+2 on checking the guibo's.
When a guibo is failing it will deform under the centrifugal force exerted by the rotation of the transmission/driveshaft and will not be able to keep the driveshaft centered on the transmission output shaft. That causes vibration in the drive train and possibly the metallic sound depending on how bad the guibo is.
The guibo essentially transfers the load from the transmission to the driveshaft. If there is no load on the guibo (when you raised the car and drove it) then it probably has enough integrity to hold itself together and not produce any symptoms. But once a load is applied (wheels on the ground and transmission engaged) it will be transferred to the guibo causing it to deform.
When you engage the clutch you stop transferring power from the transmission to the driveshaft basically removing the load from the guibo.
Over time the guibo will deteriorate and start coming apart making the vibration and metallic noise more pronounced.
Here's a link to a worn guibo vs a new guibo.
08-08-2019, 04:09 PM
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