Is a 2 stroke supposed to smoke? I answer the why and how you might stop it.

If you have a 2 stroke outboard boat engine and wonder why it smokes, I explain it all in under 6 minutes! I also go over what it means, and why newer motors don't smoke like older ones.
Links for tools and accessories that you might need:
Evinrude branded 2 stroke oil isn't available anymore, but this is good too amzn.to/33qZHVQ
Boesheild T-9 - amzn.to/38FYi1A
Camco winterization kit - amzn.to/3njBmcM
Chapman Piloting book - amzn.to/2SkEOq0
Dock line - amzn.to/33nKJkE
Drain plug - amzn.to/3ixVpSK
Engine fogging spray - amzn.to/3mDhoKC
Fenders - amzn.to/2F19PfC
Fender lines - amzn.to/30C6yel
Flushing muffs* - amzn.to/3mrsMZO
Fuel stabilizer - amzn.to/35IuWhV
Fuel tank (6 gallon) - amzn.to/35AYQog
Gear oil pump - amzn.to/33E7Fep
Gear oil* - amzn.to/32Ca4a8
Grease gun - amzn.to/3ccTKzO
2" hitch with drop (like mine) - amzn.to/33CBHPG
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(*Check compatibility with your particular engine)
As an Amazon Associate I earn a small commission from qualifying purchases
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#2stroke #2strokesmoke #whydoesmymotorsmoke

[@WayneTheBoatGuy]

Here's a video that covers a very important subject related to safe boating - bilge pumps!! kzbin.info/www/bejne/mGTOp6KKrZp0m7c See more of my boating education and boat tips here! -> kzbin.info/aero/PLP_T5TIhc845daMPaiEjaY8p3hgLZVOHO

[@Fajah69]

Mine smokes like crazy, but I like it because it fends off the mosquitoes.

[@WayneTheBoatGuy]

That's one way to look at it - lol!

[@jsolo7576]

😁😁😁😁😁😁😁

[@markwest4899]

Lol awesome

[@michaelgreene2920]

LoL

[@Mxl100]

Mine, too. I think I put too much oil in mine when I changed it. It started smoking a cloud, and then I ran and shut it off thinking something went wrong lol

[@Boatboy2458]

The 2 strokes may smoke and burn a little more fuel but they will never ever ever ever die!!!

[@WayneTheBoatGuy]

Yeah they certainly are durable!

[@Boatboy2458]

I have a Yamaha 150 2 stroke saltwater series 2 and they are so durable

[@user-yj2vn5ds4s]

"Самая надёжная деталь та, которой нет." Михаил Кошкин, главный конструктор танка Т - 34.

[@themgilson]

I’d rather see it smoke than hear it knock!

[@WayneTheBoatGuy]

Yeah - but when we a car smoking we say "uh-oh!"

[@darrenalkire5281]

Yep a little extra oil in the gas dont hurt! even with oil injection

[@bushmanphotos]

@@WayneTheBoatGuy cars aren't two strokes so that is like comparing carrots to pineapples

[@leroymorris6036]

You have a good day too, I appreciate the time you take to explain simply some basics to boat operation.

[@bodybuilderschickensnortht6121]

Wayne the boat. I learn so much from your channel. I have learned a lot form you. Thanks Man.

[@davidt2038]

I commend you on your effort to help people to understand about 2 strokes. Other variables that effect the smoking of 2 strokes are - quality of 2 stroke oil. Synthetic 2 stroke smokes much less and easier to break down biologically. - too rich or improper fuel to air ratio carburetor settings. - engine and cold environmental temperatures. If the engine is not up to operating temperatures incomplete combustion would take place and promote a smokier exhaust. Not uncommon with start up. People may not realize that oil is a hydrocarbon. Mostly Carbon molecules with an arrangement of Hydrogen molecules. Oil is also biodegradable and there are tons of microscopic organisms that break down oil and use it for food. The problems lies with excessive amount of oil or derivative that is spilled and can certainly affect marine life. The break down of the oil is not a very fast one unless you are using a chemical catalysts. Large oil spills from companies is a good example. The carbon/coke deposits that are remained in the cylinders, cylinder heads, rings and exhaust area are remains of burned up fuel/oil. Both are hydrocarbons. The petroleum part has been used/burned away. So, all that remains is harden carbon(not harmful to the enviroment). Carbon is found in all living things! Very similar if you were to take a bunch of logs and burn them down to ash (carbon, phosphorus, calcium, nitrogen, and etc) all of which are found in the soil naturally and bottom of lakes. The real contributors of pollution to our water systems is under regulated or non regulated industry dumping their waste products in the water system, so they do not have to absorb the cost of properly treating the contaminated water. Also the poorly supervised and poorly regulated use of some types of herbicides and pesticides that drain into the water systems from fields and irrigation systems. The use of the 2 cycle outboard motors by boaters and contaminates are an extremely minor impact to the envirnoment. It is the lobbyist of large corporations that spread that seed of deceit to get the public off their backs! Large corporations have tons of money and influence to lobby and payoff lawmakers to see things their way. The average guy/gal does not. Well made 2 strokes from the 50, 60, 70 and 80’s are still around and last for many many years with proper maintenance. So, companies can not increase sales if these motors are still around, so they create way to get rid of or lobby against the use of 2 strokes. Wayne, the above statement was not directed at you. :) I just offering your readers a different view point about 2 strokes.

