Johnson/Evinrude VRO Fuel Pump Conversion

Just a quick video to go over my 130hp Evinrude's VRO to fuel pump conversion.
OMC part number: 438559
Order of hoses (from back of pump to front): Pulse, Fuel Out, Fuel In. Photo diagram - 1drv.ms/u/s!AjeB4M-BsGz1nptsY...
Video of motor running after fuel pump was installed - • Evinrude running after...

[@LegacyStudio]

Jason you are a hero among men my friend! Just ordered my pump!

[@renecenteno5921]

Thank you for this video dude, please don’t take it down......this is just what I was looking for 👍🏽

[@JasonLefevers]

Glad it helped.

[@SoCalSeaChaser]

AWESOME VIDEO, just what I was looking for today, similar motor too! Also now I can see where my primer solenoid is supposed to go, lol.

[@deandurfey4715]

Great video, I have my pump and as soon as I pull my 90 horse Johnson out for the season , I’m converting! Thanks

[@jamesdelaney1066]

Great video. I did exactly the same thing on the bracket, using angle brackets. The only thing you forgot is to be clear to show which hose hooks up where. I had to look it up elsewhere. But thank you so much! Evinrude 140 2 stroke

[@JasonLefevers]

I thought I mentioned in the video where each hose hooks up, but couldn't show it due to only having two hands. My Evinrude is still going strong with this setup.

[@timgeerts6]

What is the pulse? My boat was previously modified. Seems the pulse line from crankcase is capped. There is a inline fuel pump. Is the fuel pulsing normal? the inline pump seems weak with pulsing and fluctuating. What powers this pump? My inline pump kicks on when the key turns.

[@stupidFYE]

What if my oil line isn't already plugged? and what is the wire plug for if I don't have to reconnect it? Thanks

[@roonbooks3227]

Nice video!!

[@on1ytheb3st]

Do you still have to have that wiring harness you unplugged actually plugged in when still running the VRO but with a plugged oil feed line and premixing the tank?

[@smithfam90]

Wish you would have shown what lines went where.

[@broncohuntly_7269]

Were does the pulsate hose go.. the bigger hose coming out of motor??

[@rmaarms114]

Have you ever checked the fuel pressure in comparison to the VRO? I read someone's write up that this didnt create enough pressure at WOT. I have a v4 120

[@JasonLefevers]

I can run at full WOT with no issues or stuttering.

[@Seanboatfishing]

Will this be the same for the Johnson 150 fast strike I really appreciate your video

[@user-vs5rn5fz4q]

Is the 140 hp fuel pump a different part number? Just bought a 1986 ragin cajun with a johnson 140 but the fuel pump is leaking and the oil pump isnt working and is even wiring up im guessing original owner did it like that i just want the battery bay to be clean so im taking the oil tank completely out

[@flyhog8574]

Does the pump need to be in a down orientation?

[@kazimierzszczyrba7241]

So once you do this, then u get rid of oil injection, and just mix the oil straight into ur gas tank ? 50:1 ratio? Is this correct?

[@JasonLefevers]

Yep, that's correct.

[@fredvillareal3929]

Did you use the gasket that comes with the fuel pump

[@jamesschilling126]

Excellent.

[@duncandmcgrath6290]

Picked up a 19 foot aluminum with a 90 hp VRO that has the typical failure....glad I watched your vid , now I’m up and running.👌

[@JasonLefevers]

Awesome, glad it helped.

[@jimmyhodge1348]

Would this pump be why my 90hp will run but you have to keep squeezing ptimer buld to maintain the motor running

[@JasonLefevers]

@@jimmyhodge1348 Yep, if it will run only when squeezing the primer then that usually means your fuel pump needs to be rebuilt or replaced.

[@user-mi1th1fl2j]

If you have two carburetors this pump only has one outlet. Will it work for two

[@ralph52]

Will this work also on a Johnson gt 200 also?

[@pavloskourris277]

I was ready to delete my VRO and go with premix. If you delete/disable the VRO do you need to add a fuel pump? All other videos just disable the VRO and leave it in in its place. They just disconnect two sets of wires (the one you showed plus some others and cut off the 2-stroke oil supply by placing a bolt in the line (you also have this). But no other video speaks about adding a fuel pump. Am I missing something? Thanks

[@adamtheissen6957]

Do you have a link for that exact part?

[@andyhoang870]

how to clear no oil alam thanks

[@DavidStringer-vw2xx]

How would eliminate the vapor separator on a 96 model

[@jamiemoore5621]

Would this be the same part '0438559' for a 1989 50hp Johnson VRO?

