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Chuck Westcott · 01-01-2012, 09:33 AM

Onan makes a carbon remover in a spray can I believe. I remember removing the heads on a 4.0 and scraping the carbon off. Ran like new.That was a pain for sure.

01-01-2012, 09:33 AM	#2
Chuck Westcott Member Join Date: Dec 2003 Location: Brownsburg,Indiana Posts: 326 Likes: 0 Liked 0 Times in 0 Posts	Re: Onan Generator Carbon Knock Onan makes a carbon remover in a spray can I believe. I remember removing the heads on a 4.0 and scraping the carbon off. Ran like new.That was a pain for sure. __________________ Chuck Westcott- S/C -S/G 225