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1
350 Talk / Re: Excessive oil consumption
« Last post by BRT-GTR on Yesterday at 07:22:14 AM »
         Ok, got you now.
       There is no seal on the plunger shaft, it relies on a close fit in the pump body to stop back flow and for it's pumping action. If you can feel any play don't use the pump.  It's possible someone messed with it in the past. Check the pump stroke as per Graham Weeks article here:-

       http://bridgestonemotorcycleparts.com/index.php?topic=4221.msg24442#msg24442                   note also the comment about the adjuster back plate coming loose.

    Is the cam pushrod free to move back and forth. These can hold the pump at full open if they are sticky. Whether that would explain the oil usage, I don't know. Manual says full open it can use 600cc (over a pint) at 5000rpm for an hour. So a stuck pushrod might explain the usage. Have you checked the exhausts for the missing oil ? If it did go through the engine, they should be really loaded up.

  You can also check the pump action by introducing an air bubble into the outlet lines. You should then see a small slug of oil pushed alternatively to each cylinder.
2
350 Talk / Re: Excessive oil consumption
« Last post by husker on August 14, 2017, 07:25:51 PM »
Brian the slow drip is seeping out around the plunger shaft and there doesn't seem to be any type of seal on that shaft. But that would not be enough leakage to explain the amount of oil it used. Yes it's a mystery! I was using a lot more throttle when it was running on one cylinder so it was pumping more oil at those times. Maybe Amsoil is smokeless! Should have been raw oil blowing out the muffler. Hardy I will try what you suggest.  Thanks...............Rod
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350 Talk / Re: Excessive oil consumption
« Last post by hardy on August 14, 2017, 06:19:13 PM »
To verify the flow of oil, you could try running the bike on pre-mix while putting the oil lines to the cylinder into a bucket. If you have excessive oil flow, try resetting your oil pump. There is a thread about it, not sure where it as as not at my computer.

Hardy
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350 Talk / Re: Excessive oil consumption
« Last post by BRT-GTR on August 14, 2017, 05:21:18 PM »
         Rod,
                 Can't say where your 2S oil went, leak at rear of tank? Sure you would have noticed that.
         The worm wheel drive behind the oil pump has no seal but has a screw thread cut into to shaft. This pulls a small amount of transmission oil into the oil pump gear box to keep it lubed. Good news is, it's not a leak, it's designed to do that.
    The 2S oil side of the pump is separate from the pump drive and I don't see how it could push oil into the transmission unless there is seal missing. Your pump must have been delivering oil to the cylinders for you to do 50 miles. Something of a mystery?
        Brian
     
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350 Talk / Re: Excessive oil consumption
« Last post by moonpup on August 14, 2017, 02:46:36 PM »
This won't solve your oil consumption question/problem, but will give you an idea as to what mileage to expect.....

 http://bridgestonemotorcycleparts.com/index.php?topic=4555.msg27150#msg27150
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350 Talk / Re: Gto
« Last post by AlanJohn on August 14, 2017, 02:15:18 PM »
My other gold tag no is 21W07527
Kind regards
Alan
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175 & 200 Talk / 200SS Float Height
« Last post by Richw on August 14, 2017, 01:10:39 PM »
Hi ,could any tell me what the correct float height in millimeters for a 200SS MK11 is please .

Thanks
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350 Talk / Re: Gto
« Last post by moonpup on August 14, 2017, 12:54:53 PM »
It appears someone at the factory goofed and had to re-stamp it correctly!  ;D

21W is the correct designation based on the 07198. I have 2 gold GTO's that are 21W, with the highest number being 21W07032. In addition, there is another 21W identified in the "Serial Number" guide as 21W07523 which is 300 + bikes after yours.
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350 Talk / Excessive oil consumption
« Last post by husker on August 14, 2017, 09:59:48 AM »
Took the Gtr out for a ride awhile back and started to miss on one cylinder. When I got to an auto parts store I bought a points file and cleaned up the contacts and that fixed the miss. On the way home the right carb slide stuck in a near wide open position. I stopped to fix that and noticed the 2 stroke oil was below the sight glass. I had topped the tank off before I left. Got some 10w-30 at a gas station to get me home. To have burnt that much oil in 50 miles I would have been setting up a smoke screen behind me but it was not. Drained the transmission and got out 2 quarts which would be close to a pint extra. I use Amsoil synthetic which is not colored any different from regular oil. I took the pump off and removed the worm wheel cover and there is a slow leak out of the worm wheel shaft. Maybe 10cc in 2 weeks. The extra pint could have leaked into the transmission over the last year since it was put back together. I have a spare pump and I could not see any type of seal on that shaft. At even wide open throttle would it even be possible for it to have injected a near tank of oil in 50 miles? What are your thoughts? I am thankful I caught it when I did.  Thanks......................Rod
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350 Talk / Re: Gto
« Last post by AlanJohn on August 14, 2017, 09:16:54 AM »
The no on the metal tag is 21W07198
It looks as if it was origionaly 21K07198 and the W has been stamped over the K any thoughts
Alan
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