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Old 31-10-2015, 03:06   #1
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Leaks & now more Leaks

Hi

Since that forever service I recently had in PIttwater, I am starting to get leaks now from various hoses.

Today I attempted to fix the leak on this, so replaced the old black cracking hose and clamps. With new ones, cleaned the metal ends put it all back to gether and now it is bucking in. It turns into jets of water for them join when I increase the RPM to cruise.

I have pulled it apart and put it back together three times without any success.

Any ideas?? The motor is a YAMAHA ME360 diesel salt water cooled.
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Old 31-10-2015, 03:43   #2
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Re: Leaks & now more Leaks

Exhast elbow clogged.


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Old 31-10-2015, 06:14   #3
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Re: Leaks & now more Leaks

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Originally Posted by sailormed View Post
Exhast elbow clogged.


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Hi sailormed

There is good water coming out the exhaust having said that, it is is exploring. As the pressure seems to be high in the hose. The old black ones were bulging a bit before I replaced them. Thank you.

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Old 31-10-2015, 10:15   #4
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Re: Leaks & now more Leaks

Wrong kind of hose?

Spiral cannot be sealed easily.

Don't know on the other one.
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Old 31-10-2015, 10:38   #5
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Re: Leaks & now more Leaks

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Wrong kind of hose?

Spiral cannot be sealed easily.
Yup. Wrong hose for engine work, not bad for lower pressure boat fresh water drinking/faucet use.

I use black wire hose on all engine work, and use Lanocote inside the ends to help seal and be easy to remove when the time comes.
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Old 31-10-2015, 10:39   #6
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Re: Leaks & now more Leaks

You are talking about the clear plastic hose and the T? I would avoid using that hose on the engine.
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Old 31-10-2015, 11:14   #7
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Re: Leaks & now more Leaks

The only place I use that type of hose is between the AC pump and the AC since it is low pressure. Elsewhere on the engine its wire reinforced Trident hose. A PITA to work with but it takes the temp and pressure.


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Old 31-10-2015, 14:09   #8
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Re: Leaks & now more Leaks

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Originally Posted by Stu Jackson View Post
Yup. Wrong hose for engine work, not bad for lower pressure boat fresh water drinking/faucet use.

I use black wire hose on all engine work, and use Lanocote inside the ends to help seal and be easy to remove when the time comes.
Hi Stu Jackson

thank you, the Lanocote is a good idea, which product in their range do you use?

Manni
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Old 31-10-2015, 14:20   #9
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Re: Leaks & now more Leaks

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Hi Stu Jackson

thank you, the Lanocote is a good idea, which product in their range do you use?

Manni
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Old 31-10-2015, 14:20   #10
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Re: Leaks & now more Leaks

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You are talking about the clear plastic hose and the T? I would avoid using that hose on the engine.
Hi Cheechako

yes, it is the clear hose. I had black hose on there before which all of a sudden developed a leak and were bulging. The guru at the marine place said I needed this clear hose. But it is starting to sound like that it is not the right one.
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Old 31-10-2015, 16:15   #11
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Re: Leaks & now more Leaks

G'day,
As all ready said the pictured hose is a No-No. Green stripe 4ply rubber hose available from any industrial hose supplier, such as the Purple Pig at Wetherill Park The Yellow pages will see you right.
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Old 31-10-2015, 16:34   #12
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Re: Leaks & now more Leaks

Re hose lubricant - especially water hoses - IME most things work.
Salvia works reasonably well and should be always available.
Common dishwashing detergent used sparingly works well and normally doesn't cause a problem.

However glycerine is the "goto" product in my book. Easily available, very slippery, safe on almost all hose materials and as a bonus, great for the skin.
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Old 31-10-2015, 17:33   #13
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Re: Leaks & now more Leaks

Consider double clamping if you have space.
Does that bronze tee have ridges on it for hose?. Very difficult to get a hose to stay on a smooth spigot.
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Old 31-10-2015, 17:40   #14
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Re: Leaks & now more Leaks

Wrong hose and those short sections will stress the hose leading to premature failure.

You mentioned bulging before. That is a sign of a hose forced to carry a bending load. Better to loop hose with a longer section so that it can avoid being stressed. All hose has a minimum bend radius.

You need to use wire reinforced black hose. Like Trident marine water hose. You need to use good quality all stainless hose clamps. Not those cheap thin auto store clamps.

The clear hose you chose is only designed for luke warm water. Good hose is tough to get on and off for a reason.

Use spit, glycerine or a little detergent when installing. And dont clamp the hose twisted. That also stresses it unduly.

As a rule of thumb any clear hose should never be used on your engine, transmission or hydraulics.

Did you check the condition of the barbs when you replaced the hose? Smooth tube (unbarbed) wont retain any pressurised hose.

Is that a thru hull I spy there with clear hose and a garden fitting? That looks like a disaster waiting to happen. That chain looks like a finger remover too.

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Old 31-10-2015, 18:14   #15
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Re: Leaks & now more Leaks

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Originally Posted by shakey doug View Post
G'day,
As all ready said the pictured hose is a No-No. Green stripe 4ply rubber hose available from any industrial hose supplier, such as the Purple Pig at Wetherill Park The Yellow pages will see you right.
Hey Doug

great advice and they are 100 mtrs up the road from I will be tomorrow, thank you heaps.

Regards

Manni
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