When to take timing chain tensioner off Toyota VVTi?
If you notice any knock or rattle on a cold startup or excessive valvetrain noise, or notice any leaking around the valvecover gasket or timing chain tensioner (pretty common on all VVTi engines once you get around 100k miles (160k KM) – be a good idea to pull the valvecover off and take a peek.
When do timing chains need to be replaced?
just spoke to a service adviser at toyota, and he said, more than likely it will never need to be replaced. maybe inspected at 200-250k (km) but thats the beauty of the timing chain vs timing belts. 99% of the time the chain will never be replaced throughout the duration of the car. Timing chains are good for the life of the car.
What causes the timing chain tensioner to fail?
What usually happens is the the timing chain guides wear or the timing chain tensioner fails causing the timing chain to rattle. What causes the timing chain tensioner to fail; from the ones that I have replaced is poor oil change schedules; the tensioner is oil feed and the orfice gets plugged with oil sludge from the lack of oil changes.
Are there any problems with my 2007 Mazda CX 7?
Ask your Mazda dealer. CarComplaints.com Notes: The 2007 Mazda CX-7 has numerous reports filed with the NHTSA about engine & A/C problems. Read more ยป
When do you know to change the timing chain?
A timing chain runs inside the engine, as it needs to be lubricated by the engine oil. A timing belt typically needs to be replaced between 40,000 and 100,000 miles depending on the vehicle and it’s a few hundred dollar repair. A timing chain doesn’t need to be replaced unless there is a problem with it.
Why do you need a variable valve timing chain?
Vehicles that have variable valve timing tend to also have additional actuators and motors that are used to delay or advance the timing on the chain. This helps to optimize the overall engine performance. The timing chain, however, is prone to regular wear and tear. When this happens, the engine may rattle or fail to respond when you accelerate.
What can I do to avoid timing chain problems?
To avoid timing chain problems you should maintain your engine properly and have the engine oil changed at recommended intervals. Using premium quality engine oils and oil filters will also help. Keeping the proper oil level will ensure that the timing chain is always lubricated.
When to replace a variable valve solenoid ( VVT )?
Now that you know what all symptoms indicate variable valve timing solenoid failure, you must also know that it is imperative to replace a faulty VVT solenoid. Once you have diagnosed a problem in the variable valve timing solenoid, it is best that you either get it replace or do it yourself.