Coolant Flush

[ric243]

Hi,

I've just hauled an engine out of a 2 year layup, where it has been drained of coolant. It's a cast iron block and there is rust in the coolant channels.

I've attached some pictures, is this particularly bad? I was thinking of dealing with it through an engine flush. Can anyone recommend a product for this? Citric acid perhaps?

Thanks for any help,


Ric243

 

[ric243]

 

[makomark]

It would require much more effort but I'd be inclined to use muriatic acid to free up with rust in the water jacket....Leaving the passages open to the air only accelerated what you have found...

If you go the citric acid route, I'd expect several flush cycles before you see any improvements...heating things up can only help the process.

 

[ric243]

Okay, thanks for the info, appreciate it.