Tag fg will not increase fuel price kachikwu

I think there may be a bit of a misunderstanding here!

"Tag FG" is not a phrase that makes sense in the context of fuel prices. "FG" is an abbreviation for "Federal Government", which is the government of Nigeria.

Kachikwu is a name, specifically Ibe Kachikwu, who was the Minister of State for Petroleum Resources in Nigeria from 2015 to 2017.

So, it seems like you may have made a mistake in your sentence. Could you please rephrase or provide more context so I can better understand what you're trying to say?