[@WayneTheBoatGuy]

You bring up some very good points and I personally sit on the fence about 2 strokes. I recently just bought two of them! As far as larger sources of pollution, the Chesapeake bay is a great example since a significant percentage of its pollution comes from farm runoff from the Susquehanna river. Thank you for watching and for sharing your knowledge and thoughts.

[@530Wrangler_Bullyz]

Best comment ever about 2 strokes not one lie

[@nickb3968]

Porsche is developing synthetic, carbon-neutral fuels....I'll bet there will be some cross over potential with 2 stroke type oil.

[@ct1762]

check valves clogged as well

[@MrJoshdeuce]

Thanks to both of you for the good information. 👍

[@6ramazon]

Great video, clear and concise. You should see the smoke from my 1960 Gale 25hp!!!!

[@sailorjerry123]

Nice video. You put my mind at ease after letting my 91 force 70hp set for two years. I’ll keep tweaking!

[@WayneTheBoatGuy]

Thanks! - Make sure you replace the impeller!

[@martykcampbell4451]

Nice to hear that somebody else still has a “ Force” engine running out there. Mine is a 1985, Force 85 on a EBCO V-163 16’. Still a screaming demon.

[@jerryriggan]

@@martykcampbell4451 I have a 1986 125 HP Force Ive had it since 1990 .Still runs good, easy to work on.

[@CTRadventures]

I got the tube I think you recommended w the numbers on it, it's a life saver. I have an 1988 we just bought. He took out the injectors hence why I got the tube. He recommended the cheap super tech marine oil. I might have to look into the less smoke oil. Thanks for another great video

[@perkypat2214]

Hi Wayne nice video. One of the likely reasons your outboard smokes less is the oil injection system, or VRO pump - which is actually built into your fuel pump, it's one unit combined. The amount of oil being drawn into the fuel pump and being mixed with fuel is proportionate to the speed of the engine - the faster it pumps, the more oil is drawn in. So when you came in to dock slowly, the fuel sitting in your carburetor has much less oil in it, and that is the fuel that is being burnt when you first start your engine.

[@WayneTheBoatGuy]

Perky Pat - well said! While many people seem to dislike the oil injection system, I like it.

[@frederickkwek3772]

Thanks a lot Wayne, the videos you made are very useful for me as I have just started boating ....Appreciate it!

[@WayneTheBoatGuy]

Glad to help!

[@mattchalmers9742]

What boat?

[@martinschulz9381]

In my last ten years running my Merc 9.9 I ran a synthetic oil at about 75;1 mix ratio and the smoke and smell was considerably less.(next to nothing) For all the naysayers, In that time it didn't lose one bit of compression. I love our newer generation Suzuki four stroke, but I still miss the two stroke smell in the mornings when starting. (Also miss the oil Philosophy talk with other fisherman) My wife doesn't miss it one bit. Good video.

[@castandspear]

Super helpful! I'm thinking of picking up an old two-stroke for my new inflatable.

[@WayneTheBoatGuy]

Thanks a bunch! They're super easy motors and sometimes can found pretty cheaply too!

[@meehow3840]

My smokey 1996 Yamaha vmax 600 snowmobile brought me here... Thanks for the information !

[@WayneTheBoatGuy]

Very cool! Sometimes I wish I lived in snowmobile country!

[@pjimmbojimmbo1990]

The Sweet Smell of burnt TCW-3 is Fantastic....

[@philliptaylor5981]

Great work!!! Love the help!

[@WayneTheBoatGuy]

Glad to hear it!

[@couchna]

Thanks for the advice I'll try I'm a new owner of a 1982

[@WayneTheBoatGuy]

Congrats and thanks!

[@atreyuprincipalh4043]

Thank You for your great instructions

[@WayneTheBoatGuy]

👍

[@jasonyaj7536]

My 06 40hp etec smoked when I had a heavy load. It doesn’t smoke when I lighten the load. Is it just overloaded?