[@JasonLefevers]

I'm pretty sure it's the same part. That pump is used across a number of different model and HP engines.

[@roonbooks3227]

It appears thT some fuel pumps have a third hole on the back that mounts to the block. I'm wondering why your fuel pump only has 2 holes. Do you have an explanation as to why yours didn't mount to your engine block? Also, what yr is your engine?

[@PLAYwithGregg]

What size Bracket is that? 2”, 2.5”, 3”?

[@JasonLefevers]

i honestly can't recall. If you have the pump already, you could take it to Home Depot with you and size it up.

[@billypyles212]

Mine is a 2004 90hp johnson bombardier, its feeding way to much oil, want to do this, would this fuel pump be correct?

[@JasonLefevers]

Should work fine on a 90hp

[@Keepingitreeled]

Can I use that pump with my 225 five ocean runner or is it too small

[@JasonLefevers]

With a motor that large you may not be able to get by with just this one pump. I've ready where people have put two of these in an array for larger HP outboards.

[@Boatfisherz1]

wonder if this is the same as a 70hp 2000?

[@racsozerep8671]

Hey do I need to disconnect any wires to the VRO ? I want to do pre mix. So I see wires but they go to a bundle and there’s no disconnect like you showed here. Do I just cut them up ? Help me out here man. Thanks

[@michaeladams7562]

Hey man did you ever find a solution to this? I have the same question…thank you!

[@absolutehandymanandremodel3940]

@@michaeladams7562. Not really. I end up cutting the wires to deactivate that VRO. it worked out well for some time but then the motor just started sputtering. Finally got rid of it

[@akytoy28]

Hi Jason, Nice video...but i try on my 120 hp vro and didn't work...I don't know whay i did wrong.Will u pls put a video up showing how the hoses go in place..TY

[@JasonLefevers]

ElCaPItAn_SWF See video description

[@hondoe3442]

Thank you

[@thekip1953]

I have a 1990 150 hp evinrude that was converted from a VRO to an electric pump and its hard to start and I flood it out a lot and have to change spark plugs. Would changing it to this style pump fix my problems? Would I use the same part number pump that you used? BTW great video.

[@JasonLefevers]

Yep, that electric pump is probably forcing too much fuel into the system. I would convert it to one of these pulse-driven pumps.

[@littleben619]

Which house goes to which Barb?

[@jeremyrose2667]

Do you block off the vacuum port on the back of the pump.

[@TheeDutchMafia]

There is no port on the back of the pump in the video.

[@shooter3288]

Interesting. Mine has VRO. When looking at parts on line my shows a standard fuel pump replacement with 2 connections on the fuel pump instead of 3.

[@_redrum_x]

There is a port on the block with a plug you can remove and the block will feed the pulse to the pump

[@SoCalSeaChaser]

Did you have any issues once you submerged the motor in water where it wouldn’t run, but ran with no issues on muffs?

[@JasonLefevers]

Nope

[@michaelsummers8477]

will this work if you have a fuel prime solenoid?

[@JasonLefevers]

Yes, my motor has a primer solenoid.

[@nickrowe9032]

@jason lefevers Is mounting the fuel pump required for it to work? My fuel lines i replaced are making it near impossible to mount.

[@JasonLefevers]

No, it doesn't have to be mounted directly to the engine as long as the lines are all connected. It just makes it a little sloppy.

[@nickrowe9032]

@@JasonLefevers appreciate it.

[@baytownhatco.5174]

Is there any way of contacting you? I have a dumb problem with mine

[@alafanlaman]

Thanks Jason. Great video. I am working on a similar motor-Johnson 120 VRO looper engin-4 cyl. VRO housing was cracked where the previous owner overtightened the bolts. Not paying 400-500 for basically a piece of plastic. My main concern with using a single pump was not being able to keep up with fuel demand. You run a similar engine. Have you had this issue with your 130? There are a lot of duel-pump set ups out there. Trying to make an informed decision.

[@JasonLefevers]

Never once had an issue. That pump in the video is still going strong and I have no issue even on the high end. If you are under 150HP you should be fine with this single pump setup.

[@michaeladams7562]

Hey bro just came across this video, well done. I am doing a similar replacement on my 175, what did you do with the electrical lines and power pack that ran into the vro pump? Thank you!

[@JasonLefevers]

I just bunched them up and tucked them into the wiring harness

[@Ocean_breezes]

Agree, unplug and cap it The only wires you need will be 2 wires if you have an electric primer

[@zanec1780]

How did it end up working on a 175. Was the single pump enough?

[@jacklowe3788]

Do you have an update for the 175hp?

