Hi there!


I have a serious problem with my engine mount screws (under the chassis) M4x10 #802551

I canīt open two of them. Having them fastened by hand with a Hudy driver and no threadlock a couple of weeks ago, I canīt open two of them with the same driver!
The driver is already broken and the screwheads are badly damaged by now. Here are my questions:

How could this happen? Is the heat of the engine seizing the screws in the chassis?

What can I do to prevent this from happening in the future?

And the most important question, how can I get those screws out?
Drilling? Cut a groove in the head and use a flathead screwdriver? Weld another screw or tool to the heads?

What has worked for you?


Andy advice would be appreciated...