1988 johnson fuel line Diagrams

Imissedem

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Just wondering if anyone knows where i can pull up on the computer a diagram of all fuel line /primer line connections???????????ITS A MESSSSSSSSSS.1988 Johnson 150 VRO...........
 

tashasdaddy

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Re: 1988 johnson fuel line Diagrams

very simple when you step back and look at it. you have supply from hose connection to vro pump, you have the pulse line to vro pump. you have an out going line from vro, that splits to the carbs, and the primer, IN connection. you have the primer out line that splits to the carbs, and the block. take one system at a time. it is not rocket science.

look here > http://shop2.evinrude.com/ext/index.aspx?s1=bf6ad09c53cead335fcfd8a6471c0f7f
 

Imissedem

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Re: 1988 johnson fuel line Diagrams

Primer lines ok /VRO Lines ok / Its the block lines i believe .Can some of them be crossed.The guy who owned it before me made a mess i think.I have #1 and #6 cylinders fouling out.And i see what looks like oil mix or fuel leaking out under top carb /but not fromthe carb /i believe it is from one of the lines at the nipple on the back of block and leaving a puddle on top of middle carb.That is why i am wondering if these lines could be hooked up wrong.Lot of diff. T`s there /but i am sure of primer lines.What do you think about this fouling out 2 cylinders????????/GOING NUTS HERE///////////////
 

ezeke

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Re: 1988 johnson fuel line Diagrams

Click the thumbnail, please:

You will have to follow the VRO to carburetor and primer solenoid lines, because they don't show in the diagram.

You won't be able to reach the recirculation check valves with the carburetors in place.
 

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Imissedem

Petty Officer 3rd Class
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Messages
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Re: 1988 johnson fuel line Diagrams

Thank you /Both of you /Looks like i will be pulling this apart again tomorrow.Does this sound or seem like my misfiring and running crappie oil leaking motor problem............thanks again John..................
 

ezeke

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Re: 1988 johnson fuel line Diagrams

Be sure you have the handle on the primer solenoid in line with the solenoid cylinder or the engine will flood.
 

Imissedem

Petty Officer 3rd Class
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Re: 1988 johnson fuel line Diagrams

Just went and double checked that and that is allset.Those lines are hooked up properly.1 to the top of each carb correct??1 by itself and the other ones off the T to the other 2 carbs.
 

Imissedem

Petty Officer 3rd Class
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Re: 1988 johnson fuel line Diagrams

Gonna be checking things out in the AM.I definately have something leaking up in there.What else could cause #1 and #6 plugs to get so dirty.
 

Imissedem

Petty Officer 3rd Class
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Re: 1988 johnson fuel line Diagrams

Well it turns out i pulled out all the check valves and most were plugged up.Put it all back together and purred like a kitten.BINGO/but got to the boat ramp and she was all flooded out.Why oh Why.Got home ran fine after sitting in the driveway.Seems as though during travel she floods out.WHY/////// I am getting close now...............
 

tashasdaddy

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51,019
Re: 1988 johnson fuel line Diagrams

disconnect fuel line, especially if you have it tilted, tilted the carbs are out of level, and the float needle may not seat, allowing fuel in.
 

Imissedem

Petty Officer 3rd Class
Joined
Dec 27, 2008
Messages
93
Re: 1988 johnson fuel line Diagrams

Is this common in that motor and is that all it could be?????????Sounds like the problem to me.Thanks again for all the help .We are getting somewhere.........
 
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