1985 125 force overheating

[1985_bayliner]

hey im steve new to boat forums just picked up a 1985 19' bayliner i got it for a steal.

so heres the only problem the person i bought it from says the engine was overheating and now will not start.


i just need ideas to start with im going to pick up a new babttery this week and start..

the only advise i got so far is it could be the impeller

 

[pnwboat]

Re: 1985 125 force overheating

I would be concerned that the motor over heated and did some serious internal damage that it won't start or run. Do the basics first. Check compression, spark and fuel delivery.

Overheating is commonly caused by a bad impeller, but it also can be due to blown head gasket, fuel mixture too lean, clogged water jacket passages.

Since this is a new motor to you, the compression readings are important as they will give you a general idea as to what shape the rings and cylinders are in. If the readings are really low, it may mean you need bore the cylinders and replace the pistons and rings. This is not uncommon to have to do to a motor that has over heated.

May not be worth spending the money on an impeller only to find out you have to spend hundreds of dollars on new pistons and rings.

 

[jerryjerry05]

Re: 1985 125 force overheating

If it overheated the impeller is probably part of the problem.
Start with a compression and a spark test.Sometimes when they get hot they loose compression.If those are ok then change the impeller.J

 

[1985_bayliner]

Re: 1985 125 force overheating

yeah thanks guys ima look into the compression on it and i might just change the pluggs for H of it and hopefully its a easy fix so i can take her out lol