1989 70hp johnson starting problem

[kvernon6]

i have a 1989 johnson 70 hp that has some trouble starting.it takes about 3 min to get it cranked and running.sometimes when i first try to crank it will fire up for about 5-10 seconds then cut off.then when i hit the starter again it sounds like the starter is not engaging the flywheel.

 

[Javelin 353]

Re: 1989 70hp johnson starting problem

I have a 1991 70 Please describe your entire starting process and we can see what is going on there is lots of great help here. Where are you in NC I live near Raliegh

 

[fireman57]

Re: 1989 70hp johnson starting problem

Take the cover off and see if it is engaging or not. You poor starting could be a dirty carb, choke not working properly, weak spark, bad gas....the list goes on. When was the last time that you put in a carb kit? Have you done a spark test? What is your compression. These are the things that the experts will want to know.

 

[kvernon6]

Re: 1989 70hp johnson starting problem

i bought the boat about three years ago.at that time i drained all the gas out and put fresh gas in.i also changed all three plugs with ngk plugs.and i put a can of sea foam in every tank of gas that i put in the boat.i have never done a spark test or a comp test and have never cleaned the carbs. and i will take the hood off and check the starter. i am from caswell county nc just north of raleigh.

 

[kvernon6]

Re: 1989 70hp johnson starting problem

as far as my starting process goes.i just turn the key and let it turn over about 2-3 seconds then i push the choke in.after that it fires up for about 5 sec. then cuts off .this process is repeated for 2-4 min until it finally cranks up. and occassionally it sounds like the starter and flywheel are not engaging.

 

[angus63]

Re: 1989 70hp johnson starting problem

You should pump the fuel bulb until it is firm.<br />Turn the key to on position and then push key in for 5 sec or so.<br />Then try to start holding key in.<br />Once it starts release key and you may need to bump the key in once or twice to keep it going.<br />Good luck and let us know how this works for ya

 

[Javelin 353]

Re: 1989 70hp johnson starting problem

GET RIDE OF THOSE NGK PLUGS use the champion in omc motors they will make a big difference cant rember exact plug for that engine .<br />Follow Angus advice it should fire up if you hold the choke in for 5-10 seconds