cm2350 antifreeze in fuel

[Waterloo]

(11-09-2019 )Yauchout Wrote:  yea im not to sure myself .. the machine-shop claims they can install new ones but i dont want to remove it if it is not the problem the engine only has 490K on it

Like Tree stated, bad move, these heads are scrap, and you are there. If that is where your problem actually is.