[@dillee9988]

I have a Evinrude 115HP V4 , I purchased the same pump as you, but this pump does not have any electrical wires, how does this pump work without being connected to the electrics. How does the pump work with no wires connected.

[@JasonLefevers]

It operates on a pulse from the crankcase that moves a diaphragm inside the pump in and out which pulls fuel from the tank. Most pumps on these 2-stroke motors are made this way and do not use an electric pump.

[@duffg9229]

You should keep doing "how to videos" this helped me a lot. My motor is spewing oil all over my driveway and its dripping down the skeg. Before I order the fuel pump. Can I disconnect VRO but still use it as a fuel pump? If so, I obviously need to disconnect the oil line but then do I disconnect the 3 prong connector, the ground and there are 2 other wires. Thanks in advance. Great video

[@JasonLefevers]

Yes, disconnect the oil line and the three wire plug and use it as just a fuel pump.

[@duffg9229]

@@JasonLefevers much appreciated

[@edwardtomlin8592]

Did it perform when you got it in the water? Just wondering what that little hole in the back with the gasket

[@JasonLefevers]

Yes, very well. There is not a hole in the back. The pulse is driven from a hose inlet on this model pump.

[@eamoncinco7623]

can i replace a evinrude 15hp 4 stroke fuel pump with a 2stroke fuel pump?..

[@sir.icefire5470]

Probly not 2strokes use a pulse from the engine to run the pump 4 stroke will usually run on a cam system

[@richarddewitt-lt7pl]

I wish u would showed we're fuel lines went too

[@scn102]

Will this pump be good for A 1984 235hp v6? To lean ?? Ty

[@JasonLefevers]

Nope, I don’t believe this pump replacement pushes enough fuel for motors in that high of an HP range. There are some after market pumps you can Google for that range I believe.

[@Nohkral]

What's the benefits or differences of vro pump vs normal fuel pump? I have a 1993 super sea horse evinrude. So hard to find info, please help! Thanks

[@JasonLefevers]

Mostly convenience. A VRO means you don't have top premix, just have to keep the oil reservoir filled with oil. However, a VRO is just on more thing that can break and if this happens on the water you could be running a motor with only fuel and no oil to lubricate the engine, which can cause major damage.

[@bobatbilletcreations]

Normal fuel pump is a lot more reliable and a ton less to go wrong, Not to mention the cost of replacing a VRO.

[@waltklauder48]

Did you have to put an o'ring on the port on the back of the pump?

[@JasonLefevers]

No, because the pulse comes from a hose and not a port directly touching the fuel pump.

[@whiskeytangofoxtrot5939]

But what lines went to where? And did it work out, going to install on a 120 and wanna make sure it will have enough fuel from idle to wide open?

[@JasonLefevers]

Check the description

[@whiskeytangofoxtrot5939]

@@JasonLefevers nice I like it, no fuel starve anywhere? Can back off and right back on it with no hesitation? Or I guess I’ll find out I ordered it lol

[@JasonLefevers]

@@whiskeytangofoxtrot5939 No issues at all. I get full throttle with no hesitations.

[@jakethomas3729]

How do you figure out which pump you need? I have an 1986 Johnson 200 horsepower outboard engine on my 1986 Cee Bee "The Avenger"

[@JasonLefevers]

With a motor that large you may not be able to get by with just this one pump. I've ready where people have put two of these in an array for larger HP outboards.

[@bmp767]

@@JasonLefevers hi Jason. I have a 225. You mention 2 pumps. How are they set up? In-line or two outlets to one T - junction then to the engine. Same for pulse line?

[@JasonLefevers]

@@bmp767 I have seen them in line

[@seandrake7534]

So how did you block the vacuum pot on the backside you use the gasket between the pump and bracket

[@JasonLefevers]

There is no vacuum hole since there is a fitting on the block with a hose for the pulse.

[@seandrake7534]

@@JasonLefevers on the after market pump I got it had the hole one the back where it would bolt to the block and a port on the front I just cut a pice of rubber and sandwiched it between the back of the pump and bracket

[@zxrmuzzy]

My vro system is good and working but I would to free up some space or use the oil container for emergency fuel tank. Should I just leave the vro system till it breaks or do the conversion now.

[@JasonLefevers]

That’s a personal call. For me the VRO is just one more thing that can fail while on the water, so removing it and premixing your fuel ensures that there is never a moment when oil is not lubricating the engine as long as you remember to premix when adding fuel.

[@zxrmuzzy]

Did the fuel pump swap last weekend. Awesome result. Thankyou.

