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Post by nalrac on Sept 7, 2011 12:27:42 GMT -6
OK. In your experience, can I remove the cover without destroying the gasket?
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Post by nalrac on Sept 7, 2011 7:35:11 GMT -6
I drove my scooter to work for the first time this morning. There is still a leak behind the stator!  I'm not sure if it's the seal but I assume that it is. I'm pretty certain that it's not overfull. What could cause this? |
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Post by nalrac on Sept 5, 2011 10:26:14 GMT -6
Hey All,
I have some great news and not-so-great news...
Great news: I was able to eliminate the leak entirely at the gasket. I used the red RTV and the pre-cut gasket together as recommended and it worked great. No more leak.
Not-so-great news: Although I replaced the seal there's still a leak behind the stator. I believe it's the lower bolt that holds the stator. It seems that the oil is seeping around it. However, I can't be 100% sure. What I did, though, is remove the stator and fill the bolt hole with the red RTV. I also oiled the crankshaft and filled the area in front of the seal and around the shaft with the RTV. I put it all back together, let it cure for a few hours, and let it run for about 30 minutes with no sign of a leak anywhere. I'm hoping that the problem is solved.
The bike is in the garage for the next few days (a storm is in town until Wed.) but after that, I will do a road test and let you know how it goes.
Thanks,
Adam
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Post by nalrac on Sept 2, 2011 9:19:53 GMT -6
Thanks JR,
I picked up some red RTV yesterday. I'll follow your recommendations and let you know how it goes. Thanks!!
Adam
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Post by nalrac on Sept 2, 2011 5:01:11 GMT -6
Hey Guys, I stopped by the local scooter shop here in Charlotte, NC called Carolina Fun Machines. Really nice place and nice people. They had a 19.8x30x5 in stock. After getting home I popped the old one out and confirmed that it is, indeed, a 19.8x30x5. So, it looks like I have everything in order to do the installation over the weekend  I picked up some degreaser and acetone along with some 3M heavy duty scrub pads. I want to take some time and clean it up while it's torn apart and do it right. Question for JR: You mentioned using Red RTV as a sealer on the pre-cut gasket. Can you give me some details about how you do that? Is it a thin layer on one side or both? Which side? Thanks! You guys are awesome  Adam |
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Post by nalrac on Sept 1, 2011 10:51:07 GMT -6
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Post by nalrac on Sept 1, 2011 10:28:11 GMT -6
Thanks for the response, JR. I will have to give the red silicone a try.
I'm not able to get to my bike to remove the seal today. Any idea what your Bali has on it?
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Post by nalrac on Sept 1, 2011 5:41:34 GMT -6
So, I picked up a gasket yesterday. It took a while but I was able to get the cover off and the old gasket stripped. However, there's been some new developments.
When I removed my flywheel I noticed a quarter sized puddle of oil on the lip below the stator. After shining my blacklight on it I could see a trail of oil coming from the crankshaft oil seal. The seal itself was covered in oil (it was glowing really bright under the light). A leaky shaft oil seal explains more easily how the fan could be blowing the oil around.
Now, I have a few questions regarding this and the gasket:
1. I failed to get the size of the oil seal. What should I purchase? I want to pick one up today at the local shop.
2. I was able to use a razor blade and scrape a majority of the old gasket off. However, there's still some residue in a few places. How should I clean this off? Does it matter?
3. Should I use a gasket sealer of some type?
4. Anything I'm missing?
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Post by nalrac on Aug 30, 2011 7:22:08 GMT -6
Positive update! ;D I found the leak. I used InterdynamicsUV Oil Dye ( bit.ly/rftIF4) and used a black light and it was beautiful. The leak glowed so bright I couldn't miss it. Fortunately, I didn't see any other leaks at all. The only leak that I found was at the back of the crankcase. It's definitely a bad gasket because it's leaking out right along the seal. The location of the leak is circled in the image below:  I'm going to order this gasket and install it over the weekend ( bit.ly/nzDrV6) Let me know if you have any thoughts, Adam |
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Post by nalrac on Aug 26, 2011 11:28:05 GMT -6
jhbietz, funny! That's what I thought too |
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Post by nalrac on Aug 26, 2011 8:14:22 GMT -6
Thanks for the help, guys! It's been suggested that I use a UV oil dye to help find the leak. Any experience with this?
JR, I agree with you that I should do it right. If I find out that it is indeed coming from the right side then I will just replace the gasket.
Doug, I made sure to get the bottom extra clean so I'm pretty sure that it wasn't running and accumulating from anywhere.
What I've thought about doing however is stripping it down to the bare frame, mounting the seat on it, and taking it for a quick spin. That way, I can get the engine nice and hot and maybe help me confirm where the leak is coming from. As I asked above, would the dye help with this process?
Finally, it been suggested that I just "get a new engine". This is an expensive solution and seems to be the easy way out rather that the cheapest. Thoughts?
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Post by nalrac on Aug 25, 2011 19:52:36 GMT -6
Hey Guys, Here's (hopefully) the final mystery to solve on my scoot. I accidentally posted this elsewhere before I realized. As I've mentioned before, I have an oil leak and boy is it a mess! Oil is getting everywhere. It was just plain impossible to see where it was coming from so I took the suggestion to strip ever bit of plastic and degrease the entire thing. Then, I let it run for about 20 minutes and noticed an oil seepage at the bottom of the right crankcase cover, near the bottom of the filler spout. Oil was also seeping from between the right crankcase and crankcase cover in front of the back wheel, inside the wheel well. So, I tightened the bolts on the cover and cleaned again. I ran it for a while and didn't see a leak so I hoped that it had stopped it. However, this morning I reassembled the whole thing (ugh) and within two miles had another oily mess under the engine. So, here are my questions: 1. Can oil from the right crankcase get all the way up to the front of the engine area? I imagine that the wheel turning and the airflow inside the engine area can make a big mess. It's even getting under the plastic shroud over the engine. Could the flywheel be slinging it around? 2. What do I need to know about removing the right crankcase cover? Sprocket has suggested that I put some silicone around the seam. I think that is a great idea. Any other ideas? Thanks in advance! - Adam Read more: .scooterdoc.proboards.com/index.cgi?action=display&board=150cc&thread=4871&page=1#ixzz1W5yqy5Ev" rel="nofollow" target="_blank"> .scooterdoc.proboards.com/index.cgi?action=display&board=150cc&thread=4871&page=1#ixzz1W5yqy5Ev |
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by: nalrac - Aug 1, 2011 11:43:20 GMT -6
Post by nalrac on Aug 1, 2011 11:43:20 GMT -6
Thanks, Sprocket! I was able to order one for $9 including shipping. If I had some red silicone lying around though I would certainly try it.
I should have the new part on Thursday. I'll let you know how it goes.
Thanks!
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Stranded
by: nalrac - Aug 1, 2011 7:12:08 GMT -6
Post by nalrac on Aug 1, 2011 7:12:08 GMT -6
Thanks, JR. FYI - After I let it set for a few days it wouldn't even start up. I'll assume that this is the cause for that too. I'll replace it and we'll see if that fixes all my problems.
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by: nalrac - Aug 1, 2011 5:26:28 GMT -6
Post by nalrac on Aug 1, 2011 5:26:28 GMT -6
I think I found the culprit. I still had compression so that was good news. So, I looked at the intake/carb and found a large crack in the intake manifold. There is also a lot of oil around this area. Is is possible that oil is coming out of the crack? Take a look at the picture and let me know what you recommend. Thanks! BTW - I tested my auto enricher while I had access to it and it's working fine. Would this cracked manifold have affected my gas mileage? Attachments:
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