[@jacquespoirier9071]

your video is OK for 2 stroke gasoline engines, one fact is that the blue smoke is due to the vaporisation of the oil in the combustion process. In a 2 stroke combustion process, the combustion is rather a flash than a complete combustion process so the oil included in the gasoline vaporizes and make the blue smoke.Low smoke and synthetic oils helps in that department. You pour the same fuel / oil mixture ( 50:1 ) in a good condition 4 stroke engine and it does not smoke at all. I use that fuel /oil mixture when I start a freshly rebuilt automotive engine for the first tank of fuel and I never observed smoke at the tailpipe other than the first cold start. When, you squirt engine oil on a well lit wood fire, you can observe black smoke if you squirt oil agressively but never blue smoke.

[@pineyLt]

There are exceptions... Suzuki marine recommends running a 50:1 premix with their oil injected DT outboards for the first tank of fuel after an extended storage such as you’d have over winter. Essentially this prevents the possibility of oil starvation and damage if the oil injection pump has air in the lines. In my opinion, if the smoke bothers you buy a 4 stroke outboard. I think you should be less concerned about seeing smoke and more concerned about the engine not getting the lubrication it needs. Yes too much oil and it will smoke but too little and you could trash your outboard. Myself I run a 50:1 premix for the first tank of the season as recommended in my OB’s owners manual and a 100:1 premix for the rest of the year as insurance against engine damage if the oil injection pump should have an issue. The smoke is only slight at idle and cannot be seen when underway at any speed.

[@mariofernandez6988]

Thanks brother. God bless you. Good info

[@WayneTheBoatGuy]

My pleasure

[@jamescompanion4001]

Good advice 👍

[@danielgrace7408]

You helped me out thanks.👍👍👍👍

[@TheBluceRee]

Good Video, carb build up can also make it smoke. Especially if you put cleaner in your fuel.

[@WayneTheBoatGuy]

Great point!

[@trustme7731]

1994 Johnson 175. Yes, I have a big johnson. I love the often maligned VRO. It's incredibly simple and HIGHLY reliable despite what so many people believe. They just don't understand it and don't understand that they need to look elsewhere for their oil and fuel problems. You MUST go back to basics. Often it is air leaks in the system or failed lines which can be deadly to a 2 stroke as it can lean the mixture. I mistakenly replaced my VRO because I had a LOT of smoke, even at speed, and I found oil coming out of the exhaust that puddled on the floor. In the spring, in the driveway, it didn't pop off like it has every spring. It spit and sputtered and smoked like a bastard. I drained the carb bowels and pure oil came out. Now, why did it do that? Everyone blames the VRO and removes it. How can anyone accurately mix gas and oil in an on board 35 gallon tank? Well, you can't. I figured it was pressure causing the carbs to fill with oil. I found that the oil tank would pressurize and force the oil to move. The pressure comes from the oil tank not being vented and the cap being tight. Increases in temperature cause the pressure increase. I loosened the cap enough to prevent pressure build up and all problems solved. Unfortunately I tossed a perfectly good, and expensive, VRO pump that I knew had no visible damage. I see no reason to go to a 4 stroke that is highly complex with many more moving parts, much more expensive to buy, is heavier and is a pain to maintain.

[@stevengraham185]

Do you have a video of your 2 hp Evinrude on the water ? So much appreciate all your videos…Very fun to watch & educational

[@WayneTheBoatGuy]

The Evinrude 2 hasn't run since I purchased it but hopefully it will be running very soon!

[@DickMDeep]

Good content. Enjoy that working vro pump while it works. Very expensive component to replace.

[@WayneTheBoatGuy]

Thank you! Yeah I was prepared to bypass it and mix my gas and oil if it ever failed me.

[@pubbiehive]

@@WayneTheBoatGuy Don't worry, generally oil pumps last forever as long as you don't let them run dry.

[@blaccsilverstaff5484]

Hey I have a Johnson lt10 , just bought it…. Okay what process do I need to do before trying to fire it up and what I need to do to kinda check it and make sure it’s good before trying to run it….do you have a video on this?

[@mattdawson8253]

I am a boat builder in pasadena. If you ever need a hand or some advice on any videos just let me know. You make good videos

[@WayneTheBoatGuy]

Matt - please feel free to contact me under my "about" tab on my channel page!

