Problem trying to find out what typ of engine is in this boat

Ed T

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Aug 12, 2010
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Hi ever one. I have a problem. A friend of mine ask me too look at this boat they pick up his dad and him. The boat is a 1985 Bayliner 22ft cuddy cabin. It has a volvo penta outdrive on it. But the engine I just don't know ?. It does not look like a volvo penta engine. It don't even say it on the top of the cover. And the only numbers on it are eather MO6254RB or MD6254RB. Also found these numbers 909451. The engine is a 4cyl what looks like a single barrel carb. That says on it rockchester. I am not very familiar with volvo penta engines. I do know what there out drive and most of there engines look like but this don't look like one. The engine is blue in color. It looks more like a chevy. Maybe ford.? Also why I need to know is the engine runs great as long as you run a wire from the coil to the battery. Its a purple wire. But if you try started it from the key switch it starts up but won't stay runing. There is 3 wires on the coil. and one is a purple wire about 2ft with a eyelite at the end and it is not attach to nothing. But when they put it direct on the battery the engine runs fine.? So I can't even begin any thing untill I know what typ engine it has. And then I can look up the wire dirgram on it. So Please if anyone can help please do. Like I said 1985 bayliner 22ft cuddy. Volvo penta outdrive 4cyl engine which its color is blue. Numbers on motor I have found are MO6254RB or MD6254RB. Other numbers are 909451. My email is EDIT If any one can help Please do Thank You all so much Ed
 
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Don S

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62,321
Re: Problem trying to find out what typ of engine is in this boat

Post some pictures of your engine. Volvo didn't use any 4 cyl engines with Rochester carbs on them, only the Solex carb.
Being an 85, you could have the possibility of several engines.
 

Ed T

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Aug 12, 2010
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Re: Problem trying to find out what typ of engine is in this boat

OK Going to post some as soon as I get them Thanks
 

Ed T

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Re: Problem trying to find out what typ of engine is in this boat

Hi I was given the wrong info. I went and look at the engine took pictures but the site won't let me downloal. Says File too big. Anyway Its a OMC engine. 1985 4cyl. Now there is 2 puple wires off the coil one is attach to a harness, The other is just dangling there its puple too. Now i am thinking does it run to a soleniod. There is one there with a red wire and a black. And also it has a yellow and black on a smaller bolt and nut. Would the puple wire go there. Would anyone have a wireing diagram for this engine. What happens is turn the key and the engine turns but don't fire. But if you take that puple wire and attach it to the + side of the battery the engine runs fine. So that little puple wire goes were. Can anyone help. Thank You Ed
 

Ed T

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Aug 12, 2010
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23
Re: Problem trying to find out what typ of engine is in this boat

 

Ed T

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Aug 12, 2010
Messages
23
Re: Problem trying to find out what typ of engine is in this boat

The picture above is showing the coil and the purple wire. I am guessing that has something to do with the engine not runing but if that wire is placed on the + side of the battery. The engine will run great. There is what looks like a solenoid with battery wires and a yellow wire would that purple wire hanging there go to that were the yellow wire is. Does anyone know were to get a wireing diagram on line. I am doing this like I said for a friend. Motor is a OMC 4cyl. Guessing a 2.5l 1985 Anyone Help! Thanks Ed
 

Don S

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Aug 31, 2004
Messages
62,321
Re: Problem trying to find out what typ of engine is in this boat

Your picture doesn't show up, you have to use the procedure I gave you a link to.
 

Ed T

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Aug 12, 2010
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Re: Problem trying to find out what typ of engine is in this boat

Did excite what it said to download picture still won't. Will try again tomorrow. Thank You
 
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