Recently when I started shifting into 4th gear. It's making this grinding noise. I'm pushing the clutch all the way down so I don't understand why it sounds like that. Help

 

do you have enough fluid in your master cylinder? if you do can you see any signs of leaking around the master? also if you say pump the clutch twice then try and put it in will it stop? if it does then either your master cylinder is leaking our your slave....

 

Yes, I agree, also, if nothing is leaking, try bleeding the clutch line.