[@andrewjernigan799]

Mine has oil injected it’s a 150 Yamaha pro v late 80s it didn’t really smoke until after I replaced the fuel pumps and now it smokes pretty bad any thoughts I’m new to boat owning

[@robertarchie6161]

Hi Wayne could you put a link for carb and pump kit for 9.8 mercury

[@rochgosselin1]

just great and helpful

[@bricehale6593]

My mix bottle says 22.7 for 6 gal of gas can u help me if I mix 2 gallons of gas I need 7.6 l of oil im running a johnson 9.9

[@vanlifeembracingdiversity5431]

Your video is the best of three. Thank you. I bought a mixing bottle. My two stroke is 50:1 for 5 litre of pertol but but the bottle can only take one litre of petrol. Does that mean I only put one fifth of two stroke oil? I feel better about the smoke when I first start it. I always keep thinking I have done something wrong

[@WayneTheBoatGuy]

You only need to put oil in the bottle - not any petrol. So if you’ve put 3.8 liters of petrol ⛽️ n your tank, you put oil in the bottle up to the 3.8 liters of petrol at 50:1 mark and then pour that amount in the petrol tank.

[@dennisyoung4631]

The Kawasaki (rotary valve 175 cc) would smoke a great deal when cold. It made a massive cloud of blue smoke when leaving in the morning, and the smoke trail would be thick and blue for the first hundred yards. After half a mile, though - the smoke was *gone.*

[@kubeanie18]

My 1992 Evinrude 70 horse outboard with the vro does not smoke at all and works quite well still with the separate oil tank

[@WayneTheBoatGuy]

Yeah the separate oil tank system probably wasn't such a bad idea after all! Mine never failed me.

[@eo98338]

Thanks wayne

[@fredericoperaro154]

Olá, amigo! Tudo bem? Adquiri um suzuki 2 stroke 15hp dt novo. A recomendação é apenas para utilizar óleo "suzuki cci tcw3". Nao há qualquer informação acerca do tipo de óleo, se sintético, semisintético ou mineral. Posso utilizar óleo tcw3 100% sintético? A proporção ainda pode ser de 25:1 no período inicial e após, 50:1, no citado óleo sintético? Um abraço do Brasil e obrigado

[@NEWMOONER]

THANKS!!!

[@bluegrassrle]

Wayne nice video.

[@alexfrias2788]

Thanks

[@UltraMagaFan]

We have a 1999 Johnson 150 Ocean Pro. It's a great engine. I personally don't mind the smoke. The only reason we are replacing it with a 4 stroke Yamaha when it quits is because the thing devours gas. It's terribly inefficient. We put 20 gallons of gas in our boat and it barley lasts me a weekend. Our friend has a 2016 Yamaha 150 and that same amount of gas would las him 3 weekends. We have similarly sized boats. Mine is 19'6" and his is 20". We also use our boats for the same amount of time.

[@WayneTheBoatGuy]

Yeah when I switched from my 19 ft with this 2 stroke Evinrude 90 to a 23.5 ft with a 5.7 I/O I seem to use less fuel as well.

[@ct1762]

at wide open 2 and 4 strokes burn the same, everything equal. its midrange and below that 4 strokes really shine.

[@VunUn-qo5ws]

Awesome thank you

[@OGMoses_]

I have a 2018 Yamaha 130hp it’s still like new and it smokes a lot on start up then not so much but I’m impressed with your old evinrude I didn’t see any smoke

[@WayneTheBoatGuy]

It was a warm day and I use the 'low smoke' 2 stroke oil!

[@HigherSelph]

Thank you for this. Currently breaking a new one in and was wondering… also, is it normal for the water to get gross? I’ve been using a large trashcan and have 6.5 hours on it at this point. Everything is going great, but there appears to be a lot of oil in the water. Not even sure where it would come from…

[@WayneTheBoatGuy]

I had an older Evinrude 6 hp that would make the barrel very oily. The exhaust exits into the water, so the oil from the motor gets in the water, and some motors also might leak oil around the prop seal and lower unit. I also have a 2004 Mercury 2.5 two stroke and it doesn’t mess up my trash can much at all. If your motor is actually new, it might only be cleaner after break in - but I have never owned a ‘new’ one.

[@HigherSelph]

@@WayneTheBoatGuy Makes sense, thank you. And now I understand why most of the lakes around here don’t allow gas motors…

[@Barbedhookfishing]

Great Video thanks. Ive just purchased an old 90's Evinrude 4hp 2 stroke engine, can i run it on 'low ash 2 stroke API TC oil or am I better investing in something that says Marine on the bottle? Thanks Arron

[@WayneTheBoatGuy]

From what I understand, the reason to buy marine 2 stroke oil like TCW3 is because they have corrosion inhibitors and are designed for water environments.

