Re: Johnson 60 HP 92 Wont start anymore (II)

[Silvertip]

Re: Johnson 60 HP 92 Wont start anymore (II)

If the top two plugs are oily and wet that's a sign of weak spark on those two cylinders. Or the needle and seat in those two carbs are not sealing when the float bowl is full which causes an overly rich mixture. The fuel filter will not remain full while running. That's normal. I doubt its a flywheel key problem. Try changing the plugs. Lastly, please stop using vulgar language. It's not necessary and won't help get your boat started.

 

[tashasdaddy]

Re: Johnson 60 HP 92 Wont start anymore

Re: Johnson 60 HP 92 Wont start anymore

do a compression check. on all 3 cylinders. and post findings.

 

[danje197]

Re: Johnson 60 HP 92 Wont start anymore

Re: Johnson 60 HP 92 Wont start anymore

Thanks for the replys, will try to get a hold of a compression gauge and new plugs a.s.a.p

Did not mean to use "foul" language, its just that i was so agitated to see my lengthy post get verbally destroyed by the spell-checker

/Daniel

 

[tashasdaddy]

Re: Johnson 60 HP 92 Wont start anymore

Re: Johnson 60 HP 92 Wont start anymore

i'd rather try to decipher missed spelled words than use this spell check.

 

[danje197]

Re: Johnson 60 HP 92 Wont start anymore

Re: Johnson 60 HP 92 Wont start anymore

A little update to perhaps shed some new light.
I went down to the harbor today with a new battery and some new insights from this forum. I think iv'e narrowed down the problem a bit but not quite sure yet. Some questions that some of you might be able to answer?

1. Upon trying to start the engine by spraying premixed fuel directly into the carbs it seemed to almost fire up, but then it backfired and the fuse blew. Could that point at something particular ?

2. When i removed the air-can-thingy (dont know the english term) and opened the carburettors a bit i could see some premixed fuel sipping out towards me, is this a sign of flooded carbs or a good thing ?

3. I didn't make it to test for spark-strength before the fuse blew, but how strong of a spark should i be able to observe?, and with a weaker spark will it fail totally to ignite ?

Thanks a bunch!
/Daniel Sweden

 

[tashasdaddy]

Re: Johnson 60 HP 92 Wont start anymore

Re: Johnson 60 HP 92 Wont start anymore

spark should be blueish in color, and jump 1/2 inch (convert to metric) yellow spark is weak. check the top of the flywheel shaft, there is a slot for a key way(woodruff key) this should be line up perfectly, if it is out of line you have sheared the key, and everything is out of time, and trying to start can do more damage. waiting reply.

 

[DJ]

Re: Johnson 60 HP 92 Wont start anymore

Re: Johnson 60 HP 92 Wont start anymore

Triple OMC's can be tricky. I know, I own one and have owned many.

The carb's on your engine need HELP. If you ignore it, you will destroy it.

Your spark plugs ae are telling you a story. The story is that one cylinder is lean (starving, but somewhat normal) and the other two are fat (over eating).

The "triple" won't live, fighting itself.

Get the carb's serviced and adjust them.

You've neglected her and she's biting back. Nothing wrong with her that can't be easily fixed.

 

[danje197]

Re: Johnson 60 HP 92 Wont start anymore

Re: Johnson 60 HP 92 Wont start anymore

spark should be blueish in color, and jump 1/2 inch (convert to metric) yellow spark is weak. check the top of the flywheel shaft, there is a slot for a key way(woodruff key) this should be line up perfectly, if it is out of line you have sheared the key, and everything is out of time, and trying to start can do more damage. waiting reply.

Can i see if the key is sheared without removing the flywheel ?

 

[danje197]

Re: Johnson 60 HP 92 Wont start anymore

Re: Johnson 60 HP 92 Wont start anymore

Triple OMC's can be tricky. I know, I own one and have owned many.

The carb's on your engine need HELP. If you ignore it, you will destroy it.

Your spark plugs ae are telling you a story. The story is that one cylinder is lean (starving, but somewhat normal) and the other two are fat (over eating).

The "triple" won't live, fighting itself.

Get the carb's serviced and adjust them.

You've neglected her and she's biting back. Nothing wrong with her that can't be easily fixed.

Thanks for the reply, yes i feel that probably its time to get the boat out of water and let a real mechanic have a go at it. But you say that the carbs is all bad but without commenting any of the symptoms or my findings, could you specify ?

 

[tashasdaddy]

Re: Re: Johnson 60 HP 92 Wont start anymore (II)

the sheard key is 99% of your problems, it throw everthing off. the key has to be perfectly line up or the timing is off. is see they took your first post out , because of the language. if you r are fairly mechanically inclined, you can remove the flywheel and replace the key yourself. it's really not that hard. especially if you have ever used a gear or wheel puller. i can talk you thru it.

 

[danje197]

Re: Re: Johnson 60 HP 92 Wont start anymore (II)

Thanks for the replys, appreciated!
But one says 99% sheared key, one says its all about the carbs
I'm going to go get the boat out of the water and order parts and tools and hopefully get some issues sorted out. I'll post later and tell you what was wrong and how it worked out.

Bye for now.
/Daniel

 

[danje197]

Re: Re: Johnson 60 HP 92 Wont start anymore (II)

And now iv´e got the engine fixed at the repair-shop and apparently the problem (as usual with OMC, and for the second time on this engine) it was the power-pack that was malfunctioned. It seemes it was not entirely dead but rather timing the sparks bad, making the plugs ignite with reduced strength and at seemingly random times (how this is possible is beyond my knowledge). Anyways, got it replaced and everything is fine and well.

Does anyone now why these power-packs keeps malfunctioning on these engines, did OMC design them to die every now and then to earn a profit on the spare-parts market ?

Thanks for all replys!
/Daniel