150 Johnson vapor separator fuel leak repair

We attempt to repair a fuel leak on my 1993 150 johnson J150ELETG.

[@lalo3045]

My motor didn't looked like it was leaking from there but was starving for fuel after 4000 rpm......i took the cover out press hard on the primer pump and i could hear air noises and a lil bit of fuel leaking thanks to this video

[@lalo3045]

I used a huge stainless steel hose clamp put it Araund it front to back tightened and the leak stop ...... between that tank and the vapor pump there is a O ring looked like mine was also leaking from there because its all plastic it bend so either put a ticker O ring or sand it down a lil to make it straight

[@garrettkeller3681]

I'm having the same issue on my 1994 Johnson 150. Thanks for recording this!

[@SEsGarage]

Any time! I did the carburetor bowls in another video as well. This was only a part of my leak

[@unstoppable_gaming132]

😢

[@alexkarabas6777]

At Bobbygfl- for surging like that, its likely a fuel suction leak... At Jason Kennedy same for you with the milky fuel- that's air getting into the fuel pump and when the diaphram mixes the oil with the fuel which has air bubbles it foams up. You both should splice a piece of clear tubing between the fuel fitting entering the engine and your bulb which goes to the fuel tank to see if there are air bubbles being sucked up. if so trace your fuel lines all the way back checking for air leaks. As for warped carb bowls and vapor caps, often times you can take a piece of fine sand paper, place it on a flat piece of glass and then place the carb cap on top and slowly move it back and forth to sand it flat, don't over do it or you'll take away too much material making the matting surface too thin and it can crack when you tighten down the screws. I've had pretty much had all the same issues, which I account it to Normal age, ethanol fuel deteriorating seals, hoses, jets and such.. These Johnson 60 degree motors are work horses, I have a 1999 on my boat with countless hours on it and the thing runs like a stallion. Here is a good read for all owners of these Johnson Evenrude VRO style engines. It helped me find the solutions to my problems: continuouswave.com/whaler/reference/VRO.html It has a Nice diagram explaining all the working parts of the VRO pump system. Hope that helps you all.

[@davidjessee7701]

So this is a video on how not to repair a fuel leak...

[@timothyleegriffith]

Always that one guy. Mine was leaking fuel and this fixed it. 😆

[@user-ym9wb2mk5e]

Just got a 91 150 Fast strike. The kid I got it from has removed the whole pump and vro assembly so he could premix. Hope I have all the parts! I guess that whole assembly in the middle is the fuel pump and vro together? I’ll be ordering an official omc service manual at some point.

[@jeffpowell2864]

When cutting zip ties don't try to cut it where the hose is, just cut the big square block, it will come right off and no damage to the rubber hose

[@hunterchappell8746]

Will this problem not let your boat run? Mine is leaking there also but not as bad and it will not run more than 4 seconds

[@jasonkennedy6650]

So i have had my carbs cleaned. new fuel pump. New primer ball . And so on .. i can not get to half throttle before it starts to bogg down.. i had just noticed that there is a light milky fluid coming from the carbs. Im assuming there is water getting in with the gas . New gas with new tank was run though and still same issue. What could be causing water to mix with gas .. 1998 evinrude 115hp intruder v4

[@vintonbeaty9173]

I have the same issue with mine. Did this repair the issue? Thanks

[@hilarytrevornorville4977]

Hi.....I watched your video countless times . I have a 175hp Johnson v6 outboard 2000 model. My vapor separator is just like yours.....my problem is I don't know where to connect the small air hoses on the vacuum.... Do they go to the carbs......or the engine block ..please help

[@bobbygfl]

Question for you, I have the same motor. Having a loosing rpm surging issue at full throttle. Idle to cruising no problem. Hole shot no problem. Here’s the super weird thing if the boat is on choppy water or navigating boat wake it maintains maximum RPM. If the boat is on calm water and full throttle it begins losing RPM and then gaining RPM losing RPM then gaining RPM and it just repeats. This occurs within about 10 seconds of full throttle in calm water. Pull back the throttle slightly to a cruising RPM and it performs fine. List of things already replaced: fuel vapor housing gasket, all fuel line fuel bulb and anti-siphon valve. Filter Water separator and water separator housing. Rebuilt the carburetors. After all that we moved on to a potential electrical problem. Started motor disconnected main Canon plug and ran motor eliminating any ignition issue boat side. Replaced Power pack and optical sensor. Waiting on coil and plug wires (on order). Should arrive this week at which point I will replace. Replaced plugs. That’s everything we’ve done so far. Have you ever seen this and do you have any idea what it could be? Many thanks!