[@Barbedhookfishing]

@@WayneTheBoatGuy Good man thanks. I'm new to this game! Just bought my first inflatable Rib and engine. Can't buy marine oil in my town so will go online 👍

[@kevinmccarey5015]

Hi Wayne, I found a nice boat with a (2) stroke motor. I really really wasn’t thinking (2) stroke. Should I stay away from this idea. Thank you

[@WayneTheBoatGuy]

That’s a tough call. Depends on the horsepower and setup. My old 90 had oil injection and wasn’t much hassle for me. If it’s a small one, and you don’t have any other 2 stroke motors, you’ll have to assign a fuel jug of mixed fuel for it and get a mixing cup. If you’re buying used and don’t care for the 2 stroke you can always sell it and replace it with a 4 stroke.

[@carlosronquillosr.9523]

Thank you. I own an evinrude 150 e-tech. It smokes as you mentioned. Your video set me straight thinking I probably had an oil leak I could not find for the life of me... lol. Cron

[@WayneTheBoatGuy]

I’m so glad! Please subscribe if you haven’t already! I love making videos that help people out!

[@YardworkWithJohn]

My mercury is oil injected and I still get tons of smoke. Clouds when I start it up and still a lot while running. I guess that suggests there's a problem with the auto blender. But also mine's a 90hp so it probably does more of everything.

[@michelnadon6243]

i beleive my 98 evinrude 90 hp 2 cyl. smoke more since a truck broke my propeller. how do i test the pump oil/gas ratio

[@WayneTheBoatGuy]

If it is oil injected, it might be running too rich, but I don't know how to check. Many people disable or bypass the oil injection system in these older Evinrudes so that they can be sure it's running the right mix by manually mixing their fuel.

[@lumberpilot]

I have an Evinrude 6hp for my sailboat that, as far as I can tell, has steam and air bubbles coming out of the tell-tale instead of a good flow of water. Not sure what to make of it. Supposedly has a rebuild carburetor and a new fuel pump.

[@WayneTheBoatGuy]

It probably needs a new impeller and hopefully it isn't too late!

[@ct1762]

gas n oil mixed so it smokes. However, once it gets up to operating temp, it should BARELY smoke. if it does clearly smoke, oil mix is to heavy or the OMS/VRO pump has a torn diaphram, dumping excess oil into the crank case. You could also get loading up if the check valves (1980 and newer for these crossflow v4/v6 motors) are clogged or faulty. fuel puddles in the reed blocks after idling.

[@waylonmccrae3546]

If you see it a SMOKIN ' ,,, then she will keep on a STROKIN ' !! 😉👍

[@Midwest..]

Clean carbon buildup with seafoam? 😎👍

[@certifiedoutboardtech2382]

You're partially correct, but a few points to note. 2 stroke outboards vastly out number 4 strokes, that's because of many many years of 2 stroke availability. Now new motors- of course 99% 4 stroke. Also you are too caught up with oil. Direct injected 2 stroke motors burn oil and don't smoke at ALL! It's fuel, or excess fuel, in combination with faulty cooling systems that mostly contribute to exhaust smoke. 'Hope this clears it up some. Oil is a contributor , but usually in cases where people are mixing fuel/oil and use too much oil (injection oil pumps are variable and usually deliver oil around 80/1 at idle. - If you mix yourself, you'll always have more oil than needed at 50/1 except at high throttle.)

[@samtate1260]

50 to 1 mix but if you have a 1956 30 hp Johnson it’s 32 to 1 and the owners manual says to use 30 weight car oil one quart to 5 gallon of gas ⛽️

[@drumminsonlive9199]

People never run their fuel tanks completely dry and when they refill they usually put in more oil than required and over several tanks the oil to gas mixture is way out of wack and you get more smoke. The good thing is that the engine can handle the over oil issue unless you just run the engine on low idle or just troll around most of the time so you need to shake up the fuel tank and run the engine at higher rpm’s occasionally to clean out the settled oil from the carburetors and learn how to properly add the proper amount of oil when refining. I always use a fuel treatment and premium gas (non ethanol when available) and I am not concerned one bit about going 30 miles offshore with a 24 year old engine.

[@alfredofernandez8036]

I have a Yamaha two stroke HPDI and it does not smoke at all. The evinrude Etec do not smoke either. It is the older two stroke engines that are carbureted and without oil injection. Usually the user mix is the problem too much oil in most cases.

[@sbxxxiii]

You should mention that by using synthetic oil, you can use a little less oil. Some people use half as much, but that seems risky. Still, if you use slightly less than spec, it's definitely less smoky, and still plenty safe.

[@jakebanister170]

Do 2 stroke outboard motors also expel oil out of the motor as it is running? We bought one the other day and the previous owner told us it was smokey and it was. We put the part of the motor that sucks in water to cool the engine in a barrel of water as it was running and after about 30 minutes we started noticing oil in the water coming out of the motor exhaust. Now this motor was pretty bad smokey which may have meant that the previous owner used too much oil or it had been sitting for awhile. We put some seafoam marine motor treatment fluid in with the fuel to try to clean it up. Have you seen a lot of oil come out of these motors when they have been sitting for awhile? There's not a oil leak inside the motor we checked for that it seems to be coming out of the exhaust.

