no power 200 johnson in water

[steelrod47]

The magnets on the flywheel on 89' 200 johnson j200txcea came loose,I had them put back and the motor started w/one turn of key. Took boat out ran like a champ for 15-20 mins then lost power,would only go 5 mls an hr. no matter how much gas I gave it. It ran great in neutral and in gear in my driveway. On the way back I heard the motor trying to go then all of a sudden it took off like a champ again then 5 min later lost power again..I don't think it's gas cause I used two separate tanks.. This happened last year but after finding the magnets loose I figured that was the problem. Someone said timing but why would it stop and then go? Up for suggestions anyone!

 

[boobie]

Re: no power 200 johnson in water

When the prob happens pull one spark plug wire off at a time and see if you can find a cyl that is not firing either to lack of spark or fuel.

 

[steelrod47]

135 mercy outboard runs great when going slow as soon as I give it gas it starts to knock until I give it full throttle then it stops. I can then back down the throttle with no more banging. It only happens when I start from a still position whether it's hot or cold. Lower unit oil good,no metal on lower bolt magnet. It runs great at low or high speed,only bangs in between.

 

[oldboat1]

These motors need a constant 50:1 mix fuel to oil ratio if premixing. If not premixing, need to be sure the oiling is working consistently (make sure the reservoir is full to begin with).

 

[Tassie 1]

2 posts on 2 different brand of motors ~ 7yrs apart??
why not just start a new thread about the merc?

it baffles people...