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Discussion Starter #1
Last summer I noticed my 2016 Grizzly was using some oil. It was enough to concern me, so I started watching it much closer. When I went to the Black Hills in September, it fogged up the parking lot when I started it to take it off the trailer. It has blown out blue smoke a couple more times at start up since then.

I talked to my dealer, and at first they said they hadn't heard of any issues with the new Grizzlies using oil. I asked them to talk to their Yamaha Rep, who did acknowledge some issues. My machine is a year out of warranty with 1700 some miles on it, but the dealer agreed to check things out and contact Yamaha. After the dealer looked for signs of dirt getting past the air cleaner and finding none, they verified the compression was good, and the engine passed a leak down tested. At this point Yamaha authorized the dealer to open up the top end and send pictures of their findings. They also had me answer a bunch questions about oil consumption, brand of oil used and viscosity. (I used Yamalube 10w-40) Last week Yamaha asked the dealer for additional pictures and information.

It took some time, but I got some very good news this afternoon. Yamaha informed the dealer they would cover the repairs, parts and labor. They instructed the dealer to redo the top end, replace the valve seals and piston rings.
 

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Last summer I noticed my 2016 Grizzly was using some oil. It was enough to concern me, so I started watching it much closer. When I went to the Black Hills in September, it fogged up the parking lot when I started it to take it off the trailer. It has blown out blue smoke a couple more times at start up since then.

I talked to my dealer, and at first they said they hadn't heard of any issues with the new Grizzlies using oil. I asked them to talk to their Yamaha Rep, who did acknowledge some issues. My machine is a year out of warranty with 1700 some miles on it, but the dealer agreed to check things out and contact Yamaha. After the dealer looked for signs of dirt getting past the air cleaner and finding none, they verified the compression was good, and the engine passed a leak down tested. At this point Yamaha authorized the dealer to open up the top end and send pictures of their findings. They also had me answer a bunch questions about oil consumption, brand of oil used and viscosity. (I used Yamalube 10w-40) Last week Yamaha asked the dealer for additional pictures and information.

It took some time, but I got some very good news this afternoon. Yamaha informed the dealer they would cover the repairs, parts and labor. They instructed the dealer to redo the top end, replace the valve seals and piston rings.
All I can say is how amazing. You have an awesome dealer, and great experience with Yamaha. Way to use Yamalube as to not give them a reason to say it's not their problem. This is a great thing to hear this type of experience.

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Glad to hear of your experience I've heard lots of horror stories about the smoking issue.....good dealer you got there.
 

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That's great news that they are taking care of you. Would you mind sharing what dealer you used?
 

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Discussion Starter #6
That's great news that they are taking care of you. Would you mind sharing what dealer you used?
Larson Cycle in Cambridge. I've done a lot of business at Larson's over the years. I think this was the 5th ATV I purchased there, also bought at least 6 motorcycles. Two of them Goldwings.
 
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You have a very good dealer. We have a 16 Kodiak that smoke's and uses oil.we battled Yamaha with the shitty air filter from the first ride of 100 miles had dust past air filter.but dealers says its normal lack of maintenance on our end and for us to change filter every ride.yamaha offered to give u a new filter so we could change it every ride. After 800 miles back and forth to the dealerships Yamaha will not fix the smoking problem because of dust past the air filter even though it was reported at just over 100 miles. We did the EHS air box fix that voided the warranty even though it stopped the dust problem.
 

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Larson Cycle in Cambridge. I've done a lot of business at Larson's over the years. I think this was the 5th ATV I purchased there, also bought at least 6 motorcycles. Two of them Goldwings.


This is how you build a successful business, making sure you buy your next vehicle there. This is the best marketing for your dealer.


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Larson Cycle in Cambridge. I've done a lot of business at Larson's over the years. I think this was the 5th ATV I purchased there, also bought at least 6 motorcycles. Two of them Goldwings.
Thank you for sharing. I've heard great things about those guys although I've never done business there. Glad they got you taken care of.
 

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Discussion Starter #10
I picked up my Grizzly today. No charge, Yamaha covered everything. The work order said "Rebuild top end per Yamaha - Piston kit and valve seal".

It's running perfectly, so far no smoke at start up. Hopefully this takes care of the problem.
 

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Discussion Starter #11
I have 267 miles on the Grizzly since Yamaha redid the top end, the machine is running great. However, when I started it Sunday morning it smoked just like before, left a blue haze in the campground. I rode it sixty some miles on Saturday, it was cool Sunday morning, 48 degrees.



I called the dealer. He said he would contact Yamaha and see what say. Told me they had just completed the top end on another Grizzly, and now have 2 more smoking. :frown2:
 
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How disheartening! Keep us posted.
 

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I have 267 miles on the Grizzly since Yamaha redid the top end, the machine is running great. However, when I started it Sunday morning it smoked just like before, left a blue haze in the campground. I rode it sixty some miles on Saturday, it was cool Sunday morning, 48 degrees.



I called the dealer. He said he would contact Yamaha and see what say. Told me they had just completed the top end on another Grizzly, and now have 2 more smoking. :frown2:
How many times has it smoked since the top half was rebuilt? I am asking because my 2017, smoked once. Filled my garage with blue smoke. That was a couple of months ago and hasn't smoked since (knocking on wood!)
 

