Volvo 2003 Exhaust burnt out.

[mldpt]

I have just learnt the hard way, My engine over heated on passage last week, I soon found out the cause, no sea water getting into the exhaust manifold, fortunatly I read about the problem in Westerly owners mag a day or so before. The cause is due to blocking uip of the water ways into and in the exhaust bend where the water is finaly injected into the exhaust, I removed it and soaked it many kettle full of boiling water, and poked around with a screwdriver, fortunatly I had a spare gasket on board, so was able to reassemble it and all is now well, it did however melt the exhaust pipe, which I have replaced fortunatly the muffler was OK. so apart from an exciting moment or two sailing into Whitehaven lock in the dark pooring rain alls now well again, But I have now fitted a temp gauge to the Elbow. £11.00 from a motor shop, it has a sensor on the end of 3 mtrs wire and a sticky pad on the sensor which I have stuck on the Elbow, it reads 21.5 c when running goes up to 50c when not running and eventually when the engine is cold it goes back to 15 c unfortunatly by the time the engine overheat alarm goes off the damage is done in the exhaust. My engine has done 4000 hrs and I have never had the elbow off, but it was well and truly blocked. It runs considerably cooler now at max revs.
Mike www.pagetsladysailing.co.uk

 

[Guest]

Interesting, I've just had similar symptoms with my Volvo 2002. Water in the engine, impeller and water filter OK but nothing coming out of the exhaust. It cleared when the engine cooled, I'll check this week.

We're sailing down from Clyde marina to Whitehaven next week, weather permitting, boat will be moored there for the year as it's MILES cheaper than anywhere (except Maryport) and we enjoyed our time there last year on our last boat. Maybe see you there if you're still around.

Regards,

Peter
http://www.mistressofmourne.com

 

[mldpt]

HI Peter
Hi Peter.
Re my raw water problems, I am still not happy with mine, I have now got good circulation and its running cooler now but I am having a problem tha t after a rough sailing passage, when I start the engine to enter port, I get no water, if I stop the engine and restart, it OK, possible if I let it run longer the first time it would get going ok, but I am not keen on more expensive exhaust pipe. I have now cleaned out the elbow replaces all the pipes, new impeller and finally I have replaces the insert in the pump. When its running the flow is great, but it takes too long to get it going. Incidently when did you leave Clide marina, I arrived there on 2nd May, having had to sail into Whitehaven marina, due to the water problem, then last week I had to sail into Clyde Marina for the same reason. I have checked the air tight seal in the raw water filter and this seems OK, But will try it without the filter next. Any Ideas, would be received with thanks.