[@WayneTheBoatGuy]

Yes. The problem with 2 stroke engines is they "burn" oil with the gas and often they expel a little oil out of the exhaust. This is why 2 stroke outboards are not sold in North America any more and why they are banned on some lakes and reservoirs. They can be tuned and the fuel ratio mixed perfectly so they expel less oil through the exhaust - but this is the nature of a 2 stroke.

[@jakebanister170]

@@WayneTheBoatGuy Is there anyway to determine if your motor is expelling too much oil? I know that's a relative question. is there anything else we can do to try to clean it up? Like I said we are running Seafoam marine motor treatment fluid with our 50:1 fuel to try to clean it up.

[@WayneTheBoatGuy]

@@jakebanister170 The treatment you're running is probably adding some oil, and if the prop seal in the lower unit is poor, that could be adding oil as well. How old is the outboard? My 1960s and 1970s ones are all worse than my 2003 Mercury 2 stroke.

[@jakebanister170]

@@WayneTheBoatGuy I believe its a 1998 Johnson 115 motor

[@jakebanister170]

@@WayneTheBoatGuy Yes the motor was made in 1998

[@ussweeneyd]

So, if you have auto lube and you say it’s important that your oil/gas ratio is accurate, what do you do to test the ratio ?

[@WayneTheBoatGuy]

Because mine is automatic, I trust the system unless it starts smoking excessively or I see that my oil level isn't going down. When manually mixing oil, having too much oil in the mix will make it smoke more.

[@ussweeneyd]

@@WayneTheBoatGuy thanks Wayne; the reason I’m gun shy is because I just finished up a full crank shaft up rebuild of a 94 Suzuki DT 100 that had suffered a catastrophic oil starvation failure causing the top two rod bearings to disintegrate. I have no history to go on so have to assume somehow, that the auto system failed. I’m sticking with manual mix as I can start with the manufacturers recommendation of 50:1 and go from there. Thanks again. Dave.

[@lorettacaputo6997]

With 2 stroke engines routinely fouling plugs due to the nature of the engine design, do you notice increase smoking of the engine as the spark plug approaches the need of replacing due to fouling?

[@WayneTheBoatGuy]

I never thought about that potential aspect - I doubt it’s a noticeable difference unless the plus isn’t actually working. Any excessive smokiness is usually too much oil in the mix or improperly adjusted carburetors.

[@kevinmchale5660]

@@WayneTheBoatGuy I highly recommend the expensive platinum spark plugs especially for 2 stroke outboards. Well worth the extra money. They won't foul up and have to be changed often like normal ones. They are super hard tip on them and they last for years. Saves a ton of problems.

[@WayneTheBoatGuy]

nice tip!!! Thanks!

[@crunchycrispybacon]

Two strokes do not routinely foul spark plugs. That’s fake news.

[@coachrandall8190]

Hello, mine is oil injected also and it smoke alot. how to check to see if the it is injecting to much oil?

[@WayneTheBoatGuy]

Not sure how to check that. Many people don’t trust the oil injection and bypass the set up to premix the gas and oil themselves.

[@coachrandall8190]

@@WayneTheBoatGuy I've seen videos of bypassing. Do you know how I would check the remaining gas in the tank to see how much oil I need to mix in the existing gas in the tank, if I after I bypass it?

[@WayneTheBoatGuy]

@@coachrandall8190 the easiest way would be to fill the tank with gas and if it’s a 6 or 12 gallon tank, add the right amount to treat a whole tank - plus a little extra just in case!

[@coachrandall8190]

@@WayneTheBoatGuy Thanks man.

[@philm2175]

Ooo i ser thank for the tip.

[@brucedavies7936]

I mix my gas and oil at 40 to 1, the reason is at high speed the engine needs more oil, i have a 1988 Evinrude 60 hp 3 cylinder that i go fishing once a week, it still has factory compression in each cylinder, it does not smoke much at low speed.

[@WayneTheBoatGuy]

Cool - That seems to be working very good for you!

[@ct1762]

that motor is 100% fine at the factory recommended 50:1. unless you rev it past 6400rpm or so its 50:1 is more than enough.

[@Bware1966]

Have you tried the Swedish "invention" TRIBORON instead of oil? Quite expensive but I run my old 2-strokes smoke free and a lot better(less worse) for the environment. I have used it since 2015 and will never go back to oil.

