Try our new info resource - "Aladdin's Cave" (Main menu)Just added a separate link to Ash's Dropbox thread (shortcut)
I had huge problem with white deposits when I had my carbs cleaned a few years ago. Even when I stripped the carbs over this winter, there was still evidence of the white stuff. It's has all gone now after this winters strip and clean but it was a right pain in the arse.
I would definitely try to remove it. I'm trying copy and paste the link to my thread on it.....
The outcome of the above link was that I got the carbs as clean as I possibly could with petrol and WD040 but, like I said previously, there was still some white residue 3 years later. These are how the bodies cleaned up in the u/s cleaner this time....bootiful (Attachment Link) (Attachment Link) (Attachment Link)
Don't use limescale cleaner, it's an acid, and all acids can damage/discolour alloy parts!