Mariner 150 Oil Leak

Andy_Rs600 · 26 March 2006, 01:15

Hey Everyone,

Have a bit of a problem.... Just got the new boat, with our old engine on it(Mariner 150 2-stroke Optimax). Apart from a few outfitting errors, i have one issue. The oil reserve resevoir inside the cowling is leaking oil from around the stopper at the top (pressurised oil system). This is not the first time we've had this problem, and it has been with us on and off through four annual services by different companies. The last people who serviced the engine did the thing up so tight i can't take it off without breaking the plastic, and it still leaks!

Has anyone else encoutered this?
Will sikaflex/silicone bond to HDPE and PVC, and can i use it inside the cowling(heat) i'm thinking of just sealing over the whole lot.

Turbodiesel · 26 March 2006, 11:42

How old is the engine? if its under warrant i would get a complete new oil tank fitted. I have never seen one leak from the cap before and if you have had a new cap and it still leaks maybe the tank is no good?

Andy_Rs600 · 26 March 2006, 18:56

Not under warranty, but only 5 years old. Looked at it again today with a magnifying glass and i think the o-ring is fine,b ut the groove it seats in is worn, so oil is leaking around the o-ring. Problem is the quote i had for a new tank is about £160!!!

Alice · 26 March 2006, 19:22

£160 is a bit of a pill to swallow, but I reckon that you'll struggle to seal it. Bathed in oil is a big ask of any sealant. You'd need to take it off and remove every trace of oil in order to start sealing it (assuming you know where it's coming from). Oil everywhere is a P in the A, I'd bite the bullet and replace it.

philip · 27 March 2006, 12:24

Quote:

Originally Posted by Andy_Rs600

Problem is the quote I had for a new tank is about £160!!!

It could be worth having a look here:

http://www.mercruiserparts.com/selec...I+%282%2E5L%29

To find the part No for your RESERVOIR ASSEMBLY

And then ring:

American Marine Imports 01789 491673

I have used them before at the recommendation of Cookee and they were much cheaper for certain items.

Cheers

Phil

Cookee · 27 March 2006, 15:35

Quote:

Originally Posted by philip

I have used them before at the recommendation of Cookee and they were much cheaper for certain items.

Cheers

Phil

Glad I could help!!

Scary Des · 27 March 2006, 15:51

Quote:

Originally Posted by Andy_Rs600

......,but the groove it seats in is worn, so oil is leaking around the o-ring.

you could try an oversized O ring

oversized in cross-section not dia

Des