exhaust system mounts.