How to fix a rough running four stroke outboard

Diagnosing a rough running four stroke

[@krisjcleveland]

Worth the effort and time to glean information needed…thanks for sharing

[@sacju6517]

Great video. My 8hp runs rough. I upped the idle a little but same issue. Now I know what else to check on it.

[@Lzz79326]

Clear and logical explanation, thx a lot buddy!

[@scotthunt187]

Should be like a urine stream not a kidney stone stream. 😂😂😂 That analogy had me cracking up. Great video man!

[@RonnieTucker1]

I thought he said 'kid stoned stream' :D

[@josteincarlsen2905]

Thanks! Going to try that carb clean tomorrow! My Suzuki 9,9 4stoke also goes like shit

[@johnnybehealthy5720]

Awesome show and tell video. I believe I have same exact issue with my 4 stroke 6 HP

[@weaselrodent7131]

wish it was a EFI f60 runs bad but 2015 f60 not alot of info with this motor, good video. happy new year

[@MrNegative57]

Ok video, would have rather seen removal of the carb, disassembly , cleaning, drying and install instead of difficulty in starting, climbing in and out.

[@sdichampion]

You live up to your name

[@wedfelt]

Hi, great video. Question though, how did you know the correct setting to reset the carb mixture ?

[@brianhiggins7360]

Excellent video- Exactly the issue i am having on a 2105 9.9 Yamaha. Do you happen to have one that shows actually removing the carb, float and pin?

[@neillee3793]

Good work - got the same motor, had the same issue. Also has issue with emergency kill switch perioidically killing the engine - i disconnected the kill switch temporarily and no issues since. Ever hear of this issue?

[@SuperDiagnostic]

Nice one 👌

[@cyrielgaemers]

I like this!

[@shadyfieldhomestead1974]

I don’t know about the garden hose issue and hurting the impeller. I couldn’t even use our water because our pressure was less than 20 psi. I brought the psi up to just enough that the engine will piss while running, up to 55 psi. I need all of that pressure for running my engine.

[@fishhunt9874]

My 2014 9.9 has blown the same water pipe 3 times. This hose springs a leak and sprays a mist of salt water that gets sucked into the carburetor. The engine starts running a little erratically, and then eventually will not run and becomes a hard/no start. I’ve had to remove and clean the carburetor three times. It clogs completely with salt, about a quarter of a teaspoon in the fuel bowl. All of the fuel jets clogged with salt. I only replace with genuine Yamaha parts, but in this case, the same part keeps failing. My next replacement will either be a stainless steel pipe with rubber ends for connections. Or a heavier duty, braided piece of fuel hose instead of the thin rubber OEM “pipe” supplied from Yamaha.

[@WogChilli]

Do you have a video on setting idle and mixture. Thanks

[@mtmonesf]

What should you do if you had a stuck valve ?

[@TheBluceRee]

Great fucking video. Thank you from starting from the beginning for all of us newbies. This may very well help my problem.

[@TheBluceRee]

Do you have a video that goes past this video. Lets say it WASNT the carburetor. Where do you go next?

[@johngraham8052]

@@TheBluceRee Are you sure it isn't the carb. If you can get the engine running on easystart, petrol you know you have spark and compression. If you have fiddled with the carbs it is best resetting the high and low jets to factory speck (turns out) and then adjusting from there to get a crisp idle and good pull. Plenty of free manuals on-line. I followed the Dangar marine videos and learned how to fix everything on my 2-stroke Yamaha 25. Did you check the compression and what engine?

[@TheBluceRee]

@@johngraham8052 it was a hole in a fuel hose. thanks for getting back with me though.

[@johngraham8052]

@@TheBluceRee Modern petrol degrades hoses. You will often see black buts in the fuel filter because of this. Always worth carrying a spare. Air leaks at the carb are also a common problem. Still learning myself.

[@glatisant74]

Any useful to verify the pilot screw position against factory spec, before taking the carb down? Cannot that cause bad idle, if wrongly set?