[@mando0503]

Does this pump have the pulse hole in the back of the pump or does it have a block off plate installed or did you block it off

[@JasonLefevers]

If you purchase the pump with the part number in this video the pulse hole on the back is closed up with a plug and pulse is supplied via a hose instead.

[@stephenschrader6087]

The OEM pumps can come with or without the hole in the back.@@JasonLefevers

[@garrenhauer2386]

Hey man I have a Johnson Gt150 VRO but I am not sure if the pump is bad. I was out on the lake today for the first time on the boat and cut the motor to fish but around 5 minutes later I tried to start it back up and would not start. It was leaking fuel and oil out of the prop. Not sure if it is the VRO system. Thanks

[@Ocean_breezes]

It is definitely the VRO Mine 90hp Johnson did the same until I converted it to simple pulse pump

[@jacklowe3788]

Did you convert the 150hp?

[@bubbleseverywhere194]

Where did you get this pump? Thanks

[@JasonLefevers]

Ordered on eBay. but there are many places online to get it. Just search for that part number.

[@wavehaven1]

Cool, Thanks. just may do that. Before I junked my Johnson 130 hp, just wanted to see this thing run for awhile. That VRO is junk even if you buy a good one, they're more trouble than premixing. This thing started using 2x's the amount of oil, smoked like crazy and barely got home from running out of oil. Bypassed that VRO and run synthetic premix... its good to go now with way less smoke. Using a leaner oil at the dock and switch to the heavier oil ratio out in the open. Gonna try a leaner ratio than 50:1 out in the open later. May help someone understand that VRO oil pump which will fail, probably when the big fish are biting.

[@ct1762]

This is an OMS pump, not a VRO. Anyway they are spectacularly simple and reliable air-pump systems. Its the owners that do not understand how it works that cause issues. that and hilarious rumors like "my buddys uncles friends motor cooked 2 cylinders out of 6 when the VRO crapped out"

[@bobatbilletcreations]

@@ct1762 Not nothing hilarious about losing a $25,000 engine because the VRO decided to stop pumping oil. I will never have another one, And I'm a marine mechanic and know how to maintenance my boats!

[@ct1762]

@@bobatbilletcreations again its a simple air pump. it will pump MORE oil not less if the diaphragm is torn. very easy to service. and what OMC motor was $25,000?

[@bobatbilletcreations]

@@ct1762 It wasn't OMC it was a Mercury engine. The VRO did stop pumping oil and this is not the only person this has happended to, Search it and see for yourself. There are lots of people junking these systems because they are garbage and can fail and lead to catastrophic engine failure!

[@ct1762]

@@bobatbilletcreations can they fail? sure. with neglect anything can fail. its a poorly understood but simple and highly reliable system that gets blamed for everything. the original VRO did run at 150:1 at idle, which did cause issues. once they were fixed with VRO version 2.0 they were dead reliable. i do a ton of OMS/VRO conversions, and love to premix over the hassle of having to maintain a separate oil tank, but not because the system is unreliable. i actually sell custom conversion kits.

[@shawngay6933]

can I use the same fuel pump to convert my 1990 Johnson 60 HP ?

[@JasonLefevers]

Yes

[@lauramonroe9446]

Which hoses go where? At the end you just show it back up and running but I'm not sure which hoses go where. Thanks

[@johnmelzer2576]

EXACTLY

[@JasonLefevers]

See video description

[@JasonLefevers]

john melzer See video description

[@flyingkevo]

Description should say 5min video of how I made a bracket. Does not explain anything of how to convert, or what to do with the fuel/oil lines.

[@JasonLefevers]

@@flyingkevo This is not rocket science, so if it's not obvious where the lines go you should leave it up to a professional. That being said, see description for more info on where the lines go.

[@keithstanford1272]

Great Video - I watched it 2/3 times. I have a completely rebuilt 1995 Evinrude 130hp (VRO unhooked) and I am experiencing the same problem - it just started sputtering or cutting out --If I have someone pump the bulb it runs great... I was told the fuel pump is going out. I want to just replace the fuel pump BUT I am WORRIED about the 3 or 4 people who mentioned the center hole in the back. HOW do I fix that hole so it will run properly? AND I was also told that the Fuel Pump # 438559 will NOT supply enough for the 130hp to run properly. WOULD you PLEASE respond to these questions. Thanks Keith

[@JasonLefevers]

If you purchase the pump with the part number in this video the pulse hole on the back is closed up with a plug and pulse is supplied via a hose instead. As for your concern about it supplying enough fuel I’ve never had an issue as long as the fuel barbs are open enough, I’ve seen a replacement Sierra part for this pump that is identical, but the fuel barbs aren’t as large which causes it to not supply enough fuel, so I’m guessing that those people likely bought an aftermarket pump that was intended for a smaller motor.

