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Old 22-04-2007, 09:48 PM   #1
Ben
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I hate old motors

The boat's been in the water for almost three weeks and hasn't been used as the weather has been awful or the tide was wrong so I couldn't get out of our cove.

Beautiful today, tide was finally right and looking forward to the first real day on the water of the year. Unfortunately, as the throttles were fully opened I heard a metallic pop and the starboard engine decided it had had enough. It re-started but we suddenly had a V5 at best rather than a V6. Went back to our berth on one engine to investigate.

Took the plugs out and all but one looked somewhat oily and dirty. One was caked in black soot. Engine still runs buts not hitting on all 6. The metallic ticking has me a bit concerned too. Any ideas?

By the way, the engines are ancient Evinrude 225s on carbs.
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Old 22-04-2007, 10:08 PM   #2
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Oh dear!

Could be any one of so many things Ben. As you say, the metalic noise is a serious worry.

You'd better prepare yourself for what we boaters do best, part with our hard earned dosh.

JF
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Old 22-04-2007, 10:18 PM   #3
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Whats wrong with 5 pots. My Caravelle runs on 5
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Old 22-04-2007, 10:41 PM   #4
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Oh dear!

Could be any one of so many things
Go on Doc, tell me, tell me the worst. I can take it, I'm a boat salesman.
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Old 22-04-2007, 10:43 PM   #5
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Whats wrong with 5 pots. My Caravelle runs on 5
OK, I'll bite. What's a Caravelle. Hang on, might have just come to me. Is that the VW with the Audi 5 cyl?
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Old 22-04-2007, 11:01 PM   #6
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Quote:
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OK, I'll bite. What's a Caravelle. Hang on, might have just come to me. Is that the VW with the Audi 5 cyl?
You got it. Bloody good oil burners too.
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Old 23-04-2007, 12:58 PM   #7
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I have a V4 lying around, made the same noise (once)

The cause for the poppin' sound wasn't to difficult to find.

sad thing was we weren't even pushing it.....

if somebody wants to buy it
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Old 23-04-2007, 02:37 PM   #8
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Oh well. I'll bite.
Based on the "metallic noise bit", the 1st thing I'd do would be compression test.
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Old 23-04-2007, 02:55 PM   #9
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My sister in law's brother is a marine engineer and will stop by one evening later on this week. I'll make sure he does a compression test.


When I looked at the engine yesterday I didn't see any physical damage to the block but who knows. Will update later in the week with pics and damage report.

Oh joy!
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Old 26-04-2007, 01:57 AM   #10
Ben
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No pics but the engineer popped the head off the offending block and one of the pistons made the most interesting sounds as he manipulated the flywheel. Same metallic sound that I heard when it went bad.

He's looking into a remanufactured powerhead. Well what did I expect. In engine (dog) years, they are even older than me!
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Old 26-04-2007, 04:44 AM   #11
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I'm sure there is an old evenrude 225 sitting on the back of a ring 21 up here (used to be a ski race boat)... it's been lying since noah took the animals into the ark!... if you like I could make some enquiries if it would be any help
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Old 26-04-2007, 02:50 PM   #12
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Thanks Parahandy. I'll keep that in mind but I will wait to see what my engineer has to say.
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Old 07-06-2007, 01:21 AM   #13
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One remanufactured powerhead later - it lives!

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Old 07-06-2007, 11:07 AM   #14
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Cool!

Lookin gooooood
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