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Old 29 August 2007, 07:38   #1
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200 Optimax Compessor Failure

Last weekend I popped out of the harbour to watch the Bournemouth fireworks. On arrival at Bournemouth pier I noticed a rather nasty squeal from the engine.

Popped off the hood and had a look around. The only thing I could find was that the compressor felt a little rough when I turned it over (with the belt slackened) - but still plenty of compression.

Now this is a 2004 Mariner Optimax with 220 hours on it. The 3yr warranty expired 3 months ago.

Plodded home at a sensible pace, she seemed to be running beautifully - apart form the squeal at low RPM / tickover.

Booked it in to my friendly Mariner agent and got a shock on Wednesday!

The back of the piston has a large chunk missing, the bearing on the bottom of the connecting rod has completely self destructed, the bore is gouged and the whole thing is full of very finely ground aluminium powder and bearing bits. The top of the piston though is still in one piece and there was clearly air pressure otherwise I don't suppose it would have run at all.

I have had the thing serviced on time, every time, I always flush with fresh water and I coat the whole block in a thin layer of WD40 from time to time.

I suppose this begs a number of questions:

1. Why would this happen to a 3yr old engine?
2. As the compressor alone is 850 odd from Barrus, does anyone know of an alternate source for such a unit?
3. My engineer is suggesting I replace all the injectors 'cos of all the crud that has got into the fuel system. These are 200 EACH, and there are SIX! Is this really necessary?
4. Is there anything else I should be checking?

Any guidance on this would be greatly appreciated!

Nick
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Old 29 August 2007, 07:45   #2
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That's really sad news!

Have a word with Stuart (Rogue Wave) as I believe he had something similar a few years back with a Mariner Opti 200, think he might even have some spares.
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Old 29 August 2007, 07:58   #3
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If it's 3 months out of warrenty I would make some serious complaints - the problem obviously hasn't happened overnight and has been ongoing. If there was a manufacturing defect you are still covered even years after a warrenty has expired!!!
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Old 29 August 2007, 08:26   #4
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Bummer been there and it hurts

No Spares sorry

The compreesors fail usually it's because the oil feed pipe snaps.

They are made by an Ausie company I believe


AS far as I know the injectors are bosch (similar to beamers ) so you could remove them this is easily done, and run em down to a bosch injector centre and have em cleaned tested.

try puttin an AD on Boats and outboard for an Opti that has siezed or cracked the head

are you covered for mechanical failure on your insurance

I have a buddy in the trade and could probaly get you a trade price on the Oil Pump.
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Old 29 August 2007, 09:53   #5
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This may be of some help ?

http://rib.net/forum/showthread.php?...hlight=optimax

James
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Old 29 August 2007, 10:54   #6
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As Bedajim says have a look at that thread, we removed and refitted all the injectors and it was dead easy too ! Brucato did a great job and were really helpfull and honest .
Do call or pm me if you need any more info.
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Old 29 August 2007, 14:00   #7
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Thanks for your kind comments guys, my engineer is sending pictures to Tim at Barrus tomorrow so I might get at least a contribution. We'll wait and see!

He is also gonna pull off the air pipes to see how far the crud got - too far I suspect.

Good heads up James and Lurcher, that Brucato lot seem to know their stuff.
I wonder if anyone in the UK will do a similar job with the injectors though?

Will let you know how we get on with Barrus tomorrow!

Nick
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Old 29 August 2007, 14:13   #8
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I would have thought most injector specialists would be able to handle them.
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Old 29 August 2007, 15:14   #9
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I use a bosch service centre to clean and flow my injectors it costs around 120 for a set of 6, ask them to do a before and after flow chart, you'll be surprised the difference cleaning makes.
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Old 29 August 2007, 15:24   #10
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LSUK are Bosch agents in the UK

http://www.lsuk.co.uk/workshops/workshops.html

Ive had them recondition diesel injection pumps for me which have fallen apart, not sure what their lads know about petrol stuff, but it cant be that much diffrent

Would say they did a first class job for me and their work was spot on
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