gas/oil mix

[skip's sis]

Hi. My brother recently purchased a boat that has a johnson outboard motor. he went to the johnson website and entered the specs on his motor. he was informed that that particular motor was built between the years 1977-91. his Johnson (no laughing cuz there is no pun intended ) is a 90hp V4 2stroke engine. is the proper gas/oil mixture 50:1? Also, he has had problems closing the choke once the engine is started...could that be due to the wrong gas/oil mixture or a problem with the choke, or both?

 

[tashasdaddy]

Re: gas/oil mix

we need the model # off the motor. there are some big differences in that wide time frame.

 

[Fromtoronto]

Re: gas/oil mix

I have a 110hp 1989 Johnson Outboard 2 cycle.. its 50:1 You can check the model on the transom bracket outside... its on there pretty good along with the serial # of the motor...

What issue is the choking? I sometimes have to open choke up even when its just finished running and would think its still hot... but no other issues, sometimes stalls when I close it and trying to get to gear or I have to push it in fast, maybe not warmed long enough somtimes... it will burn gas fast also... getting about hour and half of tubing from 20 litres or 5 gallons of mix.

Hi. My brother recently purchased a boat that has a johnson outboard motor. he went to the johnson website and entered the specs on his motor. he was informed that that particular motor was built between the years 1977-91. his Johnson (no laughing cuz there is no pun intended ) is a 90hp V4 2stroke engine. is the proper gas/oil mixture 50:1? Also, he has had problems closing the choke once the engine is started...could that be due to the wrong gas/oil mixture or a problem with the choke, or both?

 

[skip's sis]

Re: gas/oil mix

when my bro opens the choke on a cold motor in order to start, the motor starts right up. he opens it all the way. then when he tries to close it so he can put engine in gear, it always dies when it is almost closed. it gets so close to being closed you can almost taste it. any more ideas?

 

[ftltony]

Re: gas/oil mix

when my bro opens the choke on a cold motor in order to start, the motor starts right up. he opens it all the way. then when he tries to close it so he can put engine in gear, it always dies when it is almost closed. it gets so close to being closed you can almost taste it. any more ideas?

That makes no sense whatsoever!

Are you saying that he has the "throttle" "disengaged" and he is flooring it ????.. because on outboards, you push the key in to choke the motor .... So what you are saying doesn't make sense....

 

[JB]

Re: gas/oil mix

We need the model number to be of much help, sis. We also need to clarify what "open" and "closed" mean in regard to the choke.

 

[skip's sis]

Re: gas/oil mix

picture this. outboard motor on back of boat. cap'n in the cap'n seat. opens choke/throttle. turn key...motor starts. in order to engage motor cap'n must close choke/throttle. engine dies. please keep in mind that this is a 2 stroke motor. on this 59 glaspar cap'n has steering wheel, gear shift and choke/throttle lever...now you decide if its a choke or a throttle or both.

 

[iwombat]

Re: gas/oil mix

That's a throttle lever. I don't believe there ever was a "choke lever" on any remote console. 90hp would put it into the 80s, which means it's probably got a primer solenoid and not a choke anyway.

Gasil is 50:1

Sounds like he's having problems getting the motor down to idle. Not enough info for a diagnosis, but most of the time that's dirty carbs.

 

[skip's sis]

Re: gas/oil mix

ok jb. im on my way to the town where the boat is and i'll stop by and see if i can find a model number.

 

[ftltony]

Re: gas/oil mix

picture this. outboard motor on back of boat. cap'n in the cap'n seat. opens choke/throttle. turn key...motor starts. in order to engage motor cap'n must close choke/throttle. engine dies. please keep in mind that this is a 2 stroke motor. on this 59 glaspar cap'n has steering wheel, gear shift and choke/throttle lever...now you decide if its a choke or a throttle or both.

You are still making ZERO sense!!!!

So picture this.....

To start an outboard motor, sitting in the captains seat, after you have primed the motor by squeezing the ball, you pull the THROTTLE OUT to the RIGHT. Doing this disengages the throttle which will not allow the motor to go into gear if the throttle is pushed forward ( also called "advanced").

TO CHOKE THE MOTOR, you PUSH the key IN. This activates the solenoid which in turn, closes the choke on the motor. You push the key in and turn the key to START and the motor will start.

Depending on how far you have the THROTTLE pushed forward ("advanced") will depend on how high the motor will rev.

NOW, KNOWING that and describing that all to you, What YOU are saying is that after he has the motor started, To get the motor in gear, HE HAS TO PUSH THE KEY IN...?????????????

 

[iwombat]

Re: gas/oil mix

I believe what's sort-of being described is the motor starts in neutral at fast-idle and he can't get it out of neutral fast-idle w/o it dieing.

 

[skip's sis]

Re: gas/oil mix

ok...i got the serial and model #s. serial #J5834908 and the model #J90TLCTE. the following attachments show the following:

This pic shows where the lever is when the motor dies
View attachment 15647

this pic shows the lever completely down/closed
View attachment 15648

this pic shows the only knob that goes in & out...it is the control for the lights both bow and stern
View attachment 15649

this pic shows the "instrument panel"
View attachment 15650

i hope this info will help you to help us.

 

[JB]

Re: gas/oil mix

Sorry, sis. The links don't work.

Go to Non-Boating Tech and read the sticky on posting pix.

Good luck.

 

[tashasdaddy]

Re: gas/oil mix

OK by the model # 90hp 1983 J90TLCT. the controller has the single handle shifter/throttle, the lever is not the choke, it is the fast idle lever, use for starting. you raise the lever, so the motor can warm up, then lower it so it can idle, and it locks in place. then you can shift into gear. it sounds like the idle speed is too low, or you have dirty carborators. the motor needs some maintenance. he needs to get the Johnson service manual for that specific motor, if he is going to work on it himself. the manual is expensive, but at $80.00 + an hour for shop service, it becomes a deal.
http://www.outboardbooks.com/index.cfm?fuseaction=models.main&year=1983&ID=106711

parts diagrams here http://shop2.evinrude.com/ext/index.aspx?s1=bf6ad09c53cead335fcfd8a6471c0f7f