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Author Topic:   How smokey is your Yamaha 2-stroke?
MilwaukeeWhaler posted 08-23-2002 11:23 AM ET (US)   Profile for MilwaukeeWhaler   Send Email to MilwaukeeWhaler  
My, new to me, Yamaha 225 1996 VX is the smokeyest motor I have ever owned. Is this standard for a big 2 stroke or are the newer Yams or Mercs cleaner? No worries about West Nile on my boat!!!!~mw
OutrageMan posted 08-23-2002 12:14 PM ET (US)     Profile for OutrageMan  Send Email to OutrageMan     
My 1991 Yamaha 250 V-x was incredibly smoky also. Espically when I as running ring free, but then cleaned up a bit after.


Gep posted 08-23-2002 12:30 PM ET (US)     Profile for Gep  Send Email to Gep     
I don't think my '92 Yamaha 130hp smokes very much, but then I only have a '59 Merc 40hp and a '56 Evinrude 35hp to compare it to :)
whaleryo posted 08-23-2002 12:52 PM ET (US)     Profile for whaleryo  Send Email to whaleryo     
My 1987 &0hp Yamaha didn't smoke very much at all. With 100:1 oil injection, I don't think it should.


whaleryo posted 08-23-2002 12:52 PM ET (US)     Profile for whaleryo  Send Email to whaleryo     
Make that 70hp.
Salmon Tub posted 08-23-2002 01:24 PM ET (US)     Profile for Salmon Tub  Send Email to Salmon Tub     
When do they smoke? I have a Nissan 90 and it will doesn't smoke much at idle when warmed up, but if I run a while, then shut off and drift, when I fire it up again it will smoke for a few seconds, then nothing. I have no clue what it smokes like at initial warm-up when launched since my dad usually warms it up while I go park.
MilwaukeeWhaler posted 08-23-2002 02:21 PM ET (US)     Profile for MilwaukeeWhaler  Send Email to MilwaukeeWhaler     
It really smokes when started, warm or not, and at still idle. I have to warn people down wind.~mw
lhg posted 08-23-2002 03:02 PM ET (US)     Profile for lhg    
From what I have seen, and learned here, the big block Yamaha 225/250's are smokey as noted. But I think this model is an aberation in the Yamaha line. Someone here said the engine used a lot of oil, maybe more than 50 to 1, so that could be the problem.
Peter posted 08-23-2002 07:21 PM ET (US)     Profile for Peter  Send Email to Peter     
My 225 Yamaha EFI smokes no more and no less than any of its OMC/Bombardier or Mercury counterparts that I've ever seen so I would not call it smokey. It burns oil at the rate of 50:1 or less on average. It is true that when it is first started cold it appears blow more smoke but so did my 150 Johnson.
kingfish posted 08-23-2002 09:53 PM ET (US)     Profile for kingfish  Send Email to kingfish     
The 2001 Yamaha 2-S 225 OX66 we have on our "other" boat doesn't smoke at all at any time and uses very little oil compared to my 1992 225 Evinrude that smokes all the time and makes the entire area look like someone just ran through with a commercial bug fogger when I first start it up...


John from Madison CT posted 08-24-2002 08:23 AM ET (US)     Profile for John from Madison CT  Send Email to John from Madison CT     
My Yamaha 250 ('97) EFI does not smoke that much.

Seems the lower the temp. outside the more she smokes, but certainly not excessively.

Perhaps your oil pump is out of adjustment?

A easy fix for a Yammie dealer.

John from Madison, CT

jimh posted 08-24-2002 10:19 AM ET (US)     Profile for jimh  Send Email to jimh     
It is better to have the engine smoke too much than not enough.

My 70-HP Yamahas don't seem to smoke much at idle. I think the Precision Tune feature reduces the oiling at lower speeds.