[@r.seaboats6666]

So I have an urgent question These pumps come with a gasket And there's a small peep hole down the center Am I supposed to block that off? Because it seems like the pulse line can blow right thru it Which wouldnt make sense

[@JasonLefevers]

There are two versions of this pump. One with a separate pulse line and one that attaches directly to the motor which feeds the pulse through a hole in the back of the pump.

[@r.seaboats6666]

@@JasonLefevers I bought one with three lines but it still has a hole down the back il prob justJB weld it

[@brentprince9508]

So did your new fuel pump work ok mounting it like that ? Because I noticed you didn't use the gasket when mounting it. So it had to be leaking airflow from the back pulse hole because it was the 3 line type. I hope you see this and let me know

[@scottmcmillan5085]

If you noticed in his video, the pulse hole on the back of his "new" fuel pump rests against one of his brackets. I'm sure its starts and idles just fine, but he puts a load and high rpm on it, I'm sure it will start to suck air through the hole on the back, and run ike crap. Impossible to create a proper vacuum with "leak".

[@aablurr]

@@scottmcmillan5085 so what is the fix, I currently have the same setup on my 1987 60 and your absolutely right it'll run balls out for about 20 mins and then crawls back.

[@scottmcmillan5085]

@@aablurr sorry for not replying sooner. I just found this in my email inbox. That hole on the back rests against my new bracket. So.... I put some permatex gasket on the bracket and the hole and pressed them together. Let it sit over night, then tightened it down. Runs like a champ.

[@JasonLefevers]

If you purchase the pump with the part number in this video the pulse hole on the back is closed up with a plug and pulse is supplied via a hose instead.

[@noahlee9985]

I have a 1988 johnson gt 150 and when I run wide open throttle it cuts out is this because of my vro being discounted and me premixing? Because there’s not enough pressure? Would putting a new fuel pump work?

[@JasonLefevers]

On a 150hp, you would probably need two standard fuel pumps as one wouldn't have enough fuel flow.

[@noahlee9985]

Do you know what the part numbers would be

[@JasonLefevers]

@@noahlee9985 Go to MaxRules website. They have replacement non-oil ones on there by HP. www.maxrules.com/fixomc-no-oil-vro.php

[@wtfjpgmailcom]

Just buy a vro rebuild kit 30 bucks and yer good

[@JasonLefevers]

@@wtfjpgmailcom I wouldn't buy those cheap $30 rebuild kits. I'm hesitant even about the expensive OMC ones, but those cheap China-made ones are way worse.

[@anthonyhill3771]

bummers, I’m looking for which lines to hook up to the fuel pump because I don’t know which line goes where

[@MrTaylorfenoglio]

hey look in the description on the video he actually linked a picture that showed what lines go where.

[@anthonyhill3771]

@@MrTaylorfenoglio thank you

[@ernestocortes2903]

I have an 225 1988 johnson my vro is gone am doing this for sure ty , will this part fit my engine?

[@JasonLefevers]

With a motor that large you may not be able to get by with just this one pump. I've ready where people have put two of these in an array for larger HP outboards.

[@phuquetwo]

@@JasonLefevers surely there's a larger single pump out there....

[@JasonLefevers]

@@phuquetwo I'm not aware of one. You could always get a rebuild kit for the existing VRO pump and just disable the auto-oiler.

[@RubenGarcia-in3tt]

Will a single pump for on a Johnson 150? Or would I have to run two of them.

[@JasonLefevers]

One should be fine

[@RubenGarcia-in3tt]

Appreciate it

[@louisianag]

My 98 Johnson 70hp vro was leaking gas so I got a cheap I'm guessing aftermarket vro pump on Ebay for $180 hooked it up easy went on lake and in 2 hours coming back to ramp my no oil alarm went off and motor died down bad and wouldn't accelerate Starts right up tho idles fine. Will this solve my problem? Do away with the VRO system completely??

[@JasonLefevers]

Yes, it very well could, but you'll need to premix your oil/gas and get the official OEM non-VRO pump and not a cheap thirsd party one.

[@louisianag]

@@JasonLefevers That's what I'm trying to find I cant find it. My Johnson model number is J70PLEEE it comes up in 1999 model for parts even tho it says 98 on sticker

[@louisianag]

@@JasonLefevers Is this it ? www.wholesalemarine.com/johnson-evinrude-fuel-pump-assembly-70-140-hp/?gclid=EAIaIQobChMIhuun0qfw6gIV9P3jBx0Etw9pEAQYCSABEgLHJPD_BwE

[@louisianag]

@@JasonLefevers got pump in mail what size hardware you use with those metal L brackets?? Thanks man

[@williamriley2528]

DONT FORGET to premix the existing gasoline in your boat's fuel tank...!