[@PN_48]

We’ve got this same engine and are having idle problems. What controls the air intake butterfly? I see some 9.9 Yammy’s have a link to the throttle, but we don’t and just seem to have a solenoid....

[@dbarr8261]

Does this motor have an air and fuel filter? If so why didn't you check that first?

[@timwalworth9059]

How did you set the carb idle and mixture?

[@NovoGold]

How do you expect it to start with those short key bursts..?

[@yeslawrence]

anyone just pop that metal plate off while the carb is still connected to the motor and just clean that part of the carb/jets with carb or brake cleaner? seems like that might work though if its not too bad and just needs a little clean up.

[@zanepin1]

I'm looking at a boat right now he says it has idle issues i wonder what it could be I'm kind of hesitant to buy it

[@LongDistanceSailor]

You might also find this video useful. Goes into a bit more detail. kzbin.info/www/bejne/a5W1oIOCr76jj8U

[@stevenichols4060]

In short durations, without water, would it tear fins off water pump impellar?

[@johngraham8052]

It's bad. Impellers are a replacement item and many people replace each season. If you want to make yours last don't but I would recommend learning how to replace it anyway, it's easy. Get a large drum and fill it with water and put the leg in if you don't want to buy the correct attachment. If you ran for 10 seconds without water you could overheat and damage the head.

[@stevenichols4060]

Do you have video just pulling off carb? Its straightforward. I just want to know what tool can quickly unscrew the second bolt thats behind all the crap in way?

[@watercool5]

An extension on your socket wrench is all that’s needed.

[@stevenichols4060]

@@watercool5 would be awesome if you could do the video because I have a long extension but cannot line it up because the plastic air intake is directly in line with the bolt head. I even tried that pivoting head socket but no good angle to use it either. Every time I have to use wrench from side and back it off at micro intervals and it takes way too long.

[@watercool5]

Steve Nichols kzbin.info/www/bejne/mIazgmide7FphNU

[@brendanryan6363]

@@stevenichols4060 I'm having the exact same problem. Did you ever get a solution for this mate?

[@stevenichols4060]

@@brendanryan6363 Nope. Nobody provided any advice. My Yamaha is starting run rough again so i am going to have to pull carb pretty soon and dreading that bolt. If i remember right you can get a little space if you remove the black plastic on top. If i remember theres about 4 hex head bolts to remove that plastic.

[@bhdlp]

How did you adjust the mix and idle?

[@kdl0]

same question here ;)

[@jrgenrasmussen8840]

My 15 hp is from 2018 and when i give gas it dies for half a sec then take gas what is the problem. Its done it since New

[@ReinierS]

Means your mixture probably is too rich.

[@daha7864]

U and Timk should get together 👍🏻

[@chriseisele9969]

So is it better to run in 50 gallon barrel so your water pressure is lake realistic?

[@CAPTAINWILLY]

The point I was trying to make is that your waterpump is disgned to draw water. Not get forced water. Applying excess water pressure can damage your waterpump and or internal standpipe

[@chriseisele9969]

@@CAPTAINWILLY thank you for your information

[@larryhart4880]

Plugs is almost always easier then a carb rebuild

[@steveholley9508]

You are from Oregon so am I'm .

[@CAPTAINWILLY]

Hell ya brotha

[@ronmacdougall9612]

I wished you went through the whole procedure,good video though

[@jimmyg3855]

Can you be a bit more specific on what a dwell meter is?

[@tonisarsero4499]

PS CAN YOU PLEAS HELP ME

[@larryhart4880]

Ah yes a extra set of hands is always better

[@JohnWick-ii9ru]

Why brake clean? And not carb cleaner?

[@CAPTAINWILLY]

Brake clean evaporates faster. It really dosnt matter tho. Could even use moonshine.

[@bentramell729]

@@CAPTAINWILLY hey captain willy when you did the spark test and compression test did you have the water running on the muff cuz it didn't look like it in the video. Just trying to confirm if water needs to be running for those 2 operations, I would assume so but not sure.

