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Old 12 February 2007, 11:06   #1
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engine muffs too hard

just been to local boat jumble and bought yet another set of muffs as i thought they would be diffrent but no. how do you make them softer so they fit a lot better to the leg ive squeezed the rod to make a closer fit , but the water still keeps blowing past the ends and not a lot into the engine. i dont fancy running engine if theres not enough water going to get inside, cheers andy
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Old 12 February 2007, 11:16   #2
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It could be that the muffs are affected by the cold, in which case they all will do it. Ours does the same thing, but i just hope that the impellor has enough pull to lift the water around the engine. No probs yet! (famous last words...)
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Old 12 February 2007, 11:48   #3
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Originally Posted by avon5.4 View Post
, but the water still keeps blowing past the ends and not a lot into the engine. i dont fancy running engine if theres not enough water going to get inside, cheers andy
They all do it, once the motors running it'll suck all the water it needs, don't rev the motor though, tickover only!
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Old 12 February 2007, 12:24   #4
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Dirk is right; when you attach the muffs and turn on the water, it has to go somewhere, and as the engine is not running, it squirts out from under the skirt. Even with teh motor running, assuming you've got good flow going through the hose, it'll spray out.

As long as your tell-tale is working, it should be OK.

jky
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Old 12 February 2007, 12:31   #5
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Mine sprays water everywhere!

Why not rev it? The water is entering the cooling system under pressure which has to give it more than if it was sucking it up, surely?

Just wondering as mine sometimes splutters a bit at idle and I often rev it to clear it in case a fouled plug (or whatever) makes it harder to start from cold next time, no apparent ill effects, tell tale is strong at all times.
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Old 12 February 2007, 13:25   #6
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I had some muffs that where made of what looked like rubber they worked really well, but they got ninked out of my pickup. the ones we have now are a type of plastic and mine spray water every where. i have drilled both muffs and put a section of pipe in so water comes out of both sides. still not great.
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Old 12 February 2007, 13:30   #7
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Originally Posted by BogMonster View Post

Why not rev it?
A blip is ok, but not sustained high revs, a hose can't supply enough water.
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Old 12 February 2007, 13:31   #8
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Nothing worse than a cold muff, when you want to run your engine.......

Try a little warm water foreplay in the sink, then go and turn it on...

Pete
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Old 12 February 2007, 14:54   #9
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I was waiting for someone to say something like that! tsk tsk
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Old 12 February 2007, 14:55   #10
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Quote:
Originally Posted by Dirk Diggler View Post
A blip is ok, but not sustained high revs, a hose can't supply enough water.
OK - I only blip mine for a couple of seconds anyway. Tell tale shows no signs of weakening though, in fact it gets much stronger with a few revs on. Mind you our mains water here is about 12 bar which I think is a bit above normal spec
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