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Old 07 August 2011, 08:28   #41
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Another thought - have you checked if the throttle cable is actually pulling the the throttle lever on the engine to the fully open position? - the adjustment might be off/slipped...
...yes, checked this while flushing through last Saturday bud...
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Old 07 August 2011, 09:47   #42
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I would invest in either a permanent tacho (Tinytach) or a handheld tacho as per this thread:

http://www.rib.net/forum/f36/install...ine-43254.html

That way you will know if you are hitting top revs, which should help the diagnosis.

Cheers

Chris
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Old 07 August 2011, 10:45   #43
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Originally Posted by chris123 View Post
I would invest in either a permanent tacho (Tinytach) or a handheld tacho as per this thread:

http://www.rib.net/forum/f36/install...ine-43254.html

That way you will know if you are hitting top revs, which should help the diagnosis.

Cheers

Chris
...Thanks mate...I'll take this advice... any idea what max revs is on a mid 80s mariner w15?
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Old 07 August 2011, 13:07   #44
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Don't you have a camcorder or something so you can put a vid up on youtube? I'm sure many people in here would recognize the error if they see and hear.
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Old 07 August 2011, 21:33   #45
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>>>any idea what max revs is on a mid 80s mariner w15?

A photo or serial no. would confirm but I wonder if your W15 might be late 70s? Anyway I have it covered in a Mariner workshop manual. Full throttle is 4500-5500rpm. Plugs are NGK B7HS (there may be a more modern variant though). Idle speed is 1100-1200rpm in forward gear.
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Old 07 August 2011, 23:49   #46
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OK, will try to get some camcorder footage off my phone to post (another challenge no doubt) by next weekend boys!... will also give you a wave if I master it!

... will also post serial number..

*thinks it may turn out to be from the 1880's*

:-)
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Old 15 August 2011, 20:22   #47
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RIGHT GUYS...
I have had the same starting problems and reduced power... so took plugs out and checked them..one not sparking at all!
Switched plugs and proved the plugs were OK themselves... so thought it was the solenoid for the second plug. Then switched round and found both units worked when switched.
So looks like acors electrical problem (wires feeding solenoid)
I hoping to find a competent electro-savvy marine engineer over here (boat in Mallorca).

I hopeful I may be getting to the root of this now... so does this all sound sensible to you guys in the know?

Once again gracias for all advice given (and yet to be recieved!)
Thanks!
Ferryden
(PS Will post on Engines section too in hope of feedback)
(PPS on remote internet cafe over here so will log on tomorrow to check out your feedback... dont think Ive buggered off! )
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Old 16 August 2011, 16:21   #48
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Have now transported the engine (not easy with no car here!) into a marine workshop for them to look at electrics... hope I can get this sorted before I have to bloody leave!
:-)
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Old 17 August 2011, 11:52   #49
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Hello Ferryden

I have the same set up - Mariner 15hp 2 stroke and a Quicksilver 340 Airdeck and believe me it will get on the plane very easily, so yours should.

It may be worth trying to borrow another engine and see how that performs on your boat. This could save a load of hassle.

I have NEVER used a pressure gauge on my tubes. I blow the tubes up until they are solid then I do the airdeck until I can put no more air into it and then I do the keel likewise.

I suspect that there is not much wrong here and would strongly recommend borrowing another engine for a short try out.

Keith Hart
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Old 17 August 2011, 13:50   #50
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Hello Ferryden

I have the same set up - Mariner 15hp 2 stroke and a Quicksilver 340 Airdeck and believe me it will get on the plane very easily, so yours should.

It may be worth trying to borrow another engine and see how that performs on your boat. This could save a load of hassle.

I have NEVER used a pressure gauge on my tubes. I blow the tubes up until they are solid then I do the airdeck until I can put no more air into it and then I do the keel likewise.

I suspect that there is not much wrong here and would strongly recommend borrowing another engine for a short try out.

Keith Hart
Thanks Keith... on the Engines section some of the lads have assisted and are confirming that there is an ignition problem...itīs now in the workshop...pretty peed off as my local marine was paid to look at it and get it in decent order before I shipped it overseas...
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Old 18 August 2011, 13:23   #51
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Well I found out the problem... the engine was screwed beyond repair...
Needs a new one...gulp!

I just wanted to thank everyone that tried to help me here...really great responses..

..think I may have a BIG drink tonight!

;-)

Ferryden
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Old 20 August 2011, 13:26   #52
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Sorry to hear that. Have you spoken to the people who charged you Ģ200.00 to service it?

I see you are a member of the 'Midlands Navy'.

Keith Hart
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Old 20 August 2011, 13:47   #53
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Sorry to hear that. Have you spoken to the people who charged you Ģ200.00 to service it?

I see you are a member of the 'Midlands Navy'.

Keith Hart
Hi Keith... yes, I have that as a priorty on my to do list when I get back!

Cheers bud!
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