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Well that's not real good, from the description of the problem it sounds like oil is pooling overnight on top of the piston giving you the smoke screen then clearing up as the engine gets some heat into it. Normal thing would be to look at valve seals, on the parts list the guides have the same p/n for inlet & exhaust, but the seals are inlet or exhaust p/n's, could these be getting mixed up & getting touched by the upper valve spring retainer causing drama's?? Does your paperwork have the seal p/n's to check? The engine has a forward lean so if oil was to leak down from the exh. valve area & into piston or exh. pipe area that would give you the smoke your getting, the weak seal would still use oil but would not show up as blue smoke. These are all pure guesses of course but might be something to throw at your dealership, who knows, we gotta get to the bottom of this.
 

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Discussion Starter #15
I've only noticed it smoking once since the top end has been redone, but it was a lot of smoke for a few seconds when I started it.


I also have 2017 700 Kodiak. The Kodiak smoked once on startup last fall, but that was the only time I saw it happen.I have the extended warranty on the Kodiak.
 

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Well that's not real good, from the description of the problem it sounds like oil is pooling overnight on top of the piston giving you the smoke screen then clearing up as the engine gets some heat into it. Normal thing would be to look at valve seals, on the parts list the guides have the same p/n for inlet & exhaust, but the seals are inlet or exhaust p/n's, could these be getting mixed up & getting touched by the upper valve spring retainer causing drama's?? Does your paperwork have the seal p/n's to check? The engine has a forward lean so if oil was to leak down from the exh. valve area & into piston or exh. pipe area that would give you the smoke your getting, the weak seal would still use oil but would not show up as blue smoke. These are all pure guesses of course but might be something to throw at your dealership, who knows, we gotta get to the bottom of this.

The service work order (a copy of the order is attached to one of my previous posts) does list 4 valve seals, 2 each of 2 different p/n's. I question the service manager about replacing the valve guide while he was working on the top end. He said the head would need to sent out to a machine shop to replaces the guides. He was convinced it wasn't needed.
 
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The service work order (a copy of the order is attached to one of my previous posts) does list 4 valve seals, 2 each of 2 different p/n's. I question the service manager about replacing the valve guide while he was working on the top end. He said the head would need to sent out to a machine shop to replaces the guides. He was convinced it wasn't needed.

That's a real bummer that you're having smoke again. From what I recall, the valve guides had been the culprit from several other members' posts. I wonder what led them not to do those too. Yamaha covered the repair the first time right?
 

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I bought my 2016 Grizzly 26 months ago. After the first 200 miles I changed the oil, and it almost immediately started burning oil on random startups. Didn't use a drop while riding. It would never do it at the dealer so I finally started recording it everytime I started it and had someone with me to run the throttle. I got some good videos (posted below).

I took it in and complained about that, and the active hill descent not working. After getting the run around for most of the summer, they replaced the clutch and one way bearing, and also rebuild the top end.

Shortly after the rebuild, it started smoking again. After complaining, and recording a bunch of videos (Youtube, and search for "2017 09 23 Diamondfield Jack"), they pulled the engine and did a complete rebuild including new valve glides, pistons, rings, etc last December.

It has worked fine until a ride last month when I found that it was still getting dirt past the filter after a riding in the middle of the pack on a very dusty ride with my ATV club. I took it in and they pulled the air box and put RTV anyplace they could, replaced the clamps, and put in the new updated air filter.

Right now I have 4362 miles and 330 hours on it. The full rebuild was at 3309 miles and 245 hours. I don't recall the mileage\hours on the first top end rebuild.

When I bought it, I got a free 18 month extended warranty that ran out in May. In February I got a notice that I could extend it for another 2 years. I whipped the credit card out pretty quickly given all the headaches with this machine.

My other Grizzly is a 2013 with 8500 miles and other than oil changes, spark plugs, and air filters, the only thing I've had to do was replace the clutch and belt last fall since the one way bearing was starting to fail and I figured I'd just replace everything while I was at it.

As of right now, the dealer is going to call me as soon as they get a 2019 in stock and my 2016 is going away.

MitGSX97
 

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Both of the video's show no oil burn at idle, but as soon as they throttle up the smoke screen starts & as the bike heats up it clears the oil burn & won't repeat it's self, so something is getting out of align on the last ride & causing the problem, if dust or wear was a factor it would do it regularly, if bore taper was out of spec, same, if the ring gaps all aligned it might do it, but having it happen to so many guys, in the mornings, unlikely, I keep thinking exh. guide lifting letting oil seep into exh. port & exh. pipe & when engine is heated it drops back into place, unlikely as there's no shoulder on the guide to catch it & surly the techs would have checked guide depth when doing the job, wouldn't they? Other weird & wonderful ideas, breather valve on top of rocker cover jamming causing piston pressure to force oil past rings, blockage or pressure bubble in oil return from rocker area flooding & not clearing until oil thins, most other idea's would have it happening all the time.
Could you ring your service departments & find out if their tech's found any unexplained damaged parts like squashed oil seals, excess carbon build up on valves etc, might lead somewhere.
 
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