North Beach posted 08-24-2002 11:28 AM ET (US)     Profile for North Beach    
1985 150 smokes like Churchill when idling--sort of disconcerting
Jay A posted 08-24-2002 11:43 AM ET (US)     Profile for Jay A    
Accessive smoke at warm-up is inherint on all 2 strokes. I have a Suzuki and does the same thing.When warming up I throttle-up to 2000rpm then back down to 1500rpm for about 5 seconds and that seems to reduce the smoke in half at idle.
David Ratusnik posted 08-27-2002 06:08 PM ET (US)     Profile for David Ratusnik  Send Email to David Ratusnik     
At the dock on initial start up, I just love to see that smoke. In short, I know we are going to have a good day, mechanically speaking of course. Later in the day that same smoke can be abit embarrassing in among the fancy 4 strokes and DFI's. I think the less expensive 2 stroke oils (like my Texaco Havelin sp) yield abit more smoke, but work just fine. .03 David
whalerdude posted 08-27-2002 07:43 PM ET (US)     Profile for whalerdude  Send Email to whalerdude     
Have you put in fresh properly gapped spark plugs yet?

That usually helps on my 90 2 stroke Yammie.

I only use Yamaha Oil too.

See ya soon on the water.

skred posted 08-28-2002 09:18 AM ET (US)     Profile for skred  Send Email to skred     
My former'85 Yam 70 at startup would reduce visibility for about 100 feet at the docks. When warmed up, smoked very little, but after slow speeds for a while, it'd smoke a fair puff, and then back to very little.

Bigshot posted 08-28-2002 09:50 AM ET (US)     Profile for Bigshot  Send Email to Bigshot     
"I love the smell of 2 stroke in the morning!"

But unfortunately I have an EFI 4 stroke:(

timbo posted 09-07-2002 01:27 PM ET (US)     Profile for timbo  Send Email to timbo     
I have a 1990 40 yamaha 2 stroke and only at start up does it smoke but all in all its not as bad as my friends merc.
Chesapeake posted 09-09-2002 05:41 PM ET (US)     Profile for Chesapeake  Send Email to Chesapeake     
Bigshot: Looks like Cheryl Crow may have got the lyrics wrong. Hmm... a beer buzz or the smell of 2-stroke in the morning... which do you like better?


lhg posted 09-09-2002 06:14 PM ET (US)     Profile for lhg    
Maybe the smoke is related to the other problems now associated with this particular engine.
EddieS posted 09-09-2002 07:05 PM ET (US)     Profile for EddieS  Send Email to EddieS     
Salmon Tub,

My Nissan 90 runs the same as yours, doesnt smoke until I shut it down and restart it. The smoke goes away pretty quickly though.


Barnett Childress posted 09-09-2002 09:10 PM ET (US)     Profile for Barnett Childress  Send Email to Barnett Childress     
New Yam 90hp. Engine now has 7 hrs on it and very little smoke even with double oil.
shoctor posted 09-10-2002 05:31 PM ET (US)     Profile for shoctor  Send Email to shoctor     
we also have to look at personal perception of what smokey is. I had a buddy who thought his boat was on fire as when he bought the boat it was warmed up previous to test drive and didn't smoke much. A lot of smoke varies person to person. My uncle has a 225 johnson 89 i think on his grady and you can't see your hand in front of your face and get light headed if going with the wind at idle. tough to say what a lot of smoke is from a web page. If birds are falling out of the sky and you are passing out from the fumes I would say check with dealer if not mechanically inclined. Or you can check the plugs for excessive oil use (fouled plugs)
tocobill posted 09-15-2002 11:26 PM ET (US)     Profile for tocobill  Send Email to tocobill     
Yamaha had a terrible time for a while with failing fuel pump diaphrams. The symptoms were excessive smoke (noticible at idle), a sheen on the water at idle, sometimes fouled plugs after extended idling. A quick check would be to unbolt the fuel pump(s), be sure to unbolt only the two bolts holding the pump to the block, squeeze the primer bulb. If fuel comes out of the back of the pump where pressure/vacuum pulses feed pump from the crankcase, you have a failed diaphram. Rebuild kits are available. This may not be your problem, if not just file away in FYI.
Swellmonster posted 09-24-2002 05:31 PM ET (US)     Profile for Swellmonster  Send Email to Swellmonster     
If ya got a buzz in the morning, who cares about the smoke, "it really doesnt matter..."
I forget who sings that. :)

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