[@rolandmcdavid9771]

Wanting to do this bypass on my motor and was curious why you installed the new pump instead of just using the original vro with oil intake disconnected

[@JasonLefevers]

The old VRO2 pump was not holding pressure, so it had to replaced either with a standard pump or a new VRO2 pump. A standard OMC pump is much. much cheaper. If your VRO pump is working you can disable it by plugging up the oil line and disconnecting the wire connection to the pump.

[@wtfjpgmailcom]

Why not just rebuild the vro with a 30 dollar kit its easy

[@ninjagodzilla6402]

@@wtfjpgmailcom hey.i just recently purchased a boat with a 40 hp vro johnson.its not pumping fuel right & running crappy! Have u ever rebuilt that pump with a kit? Just curious! I was leaning toward rebuilding it or converting it like this fella.just curious to wich would be better? Any suggestions?

[@wtfjpgmailcom]

@@ninjagodzilla6402 yes

[@ninjagodzilla6402]

@@wtfjpgmailcom ok.i seen the rebuild kit on ebay.havent decided whats the best route But u dont have to make a brackett for a new pump.theres already holes in the head for it to mount to & pressure from that will run the pump..ust not sure what the best route is.this is my first real outboard motor & just want it to run right & last u know.

[@krackaandy]

So the vro pump and the new pump, dont need any wires?? how do they still work??

[@JasonLefevers]

Andrew Hansen The6 use the vacuum created by the motor to provide pulse to a diaphragm. The wiring for the VRO pump does not operate the fuel pump it just feeds the pump with oil. If you pre-mix this electric Oiler is not needed.

[@unsaltedlife5998]

Also the wire is a alarm circuit it lets you know if it’s running without oil. And can put your engine into safe mode, slow rpms or limp mode.

[@SoCalSeaChaser]

@@unsaltedlife5998 How is this done? Or with the VRO plug wire disconnected, does it automatically disconnects the alarm?

[@unsaltedlife5998]

SoCal Sea Chaser yes

[@shanecorbeil2270]

I’m lost, these pumps have a hole on the back of them and it is made to work off vacuum hooked up to the block. Hence the plastic spacer that comes with the pump. That hole also sucks thru the barb fitting

[@wojtekswiergon368]

Will this also work with my Johnson 70Hp from 1986?

[@scottmcmillan5085]

Worked for me. See my other posts to this video.

[@unsaltedlife5998]

I would look it up because I think the 70 has 2 hose hook up not 3 and mounts to the power head

[@scottmcmillan5085]

@@unsaltedlife5998 I have an '86 70hp evinrude and it worked on mine. It depends on if the old VRO pump is bolted directly to the motor case for the pulse or if it is supported by a bracket with a pulse line.

[@sekopaat21]

hi, did you take the pulse limiter off?

[@JasonLefevers]

Nope

[@sekopaat21]

@@JasonLefevers Thanks!!!!!

[@user-wb3dm4tm3y]

What about the vacuum hole on the back of the pump? Do you not have one or did you just block it off?

[@JasonLefevers]

This pump doesn’t have a vacuum hole on the back. The pulse is fed through one of the hoses instead as mentioned in the video.

[@scottmcmillan5085]

Jason. I have the same pump I'm about to replace my vro with. My pump has three nipples and a hole on the back side of the new pump. I wondered if the hole on the back was just for looks or had a use. So... I tried to blow air through it, and to my amazement, air came out of the pulse nipple. And air could be blown in reverse through the pulse nipple and out the hole on the back. So..... to add further inquiry. Does that hole need to be plugged? Yours is "plugged" by your bracket. The hole on the back is slightly longer than the mounting holes, so it doesn't / won't sit flush on my mounting bracket. Would like to know the answer to this before I put it on and put my motor back together. My vro was a PITA to get off as the mounting screws were behind carburetor intake and behind the starter. Don't want to have undo everything if it's supposed to be plugged. Thanks

[@Lakewooddrone]

Scott what did you end up finding out??