[@CAPTAINWILLY]

@@bentramell729 so. It wouldnt hurt to have water on it. But heres the thing. The impeller needs water for lube amd the motor needs water to keep from over heating. So really if water was just on it. Like within the hour. Cranking for test with no water wont hurt. But cranking for test on a motor hasnt seen water in days or longer could damage the impeller.

[@bentramell729]

@@CAPTAINWILLY okay, that cleared up my confusion thanks for that clarification.

[@hikenmikes8262]

...if at all possible, don’t own a motor with a carb.

[@larrabeejl]

NEVER RUN MOTOR WITHOUT WATER EVEN ONLY FOR A COUPLE OF SECONDS.

[@CAPTAINWILLY]

Agreed. Did I?

[@larrabeejl]

@@CAPTAINWILLY no just someone was asking in the comments if it was ok to do.

[@bentramell729]

@@CAPTAINWILLY I have a 2 stroke mercury 90 hp 88 model and when I bought it the guy put muffs on it, didn't know about too much water pushes rather than pulls, but it was running seemingly good after alot of tries at a hard start, forward and reverse wide open for a few seconds and it was peeing out the tale tale didn't check it at idle though the guy was real fast with the throttle changing directions. So I'm like cool ill buy it then but I get it to the lake, it would start but not idle had to push the lever for idle up but it still wouldn't stay running died after a 5 10 seconds and no water was coming out the tale tale, I wondered if it was far enough down into the water but lot of things going on and people everywhere stressing me out so I just raised it back up and pulled out. Everybody keeps saying its a water pump but im not convinced. Any advice on the situation I just described?

[@CAPTAINWILLY]

@@bentramell729 no water from the pisser 9.9 times out of 10 its a failed or weak or permacurved waterpump impeller. Needs replaced. Start looking up videos on lower unit removal. Not idling 9.8 times out of 10 is dirty gummed up idle circuit in the carberators. Sounds like you need to remove it. Take it apart and clean it. As far as advise on crowded water. Im right there with ya. I cant insure my sled and streeses me out big time when im stuck navigating around 100k$ boats.

[@bentramell729]

@@CAPTAINWILLY thanks for the info, ive been researching the removal and reinstall process for hours as well as the right impeller for my engine but coming up bupkis, cant seem to find a video or proper part number at all its getting frustrating. 88 mercury 2 stroke 90 hp outboard, ran the serial number and model number and nothing will give me a straight answer smh. Im certain I can do the impeller procedure if I could just be sure im getting the right impeller, its just removing the lower unit bolts sliding it off with drive shaft removing the water pump cover and reinstall turning it clockwise to make sure the veins spin the right way as you reinstall the cover, the other part ill have to figure out with the carb issue afterward. Idk bought the boat because I thought it had a good engine, totally gutted the interior and redid the entire thing top to bottom myself with new wood and vinyl in less than 3 weeks and here I am doing exactly what I didn't want to do, deal with engine problems. Spent months searching for the right boat before I bought one and thought I found it anyway, thanks for responding and listening to me whine. Lol

[@Opelmannen1224]

Now I know where to bring my outboard if I want my impeller f***ed.

[@CAPTAINWILLY]

Apparently you skipped around in the video. Or wasnt paying attention. I intentionally showed steps to take to insure a healthy impeller. Time stamp the. Video where i was f***king the impeller.

[@Judith-tg5wb]

M

[@Mr.Monta77]

Or N

[@timbowles6]

Ask the OP

[@mcdls5]

You are so wrong. It's ALL about Bubba. All about Bubba.

[@eddieabraham3341]

U should rename this video REPAIR FOR IDIOTS!!

[@jackgresch8663]

You talk to much

[@CAPTAINWILLY]

Thankyou

[@tonisarsero4499]

I have a pull start outboard motor and I wont to fit a electric start motor ( SERIAL NUMBER 0N045091) MERCURY MARINE ( 2055 ME30 EMLH ) ( 30 HP )