View Full Version : Need Marine mechanic advice

07-06-2009, 04:13 PM
Ok, so like as if the black cloud over my head could possibly get bigger..... Well, it did.

I was driving my boat at camp and all of a sudden I heard a loud bang and the motor stopped. At first I figured a bottom end problem, but it appears all is ok there. The motor will not start, although does not appear to be seized as when the key is turned, it will turn over, but slowly. There are no strange sounds when it does this but obviously something is wrong.

So, any "informative" advice? It is a mid 80s, Johnson50hp outboard. I'd appreciate some help.


07-06-2009, 07:13 PM
Oh crap! when did that happen?

Number 2 son, thinks perhaps you blew a bearing on the crank shaft, or you threw a ring?

Husband said its the piston return spring! :wink:

07-06-2009, 08:54 PM
Call Darwin at 946-1234 he works from home and is a marine mechanic

On a side note check the horn belt

07-07-2009, 08:27 AM
Ya, I figure a thrown rod, I know Darwin, thought of him. He does great work.

Either way...I see this one is gonna cost......

Oh ya, horn belt all in check....LOL

Happened on Sunday afternoon Ma..... Like the bike issue was not enough.

07-07-2009, 08:58 AM
Timing chain?

07-07-2009, 09:10 AM
You know, someone else suggested that too. Would there be a loud 'bang' then?

Jack Butler
07-07-2009, 01:09 PM
80's outboards are 2 cycle...no valves, no timing chain.
Do a compression test!
What does it sound like when it turns over?

07-07-2009, 03:32 PM
ok, I'll give it a try.