Johnson/Evinrude 115hp, Not Sure Where To Go From Here

[atktom]

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I had my powerhead from 1981 Evinrude 115HP replaced with a Johnson 1978 115. Now my mechanic used the parts off my 1981. To the carbs he modified the Idle adjust passages to accept the gas flow from the Power Soleniod unit and turned the red knob about the 4 O'clock position so it would idle, only problem is it is idling way to high like 2500 rpm's. I turned the knob towards the run position and it idles down and dies out. I am out $1750 not sure what to do. I have taken the carbs off and am fixing to clean them hoping this will help. There was gas leaking around the carbs while it was running. Not sure if this is because of constant gas being applied by power solenooid or if the gaskets need replacing. What would you all suggest, should I order used carbs for that year along with the manual choke system and try to put it back together or what? I cannot find a manual for 1978 so this makes it even hard on me.
Only thing the engine has going for it is the compression is great 120 on one and 116 psi the other three. Will try to post pics on what my mechanic did.

 

[racerone]

Should be using the 1981 carburetors and bypass covers I think.-----Red lever should not be used in the part open position.

 

[jakedaawg]

Did he die? Why will he not make it right?

anyways, running on muffs tends to boost the idle. We're you in the lake or on muffs?

as far as gas coming out around carbs, you need to be much more specific. Where around the carbs?

the red lever should be inline with the body of the solenoid. Absolutely no reason why it would need to be offset except for poor carb setup or general shoddy work! It's obviously running lean hence needing the extra fuel from the primer valve.

BTW, welcome to the forum. Your issues are solvable assuming you tell the whole story and answer questions to the best of your ability.

make a few more posts so you can post pics.:welcome:

 

[atktom]

I do not want to contact him anymore feel like he cheated me. I did not see the gas leaking but in the center to of each carb on the outside there was gas in that whole, plus underneath the carbs and area around the bowls was wet too. I agree and understand what position the knob should be in. Will the idle orifices work from the main gas hose without the primer solenoid being constantly putting gas in. If so then doing a good carb clean could be the solution. I think what he was doing with that modification was giving a way to choke those 1981 carbs. Yes I was running it on the muffs but have read 2400 entries and according to J. Reeves and others it should idle aroun 1100 rpms on the muffs.

 

[atktom]

The pics are showing on my computer in my first post, hope others are seen the 2 pics

 

[atktom]

What exactly are bypass covers, I have seen that mentioned in other posts.

 

[jimmbo]

The pics are showing on my computer in my first post, hope others are seen the 2 pics

No.

 

[jimmbo]

What exactly are bypass covers, I have seen that mentioned in other posts.

They are located on the sides of the block, and are Trapezoid shaped covers. They provide access to the inlet ports.

 

[interalian]

The mechanic (sic) who modified the carbs to go with primer - the right way is with a nipple on the top of each. I did it with my '79 carbs to go with my '82/79 hybrid.

The bypass covers would be OK from the older unit unless you're trying to use the fuel recovery lines. Attached photo with blue and silver intakes: the silver one is '82 and has fuel recovery valves showing, the blue one is the '79 and doesn't have them.

You need to make your pictures under 400kB or they won't attach.

 

[atktom]

Yes my mechanic put 4 nipples with JB Weld, on at the top of each carb leading down a chamber to idle orifice. then the small hoses go to the primer solenoid, two to each small knob on the solenoid.

 

[atktom]

Okay trying to post my pics here again, looks liked they worked on the test channel but not sure if working here.

 

[jakedaawg]

I am gonna say those are now shot. The primer fuel needs to enter behind throttle plate...all he managed to do was screw up the idle circuit of the carbs.

 

[atktom]

Bummer, that is kinda what I was afraid of. That is probably the reason he had the primer solenoid knob turned to 4 o'clock position to keep it idling. Guess I will be out of fishing this year as I am retired and I already gave him $1750. Will have to save up to buy carbs, and figure out how to buy and install the original choke that was suppose to be on that engine.

 

[jakedaawg]

If it were me...he would be supplying the parts!

I find it amazing someone would take money for something they have no clue about.

 

[atktom]

I cannot find a 1978 manual, which would not help with my new idea. After looking at other carbs on the net, I was thinking I could use some heat and remove those nipples and JB Weld the hole close. Then with luck I could go and drill new holes towards the back center on each intake hole and reinstall the brass tips after the throttle plate just to left of the little tiny hole that is already there inside the large throttle plate hole. Don't know if if would work but would sure save a lot and would not need the book to do that.

 

[jakedaawg]

Private message sent, I think.

 

[racerone]

Your location ?----The correct carburetors are not hard to find.

 

[atktom]

I am located in Mineral Wells, TX, home of nothing. lol

 

[atktom]

Okay I found and ordered the service manual for 1978. At least now I will have a chance to put the carbs and choke back to original if I have to. Still gonna try to see if the carbs I have can be fixed to properly handle the primer solenoid. Going to check out a couple of mechanics next week after Easter. Will keep posting here to advise of progress. Thanks again to all.

 

[atktom]

Interalian mentions using the by pass covers. Don't know what kind of plug(s) I would need for those. I am not looking to do the recovery lines, just looking for a way to prime/choke while starting and then idle properly after warm up. I have ordered replacement used carbs from the 1981 and will start over with those. I am will to drill into those also to put the primer hoses.

Also, I took the two rows of side screws below the carburetor gas bowls where the high speed and intermediate jets are, high speeds look okay. The intermediates, one carb was blocked, after running a wire thru it I could see all the way thru to the other side like the other carb. Those intermediate jets if there are two per carb are way in the center of each hole where as the high speed just are just a little ways inside making it look like there is only jet when looking down it with a flashlight. Don't know if this is normal.

Hope Interalian post back to me, and I appreciate all other response/comments others post too. Tks