[@scottmcmillan5085]

@@Lakewooddrone The hole on the back had a little lip on it. I filed that level with the two mounting holes. That way it would be flush against my mounting bracket. I put a liquid gasket on and around the hole on the back. Tightened it a bit, and let it cure over night, then gave it a final tightening. The fuel pump works on the pulse of the engine. Think pulsating vacuum. One pulse pulls the diaphragm, which pulls gas in, the return stroke of the engine pushes diaphragm back, pushing gas through the pump and into the motor. If the third hole on the back is not mounted directly to the motor for pulse, then it needs to be plugged. A vacuum can not be created when there are two openings allowing free flow of air. Wish I could post pictures on here, I'd show you what I did. I do have pictures posted of iceshanty.com under Michigan ice fishing reports. The thread is "stay at home plans" and or "stay at home....... boredom". Pictures include custom mounting bracket, gasket covering third hole on back, and mounted back on motor. Note.... have not started boat yet, as I'm in the middle of changing out the tilt trim motor. Hope this helps

[@hondasilverwing]

@@scottmcmillan5085 I watched every video on replacing the VRO with a regular fuel pump and nobody explains what to do about the 3rd hole in back of the pump...except you. Thanks so much. I will take mine back off and plug that hole.

[@froggerman44]

On this pump, on the back there is a holes for mounting it to the motor, and one in the center for pulse. There is also a hose hook up for the pulse hose. Do you block off the one on the back? 1986 70 hp vro delete. Does the bracket need to have rubber to block the hole?

[@jack0439]

Hello my friend, first I'm sorry for my English, I'm Brazilian and my English is bad. Regarding the rear orifice of the fuel pump, it does not exist in this model with three hose couplings (OEM code 438559), that is, the rear orifice is blocked at the factory, so you don't have to worry about it.

[@-777OUTDOORS-]

Thanks antonio i was wondering the same question.

[@stephenschrader6087]

That's not always true. I have the OEM 438559 and mine indeed has the unplugged hole on the back, as well as the pulse line which comes capped. I had to use a solid piece of gasket to cover it up. @@jack0439

[@robertvernon6607]

I followed the direction but now the only way its runs if i pump the gas line once that gas burns out i have to pump again cant find any leaks ----help please

[@PLAYwithGregg]

Robert Vernon Crud. I’m about to do this. Did you get it working?? Use a real OEM pump?

[@ahmettuna7451]

Robert Vernon Did you find any solution? I have a same problem and I bought from china. It is not original part.

[@PLAYwithGregg]

@@ahmettuna7451 I did mine this weekend with an OMC Pump. Worked perfectly. Toss that junk, and seek a real OMC pump.

[@scottmcmillan5085]

There is a hole on the back of the pump that is connected to the pulse nipple. Not sure if its supposed to be plugged or left open to "breath". Trying to find the answer before putting my motor back together, as getting the vro out was a PITA.

[@scottmcmillan5085]

The hole on the back needs to sealed off to work properly. If it is not sealed, vacuum can not be created. If by chance the hole on the back sits "flush" against your mounting bracket, it may create a full or partial vacuum. If it starts and idles fine, that does not mean everything is proper. Trying to run full tilt where the pulse is really giving the fuel pump a work out, will tell if you have a good seal on the third hole on the back of the fuel pump. Anything other than running perfectly is a vacuum leak via the third hole on the back. Hope this helps.

[@derekchervenka605]

I currently have a 2000 70hp Johnson and it gets enough fuel wide open buy at an idle it seems to be starving. And that's after rebuilding and cleaning the carburetors. It was converted to the other pump from VRO from previous owner and I'm thinking the pump isn't pumping enough fuel at a low rpm. Anything over 2500 its fine

[@derekchervenka605]

So I'm probably just gonna replace the pump to start but had anyone else have anything like this happen?

[@RC-MC17]

Yes I have the same issue on a Johnson 90 I think it's a 2005... But yes won't idle nicely and unfortunately it starting leaking gas when trying to start.... It has already been converted to a fuel pump....Im gonna check the pulsar line and see if it's wet and if the diaphragm is worn in the fuel pump

[@miketaylorgospelmusic]

You did a great job with the conversion but at the end when you connected the hose to the new fuel pump you didn’t tell where they went. Where is the Fuel in fuel out and pulse hose connected? Also did you use the gasket on the bracket? Thanks for the help!

[@JasonLefevers]

If you check out the description ther eis a diagram I made that show the hose layout.

[@miketaylorgospelmusic]

Perfect, thanks!

[@miketaylorgospelmusic]

Perfect, thanks!

[@r.seaboats6666]

So what the heck do you do with the hole in the back where the gasket goes? 😅

[@shayne790]

What year was your motor

[@JasonLefevers]

1996

[@arcticcatkickass]

I put a regular pump on mine fuck vro! Best desicion i made for 150 bucks

[@Ocean_breezes]

Had a problem with my 90hp 2004 Johnson since I bought it new. Idling issues at the dock, stall out unexpectedly at idle Finally removed entire VRO. Installed Pulse pump and kept primer solenoid Runs better than new. I determined that entire setup , vapor chamber and vro was a poor design and prone to air leakage , mine was all plastic. It's completely unnecessary. I wish I did a video. It would have helped a lot of guys. My boat has no issues idling or stalling now. Runs great.

