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Author Topic:   How smokey is your Yamaha 2-stroke?

MilwaukeeWhaler posted 08-23-2002 11:23 AM ET (US)
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)
My 1991 Yamaha 250 V-x was incredibly smoky also. Espically when I as running ring free, but then cleaned up a bit after.
Brian
Gep posted 08-23-2002 12:30 PM ET (US)
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 :)
Mike
whaleryo posted 08-23-2002 12:52 PM ET (US)
My 1987 &0hp Yamaha didn't smoke very much at all. With 100:1 oil injection, I don't think it should.
Bill
whaleryo posted 08-23-2002 12:52 PM ET (US)
Make that 70hp.
Salmon Tub posted 08-23-2002 01:24 PM ET (US)
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)
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)
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)
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)
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...
kingfish
John from Madison CT posted 08-24-2002 08:23 AM ET (US)
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)
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)
1985 150 smokes like Churchill when idling--sort of disconcerting
Jay A posted 08-24-2002 11:43 AM ET (US)
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)
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)
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)
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)
"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)
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)
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?
Bob
lhg posted 09-09-2002 06:14 PM ET (US)
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)
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.
Ed
Barnett Childress posted 09-09-2002 09:10 PM ET (US)
New Yam 90hp. Engine now has 7 hrs on it and very little smoke even with double oil.
Barnett
shoctor posted 09-10-2002 05:31 PM ET (US)
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)
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)
Chesapeak,
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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Author	Topic: How smokey is your Yamaha 2-stroke?
MilwaukeeWhaler	posted 08-23-2002 11:23 AM ET (US) 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) My 1991 Yamaha 250 V-x was incredibly smoky also. Espically when I as running ring free, but then cleaned up a bit after. Brian
Gep	posted 08-23-2002 12:30 PM ET (US) 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 :) Mike
whaleryo	posted 08-23-2002 12:52 PM ET (US) My 1987 &0hp Yamaha didn't smoke very much at all. With 100:1 oil injection, I don't think it should. Bill
whaleryo	posted 08-23-2002 12:52 PM ET (US) Make that 70hp.
Salmon Tub	posted 08-23-2002 01:24 PM ET (US) 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) 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) 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) 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) 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... kingfish
John from Madison CT	posted 08-24-2002 08:23 AM ET (US) 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) 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) 1985 150 smokes like Churchill when idling--sort of disconcerting
Jay A	posted 08-24-2002 11:43 AM ET (US) 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) 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) 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) 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) "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) 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) 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? Bob
lhg	posted 09-09-2002 06:14 PM ET (US) 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) 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. Ed
Barnett Childress	posted 09-09-2002 09:10 PM ET (US) New Yam 90hp. Engine now has 7 hrs on it and very little smoke even with double oil. Barnett
shoctor	posted 09-10-2002 05:31 PM ET (US) 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) 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) Chesapeak, If ya got a buzz in the morning, who cares about the smoke, "it really doesnt matter..." I forget who sings that. :)