Zygis

Hi guys,
I could call myself a noob when it comes to engines. Today check vsc light came on with a
loss of power in acceleration. Called in for road assistance and the guy found put its the valve fault, blocking it didn't help but cleaning it, since it was quite blocked, done the trick. Now I've been told to change the vault straight away in next morning. Should I do it or blanking plate is viable as well. As I said I know almost nothing engines, so sorry if this question was bluntly stupid. Thanks for genuine advices
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