engine flushing

[ukprometheus]

this may sound like an odd question but is there anything you can add to the water when flushing an engine to help clean the waterways.
i have just had the open the waterways on my newly acquired yamaha and it is clear to see how important it is to flush after using in sea water.

[jyasaki]

Google Salt Away. Or use a weak acid (white vinegar as an additive comes to mind.)

jky

[SPR]

soap powder - my marine engineer recommended..

[jas07]

Anyone know where to get some Salt Away in the UK? Looks quite good!

[ukprometheus]

Originally Posted by SPR

soap powder - my marine engineer recommended..

Really you sure

[ukprometheus]

Originally Posted by SPR

soap powder - my marine engineer recommended..

Is that not going to cause loads of bubbles

[SPR]

soap power - as in washing machine power it's not that bubble - unlike I use a squirt if fairy lol

[jas07]

Never mind this soap... Where can I get my hands on this Salt Away!

[SPR]

the active ingredient I believe is sulphamic acid...

regards

S.

[Rokraider]

On the subject of flushing an engine, presumably the flushing water can only get round the entire coolant system if the thermostat opens.If you are pumping cold water into the engine, presumably the thermostat will stay closed?

[m chappelow]

If you going to use an additive you'd be better to run it up to working tempreture or to get the thermostat open in a tank ,barrel or if on a mooring with a waterproof bag slipped over the leg,
My old man used to flush his through with car antifreeze as long as it had the anti corrosion stuff added ..or domestic heating/radiator additive.

[thomas]

What happens to the hundreds of outboards that never get flushed? I see loads.

I plug the hose onto the back of then engine to flush it as it has a connector, always wondered if it flushed it properly.

[longjohn]

Originally Posted by thomas

What happens to the hundreds of outboards that never get flushed? I see loads.

I plug the hose onto the back of then engine to flush it as it has a connector, always wondered if it flushed it properly.

You'll soon see when you come to replace the impeller - the state of the impeller housing is a good indicator.

[ukprometheus]

Originally Posted by thomas

What happens to the hundreds of outboards that never get flushed? I see loads.

I plug the hose onto the back of then engine to flush it as it has a connector, always wondered if it flushed it properly.

just changed the impeller in my Yamaha and still no water so i opened up the water ways and there was a consideral ammount of salt in there but not completely blocked but im thinking it was enough to causes my issue.
i should have taken pics

[Festinghouse]

some outboards have a fine jet fitted to the end of the telltale - these can be prone to getting blocked by even a small piece of grit or salt. if it has one then flick the end off and have a look.

[longjohn]

Originally Posted by Festinghouse

some outboards have a fine jet fitted to the end of the telltale - these can be prone to getting blocked by even a small piece of grit or salt. if it has one then flick the end off and have a look.

Yep mine (Suzi DF70) has a fine jet for the telltale which is susceptible to blocking so no telltale doesn't necessarily mean no water circulation - but I keep a piece of wire handy to unblock the telltale exit with.

[Carl]

......

http://www.youtube.com/watch?v=RyEfz...ature=youtu.be