89 Merc 150 V6 ,stuck!

[consie67]

I have a 24' CC w/ twin (CR), 89 Merc 150's. These are low hour, good running motors. Today I was running at 1200-1500 rpm on one engine in 4 ft water on mild trim. Water pumping fine. I lowered & fired up other motor and it was OK for a few mins. and then cut out and would not start. At the dock I found that the the flywheel is stuck solid. Motor has NEW impeller and plenty of oil in the tank & line to pump. Any ideas? I heard no noise at all, she just quit. Thanks, Chris

 

[gss036]

Re: 89 Merc 150 V6 ,stuck!

I think I would pull the spark plugs and see if you can turn it over. Will it go into neutral? If so should have free spin w/plugs out. Try tuning the prop by hand, make sure you have the plugs out so it will not start.

 

[AndyL]

Re: 89 Merc 150 V6 ,stuck!

Put the Kill switch down too so you dont get a HT shock should you be touching a lead accidentally.

 

[consie67]

Re: 89 Merc 150 V6 ,stuck!

Thanks, I will try that but it does go into neutral & the prop turns freely. I cannot move the flywheel by hand in neutral or F & R. I'll take out the plugs & let you know. Thanks, Chris

 

[wilde1j]

Re: 89 Merc 150 V6 ,stuck!

I think I would start by pulling the LU off to determine if the PH or LU is bound up, then proceed from there.

 

[thespearstn]

Re: 89 Merc 150 V6 ,stuck!

if it broke a ring you shouldnt be turning it at all. i done that and ruined my cylinder