Why is my keg super foamy????

So, Ive now poured about 10 kegs through my kegerator, and Its been nicely balances, and pouring great. I out a keg of Belgian IPA on tap 3 days ago, and its been pouring SUPER foamy.

I carbed it with 4 oz of corn sugar just like all my other kegs.the beer looks clear in the line when it comes out of the keg, but pours foamy and FAST at proper serving PSI. Is it possibly overcarbonated? It sat for about 4 weeks after priming...any ideas on why this is happening and how I can fix it?

thanks!

How long are your lines? If they are less than 8-10ft, that could be your issue.

Sounds overcarbed to me. I've always used about 2.5 oz of corn sugar per keg.

You could try cleaning your lines too. Maybe you have some crud in there.

I've had mixed results with natural carbonation. Sometimes they overcarb and sometimes they undercarb. I've switched to forced carbing in the kegerator. I've had much better luck.

I have had that issue with a keg. I had hop leaves in the poppet. That keg would foam like crazy.