Should I add a comma in between 2 clauses to make it grammatically right?

commas

Here are my examples

I would not wait but find the problem and fix it

I would not wait, but find the problem and fix it

Which one is correct?


I think a dash or a colon is required. A comma is not strong enough as the clauses are quite separate. I would not wait**:** I would find the problem and fix it

I would not wait - I would find the problem and fix it

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