[@sneakerkings1]

Any luck finding out what happen? I’m having the same problem

[@bobbygfl]

@@sneakerkings1 hi. Yes. In the bottom of the plastic bowl is the high speed jet. Evidently the last time I rebuilt the carb when I installed the jet I must’ve cross threaded it producing a tiny little curly piece of plastic that extended near the front of the jet. Bowl side if you know what I mean. Anyway over the years that little piece of plastic became weaker and weaker. Finally it became weak enough where under full throttle it would fold over the whole restricting fuel. I replaced the bowls and this is when I saw the little piece of plastic fall out. I literally replaced everything on his motor and that was the problem LOL. I’m glad I did because now everything is new in the motor runs better than it has in years but probably could’ve saved two grand!

[@richgosh7793]

I am also having the same problem. It started last year, around the time I had the vapor chamber replaced, although I don't know if it's related. It recently got worse after hitting bottom like an idiot. I changed the prop last week and it's better but similar to last year. When testing it out, I noticed when driving along the beach in one direction, it seemed fine but when I was going in the opposite direction, the engine would rev and I'd lose power. I repeated over and over and oddly enough, it continued to do the same thing. I believe it's a cavitation issue caused by my fish finder. It snapped off 1-2 years ago and I epoxied it back together and I think it's causing turbulence or air bubbles in the water. When I turn port side, the problem seems to go away, so I am thinking it's lifting the position of the transducer. I could be way wrong here and maybe like Sneakerkings, there is a little piece of plastic sticking out, although no one should have touched my carbs. ps. I've noticed the issue more so when there is more weight in the boat. pps. there was a little damage to my skeg, so I filed it down so there were no imperfections, but I do believe it has a slight bend from hitting ground, so i will probably cut it off and replace it with a metal one at some point.

[@frippe666]

@@bobbygfl I have similar issue. How can I investigate if I have the same root cause on my motor? I'm not sure what you mean with "bowl side".

[@damianhughes7034]

Did that fix the problem

[@orlandocantu1258]

Man my 175hp Johnson has been sitting for 6yrs and I just ordered over $1,300 in parts and was hoping I could find a way to eliminate all this octopus 🐙 mess and put like an electric pump or oldschool pulse pumps because I can’t find the same parts like the vapor chamber and stuff there discontinued, any tips on here?

[@lalo3045]

Yes buy a 6' pressure clamp and put it Araund the to seal the it worked for me stop the leaking

[@Ocean_breezes]

Good video Did you fix it?

[@SEsGarage]

Yes I did!

[@sethtravis9293]

Did it ever work?

[@mohabirsomwaru7624]

You have to adjust that carburetor float it's over flowing

[@Ocean_breezes]

I had fuel delivery issues for a while on my 2004 Johnson 90hp 2-stroke A few years back I had the VRO removed and went to premixing in my inboard tank This year I couldn't get the motor to stay running after pumping the squeeze ball It would start right up and run until the carb bowls emptied then stall Long story short , after trying several fuel pumps, I removed the entire VST and made my own pump and primer system Motor now runs better than ever The VST tank and pump combo is prone to air leakage I tried rebuilding everything and still had issues Simple is more efficient

[@marioarciniega4524]

How did you make your own pump and primer system

[@Ocean_breezes]

@@marioarciniega4524 I removed the entire fuel system, the Oiler and the VST I kept the primer assembly I installed a standard fuel pump with a double TEE fitting Attached the Pump to the fuel rails and the primer assembly through the T fittings Capped off 2 lines from the Oiler Motor running better than new, no stall issues at the dock or idling in the water

[@aj2no17]

@@Ocean_breezes any pictures on this or videos on how to do this? Looking to do something like this as well

[@Holmesie2804]

I too would be very interested in knowing exactly how you did this if you care to share details!

[@dominikwojtas2550]

Hi Fella ,Ive got a question to you,can you make few pictures of your rebuilding? Thanks and greetings from Poland 😉

[@noneyerbidness]

So did it work? What was the problem? Was there a warp? Was it just a bad gasket? What does RTV do? Getting ready to work on the same problem with my 90 HP 2004 Johnson.

[@SEsGarage]

So I still had a fuel leak after I completed this repair, However the leak from the vapor separator was fixed. All 6 of my carbs are leaking from the float bowls. I will be putting a video up within the next few days showing how to remove the carbs and replace the seals

[@noneyerbidness]

@@SEsGarage brother, I really appreciate it. My starboard carbs were leaking last year, I found a dude to help fix it. I know my ports can't be far behind and I'm hoping to do it myself. Looking forward to the video, thanks!

[@SEsGarage]

@@noneyerbidness any time! I just finished my starboard side yesterday afternoon before it started to rain, so I’ll be getting the port side on video. While I was in there I replaced the throttle body gaskets as well

[@noneyerbidness]

@@SEsGarage i wouldnt even know what a throttle body gasket is. i meant to mention that i followed your lead and replaced the vapor separator on my johnson 90 the other day. worked like a charm. i don't think i have and warpage (like the carbs). i wanna strangle the person who ever thought plastic parts was a good idea.

[@Ocean_breezes]

Have a 2004 90 Johnson also Same problem Did you fix yours? What were the symptoms?