Is this a tough task or no? Anything i should know before doing this?

 

Drain all the coolant first. My undersanding is that the knock sensor resides in a seconday block coolant drain hole, so removing the sensor is going to let coolant flow.

 

Pretty easy to get too except for the coolant thing it is easy job.

 

anyone else??

 

Here's a link for a coolant drain procedure (courtesy of Shoebox):

http://csce.uark.edu/~jgbertr/rb/4th....html#radflush

If you click on the "knock sensor" in yellow, it will take you to a picture of it.

Don't know if this helps any. I've removed mine several times (flushing the coolant) and there's nothing to it really. Should be straightforward.