1985 Century Meridien twin Merc 190's

[slosacco]

I acquired this with no boating knowledge.... but mechanically inclined. The engines haven't started in seven years, I need all the help I can get. I pulled all the plugs and poured Marvel Mystery oil in them and cleaned everything. What's the chances the engines will turn???? What else should I do to prevent more damage.

 

[crazy charlie]

Re: 1985 Century Meridien twin Merc 190's

I would pour some mmo in the valve cover and in the carb and wait a few days before you crank.I would crank with the plugs out.Charlie

 

[wire2]

Re: 1985 Century Meridien twin Merc 190's

Depends if they were fogged, gas drained, etc. and storage atmosphere. High humidity could mean trouble.

Simplest thing now is put a socket wrench on the crank nut and turn.

 

[slosacco]

Re: 1985 Century Meridien twin Merc 190's

Pour it right in the top of the carb??? How much should I do?

 

[Haut Medoc]

Re: 1985 Century Meridien twin Merc 190's

Curious, how many cylinders per engine?.....​

 

[slosacco]

Re: 1985 Century Meridien twin Merc 190's

4 cylinder engines

 

[Haut Medoc]

Re: 1985 Century Meridien twin Merc 190's

Oh my........Twin 470's......
Since you have the plugs out & the MMO in, I would see if they will spin like wire2 says.....
If they will ground the coil & spin 'em with the starter a bit to get some oil up to the bearings.....
One thing for sure is the gas in the tank is not good, I would get a gallon can filled with new gas & plumb it in temporarily while you try to reanimate the engines.....
Change the water separating fuel filters, ISE......​

 

[wire2]

Re: 1985 Century Meridien twin Merc 190's

Oh my........Twin 470's......
​

Haut, are you suggesting that "Double Trouble" would be an apt name on the back of this boat?​

 

[slosacco]

Re: 1985 Century Meridien twin Merc 190's

OK.... Today I installed a battery and was also able to spin the pulley manually, but not with ease at first and it got easier the more I did it, the MMO shot-up out of the pistons. After that I tried to turn the engine with the key and I just got a click, i see the selenoid on the starter is working but not turning the engine. Any advise...... I tapped on the starter to loosen it also.

 

[Bondo]

Re: 1985 Century Meridien twin Merc 190's

i see the selenoid on the starter is working but not turning the engine. Any advise...... I tapped on the starter to loosen it also.

Ayuh,.........

Pull the Starter,+ Bench Test it.........

 

[wire2]

Re: 1985 Century Meridien twin Merc 190's

The click could be just the aux solenoid, not the starter one. You can jumper the starter with a big screwdriver between the 2 large studs. If that turns the engine, you have a start circuit fault.

 

[Don S]

Re: 1985 Century Meridien twin Merc 190's

Try this.

http://forums.iboats.com/showthread.php?t=167035

 

[slosacco]

Re: 1985 Century Meridien twin Merc 190's

Thanks..... I will pull the starter. Very nice write-up Don