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Old 07 July 2009, 16:30   #1
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Mariner optimax 200 HP Air Lock

Hi all, I have a rib with a 200HP Mariner optimax (2 stroke) 2005.
It has been stood for nearly a year due to other commitments.
I have it on my drive and when I went to start it, it would turn over but not fire up.
On go the jump leads, still nothing.
Pulled out a plug and checked for sparking, plug sparked but well carbon'd up and dry.
The bulb did not really get hard when pumping, that is when I noticed the air bleed valves on the pump and one on the injection manifold on either side, (the air bleed valves are like car tyre valves).
I pressed the middle bit in and air hissed out then a load of fuel, (everywhere in fact; all over me and the garden).
I turned over the engine whilst dad bled the valves (in no particular order). The engine did splutter and nearly started, but then nothing.
I took out all the plugs to check them, they are in a bit of a poor state and need cleaning up, I even managed to snap one!! Fantastic what a great evening I am having!!
The plugs are ngk ir izfr5g, after a quick search I have found some on the net but I will check with my own local supplier 1st before I order.

I noticed the 2 stroke reservoir is empty and from memory it was an issue from when I bought the engine from new, (I had to unscrew the cap whilst the engine was running to allow it to fill up).

The question I am asking is am I missing something?

Thanks in advance for any advice!!

Lee
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Old 07 July 2009, 17:18   #2
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Hi,
Had similar engine, different problems, I'd however try an external fuel source and bleed the "old" fule out, before ripping everything else out.

GL
Matt
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Old 08 July 2009, 02:45   #3
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do not open those schrader valves they are for test gauges only you could hurt yourself 0r cause a fire with petrol swilling around or high air pressure into /through the skin
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Old 08 July 2009, 03:03   #4
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Quote:
Originally Posted by diverdad View Post
Hi all, I have a rib with a 200HP Mariner optimax (2 stroke) 2005.
It has been stood for nearly a year due to other commitments.
I have it on my drive and when I went to start it, it would turn over but not fire up.
On go the jump leads, still nothing.
Pulled out a plug and checked for sparking, plug sparked but well carbon'd up and dry.
The bulb did not really get hard when pumping, that is when I noticed the air bleed valves on the pump and one on the injection manifold on either side, (the air bleed valves are like car tyre valves).
I pressed the middle bit in and air hissed out then a load of fuel, (everywhere in fact; all over me and the garden).
I turned over the engine whilst dad bled the valves (in no particular order). The engine did splutter and nearly started, but then nothing.
I took out all the plugs to check them, they are in a bit of a poor state and need cleaning up, I even managed to snap one!! Fantastic what a great evening I am having!!
The plugs are ngk ir izfr5g, after a quick search I have found some on the net but I will check with my own local supplier 1st before I order.

I noticed the 2 stroke reservoir is empty and from memory it was an issue from when I bought the engine from new, (I had to unscrew the cap whilst the engine was running to allow it to fill up).

The question I am asking is am I missing something?

Thanks in advance for any advice!!

Lee
You may need the oil lines bleeding/priming, you can do a lot of damage playing around in the dark, it cost me under £400.00 pounds for a big service including plugs, impeller etc, and they would prime the 2 st oil too, just an idea
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Old 08 July 2009, 03:49   #5
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Originally Posted by diverdad View Post
I noticed the 2 stroke reservoir is empty
I assume you mean the oil tank? if that's empty the "low level" switch will not allow the engine to run as it needs oil to stop it siezing.

Assuming you have sooked air down the oil pipe due to an empty tank then there is likely also an oil flow switch as well, which will cut the engine to prevent it all siezing upI guess you will probably have to prime the oil line again.
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Old 08 July 2009, 16:44   #6
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Does the high pressure fuel pump run when you switch the ignition on? You should hear it buzz!.
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Old 08 July 2009, 16:50   #7
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Originally Posted by 9D280 View Post
I assume you mean the oil tank? if that's empty the "low level" switch will not allow the engine to run as it needs oil to stop it siezing.

Assuming you have sooked air down the oil pipe due to an empty tank then there is likely also an oil flow switch as well, which will cut the engine to prevent it all siezing upI guess you will probably have to prime the oil line again.
There is no oil flow switch, the Opti uses crank case pressure to pressurize the main oil tank which forces oil upto the header tank on the engine. If you need to bleed it just run the engine (if you get it going!!) with the engine oil tank cap off and run it until the tank overflows then very quickly put the cap on. The oil level will Not stop the engine from starting, it would just put it into guardian mode limiting your rpm. There is an oil level switch on the header tank (engine tank).
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Old 09 July 2009, 08:18   #8
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Marriner 200 HP

Hi all, thanks for the posts so far.
To keep you up to date, I have looked at the posts and I think the 2 stroke oil tank in the front of the engine being empty is the issue.
I managed to snap a spark plug as I was checking them the other night.
I purchased some new ones and was in the process of putting them in.
When I came to the one where the plug snapped the plug was finger tight as soon as I put it in the hole.
I removed it and checked the threads.
There are a couple of shards of thread that are not good.
I am going to purchase a tap to clean it through so it will not cross thread and bugger things up even further!!
I have checked the plug it is 14mm but I am not sure of the pitch, does anyone know what pitch I should be looking for?

I will keep you posted as things progress!

Thanks
Lee
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Old 10 July 2009, 06:48   #9
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Quote:
Originally Posted by diverdad View Post
When I came to the one where the plug snapped the plug was finger tight as soon as I put it in the hole.
I removed it and checked the threads.
There are a couple of shards of thread that are not good.
I am going to purchase a tap to clean it through so it will not cross thread and bugger things up even further!!

Lee
Had this on one of my plugs at the end of last summer - ended up going quite badly wrong so had the head off & 'fixed' properly - last thing you want is a plug coming out at full chat !

See here for the full discussion ........

http://rib.net/forum/showthread.php?...light=timesert

I do have a pack of 4 spare ' iridium' plugs hanging around if you need any more at a cheaper than normal price - dont ask how I ended up with 4 spare on a 6 cyl engine !

Pete
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Old 10 July 2009, 09:18   #10
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Cos it was cheaper to buy a box of 10 than 6 individual.
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