[@WayneTheBoatGuy]

I have not tried that but it sounds interesting!

[@mrbill1683]

there is a container to help you measure oil for any amount of gas, like 5 bucks at walmart. everyone with 2 strokes needs one.

[@WayneTheBoatGuy]

Those are very useful! Mine was oil injected so I never needed to measure the oil.

[@androidman73]

@@WayneTheBoatGuy I agree always kept one in every boat i owned .

[@thecentralscrutinizerr]

I'm still using a Yamaha 2 Stroke 150 built in 1998. Runs like a top. 50:1 is a little too much oil for it. I'm using 75:1 ratio. Yamaha recommends 100:1.

[@WayneTheBoatGuy]

Wow - that’s a very light oil mix - probably smokes less too!

[@michaelgreene2920]

Yamaha sell's engine's..... think about that too....

[@finno123456]

I have a 1975 evinrude 35hp i have 40:1 mix when cruising. when bombing up the lake its 50:1 40:1=20l of petrol to 500ml of oil. 50:1=20l of petrol to 400ml of oil. Tcw3 oil only never ever use ordinary two stroke oil designed for air cooled 2 stroke engines. Outboards run cooler then air cooled. If you use ordinary 2 stroke it will be over cooling the engine. And the same for 4 stroke outboards use only marine engine oil. Do not worry if a 2 stroke smokes. Be worried if she doesn't smoke. My old evinrude smokes on cold but when she warms up she stops puffing only very little smoke. Always use fresh petrol after 6 months petrol goes off. Always install a inline fuel filter to trap dirt from the petrol can. Also ratios defer to different engines

[@WayneTheBoatGuy]

That's the first I've heard of using different mixes based on how you're running the motor but I get the concept. I'm sure you've also seen your fair share of really smoky 2 strokes that are clearly running too much oil in the mix!

[@cesarmartinez5259]

👍🏾

[@arthursmith643]

Your engine ratio of gas and oil is a ratio for high rpms. You need that ratio to lubricate the engine at high rpms. If you idle that will not burn off the oil and it will smoke. If you just troll along at low rpm you can use less oil in the ratio of gas and oil.

[@WayneTheBoatGuy]

I had not heard that before.

[@adriantancayo1335]

From Hawaii, That makes total sense 👌..

[@crunchycrispybacon]

@@WayneTheBoatGuyit’s true what he’s saying. in premix the ratio covers high rpm use but at idle it’s too much oil therefore it smokes. That’s why they came up with oil injection, it varies the ratio according to engine rpm.

[@mattdawson8253]

Its a good old pasadena maryland boat. Thats why it smokes. Grays creek boats are the best

[@mikeboston421]

fwiw the only oil they sell these days is tcw3 for regular two strokes,. ie low smoke

[@WayneTheBoatGuy]

Yeah but if we use too much of that they will smoke more than if we use the right amount.

[@jiffibay]

DFI two stroke engines, do no mix oil and gas .. gas is at high pressure injected directed in to the cylinder , right on top of the piston.. the new G2 Evinrude are actually considered by EPA less contaminant than the 4 stroke

[@thruitallauto2538]

Do you use ethanol gas in yours

[@WayneTheBoatGuy]

Yes.

[@alfredofernandez8036]

Any ethanol in two strokes is a killer. Try to use REC 90 it made a big difference how my Yamaha HPDI ran.

[@Harlanmote]

Cheap? I’m still running a 1985 Johnson 40Hp that came on my 1986 Aluniacraft Maverick 18’ that fires up one the first time hot or cold. It’s been taken care of and serviced regularly.. most outboard motors are designed to last 1,500 -2,000 hours. 4 strokes are costly to Maintain. Triple what a 2 stroke cost to keep running.

[@SebSar-ef4zj]

Others should watch this fellow and learn how to produce an informative video without the irritating background music or too much gas bagging. Thank you very much for your direct to the point video . **A*A*A*A*A**

[@beausw]

Power to weight the 2 stroke is far superior. They can get the revs higher with no valves, and also generate power on every rotation instead of every second rotation.

[@jamesa6272]

I have had 3 2 stroke jetskis in the past. Just started my 4.5 evinrude in a garbage can with water. Man the can was filled with oily water. I actually don’t know how 2 stroke outboards or jetskis are even allowed on water where people swim 🤣

[@WayneTheBoatGuy]

Yeah they aren't exactly 'clean'

[@mrzif0013]

new engine to mme mariner 4 hp 2 stroke no water stream lots of smoke been sitting a winter or more.??

[@WayneTheBoatGuy]

Probably needs an impeller or the tell tale could be clogged.