[@bobatbilletcreations]

You are 100% correct...I just deleted mine on a 2000 90hp. The thing was ALL plastic and leaked more oil ON the motor than it pumped INTO the motor. I will be glad to have it gone!

[@davidholt6430]

You didnt show where the hoses connects to the ports!

[@tapio525]

How about all wires?

[@JasonLefevers]

You just disconnect the wires and tuck them out of the way.

[@tapio525]

@@JasonLefevers how about oil tank buzzer? Just cut off?

[@JasonLefevers]

@@tapio525 Just disconnect it from power and it won't sound.

[@tapio525]

@@JasonLefevers awesome, thanks a lot

[@skinnerfamilymultiuseaccou7266]

You didn't explain which hoses went back were. That would be helpful for me

[@JasonLefevers]

Check the description of the video.

[@giloquendo]

Ther is a an area with 2 holes and a bolt on the middle that's the vacuum hole remove that bolt and the pump will fit right on it

[@GTtexas2009]

i bought a non vro conversion lines are not marked or instructions can you leave note on line placement pleas

[@JasonLefevers]

I show in the video where the lines go.

[@hondasilverwing]

@@alexjstring now I'm more confused than ever

[@ITGOTEVERYWHERE]

Which lines go where on the new pump?

[@JasonLefevers]

Andrew Georgoudiou If you skip to 5:09 in the video, the right hose is the fuel in. The middle hose is the fuel out and the hose in the back (on the left) is the pulse.

[@williamriley2528]

Geesh... shorten the screws Dude... and you should have used stainless nylock self locking nuts...

[@scottmcmillan5085]

Found the answer to the nagging question about the hole on the back of the pre mix fuel pump on iboats. Here it is: Re: Threaded hole behind fuel pump on my Evinrude There are 2 versions on fuel pumps for that engine. One version uses the hole at the back as pulse hole, the other version the hole at the back is plugged with a screw and gasket and a separate pulse hose to the pump. If 2 hoses to the pump - version 1. If 3 hoses to the pump - version 2. Hope this answers some people's questions.

[@jonusjonus7016]

Hey Rob, I'm so close to working out what your saying, my problem is that the last owner took out the whole vro pump assembly and basically has an electric fuel pump that works off a switch on the dash.. Mate it scares the shit out of me. So can I mount a non vro pump on a custom made plate and run a fuel line from the crank pulse outlet to the new pump

[@JustYourEverdayAverageJoe]

I have three hoses like in the video. I understand where they hookup, but I'm guessing I simply plug the back like all the other videos and reason being is because, in my motors case, the pulse tube should do both high end and low end pumping? If my logic is correct the back hole is meant for low end pump pressure and the front third port is meant for top end. I may have those backwards but that was where my head was connecting dots. And due to this, some boats I guess don't need that back hole pressure? Correct me if Im wrong. I have a 1990 Evinrude 70hp im planning to attempt this on.

[@froggerman44]

Joseph Perez so what was the verdict, I too am working on a 1986 70 hp vro delete, and want to know if I should plug the back hole? I see no other mounts or holes in the block to mount it to,

[@danielishmael6371]

You didn't go through the whole process either you should have shown the process of hooking up the hoses

[@JasonLefevers]

If I ever grow a third hand I will hookup the hoses while filming it.

[@danielishmael6371]

Make a tripod LOL

[@byrdsdoityourselfgarage7330]

It's not rocket science. There are three hoses. Lol. If you can't figure that out, you should hire a mechanic.

[@scottdempsey3532]

Didnt show much instruction

[@JasonLefevers]

If you can't figure the rest out you may want to take it to a marine mechanic instead. This video assumes the viewer can do the basics of taking off a part and putting another one back on.

[@scottdempsey3532]

@@JasonLefevers you never showed how too put it back on..lol

[@andyhoang870]

evinrude 200 hp have Alam no oil anyone can ha

[@andyhoang870]

how to make it work thanks

[@sampocock2765]

Why wouldn't you explain what fucking hoses goes where

[@YngwieLesso]

Bleh, watched this in hopes of seeing what hoses got connected to what on the fuel pump, and you skipped right by that..

[@JasonLefevers]

Yngwie Lesso See video description

[@YngwieLesso]

@@JasonLefevers yikes, has that been there the whole time?