03 And Up Grizzly's Burning oil?????

[Diceman]

Was told recently that eventually, even with low mileage that a Grizzly will eventually start burning alot of oil.....I have 2800 miles on mine and now others with Grizzlys that have had no issues at all...anyone else hear of this problem?.....Maybe a Polaris guy just starting a bad rumour..lol.....Diceman

 

[Ganz]

I have heard the same thing. Sounds like some do some don't. Kind of hit n' miss. Mine doesn't, yet.. knock on wood

 

[Diceman]

thanks...hopefully I am on the miss side too.....maybe I should start saving or earning more money for an engine job down the road...........I can sell security systems for yamahas so they will never be stolen, a Polaris Cover...lolllllllllllllllllllllllllll

 

[maim]

cat one usually works better though,

 

[Diceman]

lol

 

[clutch]

My 06 grizzly 660 thought that oil was free. Other than that it was a great machine. My 08 700 uses no oil.

 

[pat the rat]

i have seen many grizzly owner around here with blown engines due to not checking the oil and running out,a frienf of mine just bought an 03 grizz with a blown motor for $800 cdn,i would of bought it if i'd known

 

[Diceman]

wel fuuny thing...I started this post and now I have just over 3200 miles on my Grizzly and I am burning oil...does anyone know if all Grizzly's have the same problem like bad rings, etc??...I may put in a 1/3 of a litre on a tank of gas, probably alittle less.......been told that oil is way cheaper than getting it fixed so go for it and ride it...some guys told me they burned iol after about 200 k and still burn oil with 6 ooo k...whats your guys thoughts??..Thanks

 

[clutch]

The engine with the 5 valve head is just a poor design. Just carry extra oil and go for it. Mine used oil from day one until 7000 miles and never fouled the plug. Remember, keep it full. I also changed the oil and filter every 500 miles.

 

[Diceman]

The engine with the 5 valve head is just a poor design. Just carry extra oil and go for it. Mine used oil from day one until 7000 miles and never fouled the plug. Remember, keep it full. I also changed the oil and filter every 500 miles.

what happened after 7000 miles?....is that when you got rid of it?...so the 04 Grizzly 660 is the 5 valve head engine?..Thanks

 

[Diceman]

also just read on another site that some guys who use Amsoil have had consumption issues and when they switched brands , problem solved....anyone else hear of this?

 

[clutch]

I ride in the desert in Az a lot and just didn't want any mechanical problems. The quad was still running fine it was just time for a fresh one. My 08 will have over 7000 miles by spring and hopefully I will be getting a fresh one for next year.

 

[grizztracks]

The engine with the 5 valve head is just a poor design. Just carry extra oil and go for it. Mine used oil from day one until 7000 miles and never fouled the plug. Remember, keep it full. I also changed the oil and filter every 500 miles.

Not a very good explanation Clutch. The 5 valve design is not why the 660 burns oil and carrying extra oil is not an acceptable fix for most.

I've worked on several of these engines. I think two things happen to cause the oil burning problem, poor maintenance and running them hot. Many people neglect proper oil changes, valve lash adjustments and air filter maintenance. These engine tend to run hot especially when the radiators take in mud. Even with the 2003 louvered side panel update I've still had mine boil the gas.

My engine didn't burn oil until I ran it in a muddy dice run and had problems keeping the radiator clean. My temp light came on several times. Afterwards I got to a point were it starting using almost a quart of oil per tank of gas. The 660 only hold just over two quarts so its important to keep them full. When I tore the engine down the rings seem to have lost their temper so I replaced the piston, rings and valve seal and all is good 2000 miles later. Parts ran around $150 and my labor charges would run around $200 so its not a terribly expensive fix.

I've discussed this in early posts.
http://www.tyatv.com/viewtopic.php?t=1395

 

[clutch]

Like I pointed out I changed the oil and filter every 500mi. My 660 really didn't know what mud was because almost all the miles on it were in Arizona in the winter. Heating was never a problem. The air filter was cleaned every other ride, I had an extra so a clean one was always ready. It was simply a POS. The only bad Yamaha I have ever had. My wife and I have had 13 new Yamaha quads and the 660 was the only turd in the bunch altho my 660 Raptor used a little oil too.

All my Yamaha motorcycles were oil burners but they were all two stroke YZ's.

 

[grizztracks]

If it used oil from day one why didn't you have it repaired while covered under warranty? It sounds like yours had a ring installation problem from the start. Yamaha is normally very good about taking care of their customers and most likely would have corrected it.

These things still can run hot in the winter. I've had it spitting and sputter from the gas boiling issue while riding in the snow on a 30 degree day. Even with the louvered side panel, the engine still has a problem dissipating the heat.

Don't neglect doing a periodic valve lash adjustment. Lash adjust is a recommended maintenance item that many owners tend to forget or don't bother with because it’s not as simple as a filter change. The intake valves tend to tighten up and if ignored will eventually cause problems.