Johnson 115 hp V4 non vro Fuel oil mix

[RNYC Boat]

Any one know what the Feul oil mix is on a 115 HP Johnson Non VRO motor is I think it is 50:1 but My engine will not start. It will turn over If starter fluid is used but will not stay running. Hope it is not the carb. but I bought it and it had set up for at least a year before now,any thoughts would be greatlt appreciated.

 

[ezeke]

Re: Johnson 115 hp V4 non vro Fuel oil mix

The mix is 50:1.

You need to use either full choke or the primer solenoid to cold start the engine (can't tell what you have because you did not say what model or year it is). The engine also needs to be turning at 300 RPM to fire, which takes a fully charged, powerful battery.

 

[kenmyfam]

Re: Johnson 115 hp V4 non vro Fuel oil mix

And starter fluid is a bad idea in my opinion.

 

[RNYC Boat]

Re: Johnson 115 hp V4 non vro Fuel oil mix

1978 Johnson 115 hp, V4, 2-stroke

Note taken on the starter fluid, I have charged the battery to full charge twice and the same issue. The primer bulb never seams to stiffen is one thing I have a question about and from what I have read that could be by passing fuel, but wouldn't there not be any fuel on the plugs if it was by passing?

You think I need to rebuild the primer pump?

 

[iwombat]

Re: Johnson 115 hp V4 non vro Fuel oil mix

If your primer bulb doesn't stiffen it's likely one of three things.

1) float valve not closing (bad float valve or misadjusted float)
2) torn diaphragm in fuel pump.
3) leak in primer solenoid.

 

[RNYC Boat]

Re: Johnson 115 hp V4 non vro Fuel oil mix

Forgive my ignorance Float valve? in the Carb?

 

[ezeke]

Re: Johnson 115 hp V4 non vro Fuel oil mix

Primer bulbs are notorious for bad valves, try holding the bulb with the arrow pointing up while you squeeze. Also, make sure that the arrow on the bulb is pointing towards the engine, not the tank.

You have choke plates in your carburetors that must be 100% fully closed while cranking the engine for a cold start. Use the choke control on your remote, it is either a toggle or you push in the key.

You do not have a primer solenoid unless someone has done a major upgrade on the motor.

 

[RNYC Boat]

Re: Johnson 115 hp V4 non vro Fuel oil mix

Thanks for all your suggestions Admrial I believe you hit the nail on the head with your last post, when I bought the tank fuel line I installed it the way the diagram showed on the line box, and of cousre the arrow is pointing to the tank ( Here is my sign). So I will swap the direction of the fuel line in the morning and give it a try. I will let you know how it turns out Thanks !!! If it weren't for self induced Pain.

 

[kenmyfam]

Re: Johnson 115 hp V4 non vro Fuel oil mix

Well thats the first issue sorted. Hope there are no more.

 

[RNYC Boat]

Re: Johnson 115 hp V4 non vro Fuel oil mix

Well that took care of issue one but: problem two came along.

It took awhile buit I got it running with the warm up lever in high idle, then Istarted lowering the lever to low idle a little bit at a time and the engine stalled. Tried to restart the engine and it would not, pulled the plugs because of the fuel smell and they where soaking wet, gave them about two hours in the sun to dry and reinstalled them, again would not start, and again the fuel smell removed the plugs again and found them soaked. ??? Carb float valve???

I am terrible at carb adjustments rebuild I don't think would be an issue have done that but adjusting I am poor at.

Am I on the right track or out in left field?

Thanks for all ya'lls help

 

[ezeke]

Re: Johnson 115 hp V4 non vro Fuel oil mix

Sounds like it's flooding after the cold start works. You need to be sure that the chokes will disengage as soon as you release them, which should be as soon as the engine fires.

Take the air silencer cover off the catburetors and push the key in with the switch in the run position; the choke plates should snap closed 100% and be perfectly synchronized. When you let the key out, the choke plates should snap fully open or horizontal.

There is a manual choke lever on the carburetors; make sure it is off for normal operation of your motor. You only use the manual choke when the battery is dead and you have to rope start (yeah, it can be done)

 

[RNYC Boat]

Re: Johnson 115 hp V4 non vro Fuel oil mix

Thanks for responding I can hear the choke plates open and close with the push in key switch and i have tried with the manual choke on and off still have wet plugs. Could it only be one choke plate opening and closing is that why you suggest taking the cover off?

How do I keep this posting rolling when I post a response it counts up but when you post an answer it goes back to the top of the threads Am I not doing something right?

 

[ezeke]

Re: Johnson 115 hp V4 non vro Fuel oil mix

You are hearing the choke solenoid, you want to see for yourself what the plates in the throats of the carburetors are doing.

 

[kenmyfam]

Re: Johnson 115 hp V4 non vro Fuel oil mix

Agree 100% Need to see it.

 

[RNYC Boat]

Re: Johnson 115 hp V4 non vro Fuel oil mix

I will take the cover off and look at the plates, and will most likely clean the carbs since I removed the plugs at the bottom of the carb and noticed there was some varnish on the plugs, I would guess ity needs it since varnish is there.

Looks like I have a little work to do.

Thanks for yall's help.

I have another question but I will post another thread:

 

[RNYC Boat]

Re: Johnson 115 hp V4 non vro Fuel oil mix

Well I looked at the choke plates and all was well, then I decided to check the spark plugs, well they are supposed to be preset Ha Ha what I found was the gap was at .035 where the book says the gap for that engine should be
.030 so I regapped the plugs and low and behold the engine started and purred then I shut it down temping faith and tried to re-start YEAH she started right up and purrs at about 3000 rpm Sweet.

Thanks for all your help

 

[Glastrons Forever]

Re: Johnson 115 hp V4 non vro Fuel oil mix

sounds like one or all of the cabs need cleaning / rebuilding - a flooded cylinder should tell which one or all - dirty / old gas has gel/ vanished the needle / seat / float assemblies