Perkins 4108 heat exchanger/ header tank and demons therein
Now as some of you already know I am stupid.
So be gentle with me - what does this mean?
I have a Perkins 4108.
It was drained of cooling fluid, awaiting a speed flush once the boat is back in the water (yes I know it's late!).
As the boat has been inactive for some time (I bought her in Jan) I thought that I should inspect/change the raw water impeller - Which is a Jabsco pump type thing.
I was intrigued, when removing the pump face plate, the the water which escaped did not smell like stale sea water - more like vinegar, a solution of which I had added to the header tank a few days ago to soften up the calcification- Which I thought I had flushed out though the cylinder block drain. So over to the sink, quick cup of water poured into the header tank and whoosh more water flowing through the pump housing.
I reapeated this - just to check that I was not mad - yes there was more water - no this is not a good mental health indicator.
Now I think this means that the stack has corroded through, thus fresh water is going straight into the raw water system.
Before I attempt to remove anything - bearing in mind that most of it is welded in situ with what appear to be rusty nails, (I'd rather strip this next season rather than lose this one) does any one have any wisdom to share.
So a quick plea to the initiated - Any suggestions however off the wall would be greatly appreciated.
if you are not living on the edge, you're taking up too much room