What happens if timing belt tensioner fails?
When a timing belt tensioner fails, it loses tension. As a result, the timing belt becomes loose and the valve timing can be thrown off. This leads to engine performance issues. So if any suspicion arises that the timing belt tensioner has failed, it’s important to check the tensioner and replace it if necessary.
Can you just replace the timing belt tensioner?
When the timing belt is replaced, other parts, including the tensioner, should be replaced at the same time. This is because these components wear out at essentially the same rate as the belt. For instance, the tensioner bearings could dry out or even seize.
How much does it cost to replace a timing belt tensioner?
Timing Belt Tensioner Replacement Cost – RepairPal Estimate. Labor costs are estimated between $257 and $325 while parts are priced between $88 and $108. This range does not include taxes and fees, and does not factor in your specific vehicle or unique location. Related repairs may also be needed.
What are the symptoms of a bad timing belt tensioner?
When a timing belt tensioner fails, it can result in a number of different symptoms.
- Symptom 1: Squealing, rattling, or chirping.
- Symptom 2: Knocking or slapping.
- Symptom 3: Check engine light illuminated.
- Materials Needed.
- Step 1: Park your vehicle and turn off the engine.
How do you change the timing belt on a Mazda?
6) Support the engine and remove the right-side engine mount. 7) Before you go any further, confirm that your timing marks are in the correct location. 8) Using an Allen wrench, turn the tensioner clockwise to permit removal of the timing belt tensioner spring from its pin on the block.
When did Mazda make the move to timing chains?
Mazda made the move to timing chains in the mid-2000s, and since we won’t get into the nuts and bolts of chain replacement, you would be better served referring to your service information. I’m always saying to check your service info before you dig into an unfamiliar job. It is never more important than it is in this case.
What should Mazda TSB 01-012 / 12 do?
Mazda TSB #01-012/12 covers the diagnostics and procedures well; the problem is the lock pin on the actuator is damaged, allowing uncontrolled movement of the components. The TSB covers how to replace the actuator pulley without replacing the timing chain and refers you to the service manual if the chain needs to be replaced.
How does a free running Mazda engine work?
A free-running engine is designed with enough clearance between the pistons and valves to allow the crankshaft to rotate (pistons still moving) while the camshaft stays in one position (several valves fully open). If this condition occurs normally, no internal engine damage will result.