Easy lifehacks

What does a failing flywheel sound like?

What does a failing flywheel sound like?

Loose flywheel or flexplate bolts make a rattling or knocking sound that changes with engine speed. It’s heard behind the engine, where it mounts to the transmission bellhousing. If there’s a rattling or knocking sound after an engine has been removed and replaced, the flywheel or flexplate bolts may be loose.

What happens if a DMF fails?

A fully functioning DMF will offer smooth acceleration with very little or no vibrations at all, depending on your engine. A failing unit won’t react well to low-end torque and will cause excessive shaking and vibrations as you let off the clutch and apply the gas.

Do you need a solid flywheel for a DMF?

The solution would be to fit a stronger, higher performance DMF but the aftermarket industry seems geared up to offer solid ones as the upgrade option. A solid flywheel replacement is often regretted by it’s owner. They cite vibrations and noise as two of the main issues arising from them. Gear changes appear to be required more frequently.

Can you change the DMF at the same time as the clutch?

Most manufacturers recommend changing the DMF at the same time as the clutch. Since clutch replacement usually requires removal of the flywheel it makes sense to do both at the same time. DMF are subject to wear and if the sprung link goes will seriously hamper the smooth running nature of the engine.

Do you need a flywheel in a diesel engine?

They are a relatively new innovation but increasing numbers of manufacturers are fitting them to their cars. In a diesel engine a flywheel is an essential, in smooth petrol engines they are nice to have and noticeable by their absence. A DMF will also protect an engine as well as the gearbox from shock and vibration.

How does a dual mass flywheel work?

Firstly a DMF flywheel or more correctly a dual mass flywheel has two sections which are sprung together. The inner one connects to the engine and the outer one connects to the inner one by means of a flexible sprung connection allowing it to move slightly independently of the inner flywheel.

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Ruth Doyle