[@gerard2620]

@@WayneTheBoatGuy Sorry for the dumb question...what does the impellor do ? what is a tell tale ? Thanks !!

[@WayneTheBoatGuy]

@@gerard2620 not a dumb question at all - the impeller is a little rubber propeller-like thing that is inside the engine assembly? Often in the lower unit. It rotates as the engine is running to pump river water through the engine to cool it. The tell-tale is an outlet or little tube where some of that water runs out. When the engine is running, there should be a stream coming out - usually near the back and down low on the upper engine housing.

[@gerard2620]

@@WayneTheBoatGuy Thanks Wayne, makes sense !!

[@magnumbiker30]

Yamaha enduro 9.9 oil Ratio 50:1

[@jack9609]

Really !!

[@stevefine1704]

i calculate 15.36 oz per 6 gal.

[@JCASTELLUCCIOJR]

One pint outboard oil to 6 gallons of fuel!

[@caseysaunders2137]

#4 - if you have bad coil pack(s) on a direct injection you'll see more smoke than normal.

[@davidbrennan5]

I mix my oil 20 to 1 it keeps the flies away.

[@WayneTheBoatGuy]

I bet it keeps a lot of things away!

[@codyrivenburgh7645]

If I buy a oil injected 2 stroke the first thing I do is rip the oil injection tank off and block off the pump and mix my own.....and if a 2 stroke smokes u know it's got oil....I always Mix a little oil heavy for longer life....yea it may smoke a little more at idle...but atleast ino it's got plenty of oil to not burn up

[@WayneTheBoatGuy]

That's a common approach that has probably extended the life of many of these old motors!

[@joshradford1989]

I’ll deal with the smoke to get the torque. 4 strokes and much bigger to produce the same power. 2 stroke means 2 smoke.

[@searider9922]

50:1 equates to 3.80 gal of fuel to 80 ml of 2 stroke oil....

[@ghzkhz1770]

my bass boat stratus 201 pro with Yamaha 250 Vmax HPDI 2 stroke had a oil tank fast boat padded carpet now i have a 23ft nautic star and offshore fish trolling deep drop the works and WAIN THE BOAT GUY if you are in south Florida PM me and we can set up a day offshore or use my trolling motor and catch snook and tarpon in the groves vhf ch 16 and 72 or 16 and 9 call rock & reel

[@WayneTheBoatGuy]

Oh how I wish I were in South Florida these days!

[@youdonthavetoreadthispost.5850]

Synthetics like Amsoil smoke less, a lot less. Most smoke on a cold start. Let them warms up.

[@jasonhodkinson9297]

Ye is does

[@dsciarrino3663]

Smoke is Good 👍

[@josephm40]

I love the smell of 2 stroke smoke in the morning.

[@fishordietv6614]

Mine smokes a lot but it's cuz I run rich. Learned a lot about carbon build up and how bad it is. So next time your old man says it's better to run it rich then lean look him and tell him proper mixing runs better then both. No matter what anyone tells you running rich kills outboards!

[@WayneTheBoatGuy]

Yes it does - and I still see and smell plenty of old smoky motors some days!

[@healthizwealthtrucker7845]

Do older Motors pee ? I have a older Johnson 55 hp 98 I think

[@WayneTheBoatGuy]

Yes. Its usually on the right side (when standing behind the engine at the prop) - My 85 Evinrude and 71 Mercury both have the pee tubes.

[@healthizwealthtrucker7845]

@@WayneTheBoatGuy I just found out they all don’t have one the older boats some people had to put them on my boat is cooled out the exhaust port I think that’s what I was told

[@nerd1000ify]

@@healthizwealthtrucker7845 Most outboards send the vast majority of their cooling water out the exhaust- if they didn't they'd soon burn the paint off the leg! It also helps to muffle the exhaust. The 'tell-tail' gets maybe 1/10 of the flow, it's only there so you can look back to check if your water pump is working. Around here we have mud wasps that sometimes build a nest in the tell-tail outlet and block it off- best to put a piece of tape over it when the engine is being stored. If your engine hasn't been serviced in a while it might need a new water pump impeller, they're made of rubber and usually dry-rot after a couple of years. Also change the lower unit oil.

[@quavolaz6826]

My stroke mixes It's oil by itself and it smokes a whole lot

[@WayneTheBoatGuy]

Are you using the right type of oil? Does it smoke a lot once it's up to operating temperature? Some of them seem to smoke more until they're warmed up.

[@mattbrown5511]

2 stroke engines should smoke. Some are designed to smoke more or less than others. One reason a 2 stroke may have excessive smoking is having too much oil in the fuel. Many places will sell pre-mixed 2 stroke fuel in cans.

[@cosmic_parallax]

smoke means motor no go boom