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Post by toddmaples on Jun 24, 2015 9:00:44 GMT -5
Question, how important is the bolt that covers the spring retraction mechanism after installation? I never put it back on, could that have been causing the oil leak? I am trying to put the bolt it on now, but it wont go all the way down and I do not want to force it too much. Perhaps I should cut it and make it shorter? Thank you YES!! That thing will blow oil like crazy if not plugged and you have any piston blowby. |
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Post by rcq92130 on Jun 24, 2015 13:43:48 GMT -5
Question, how important is the bolt that covers the spring retraction mechanism after installation? I never put it back on, could that have been causing the oil leak? I am trying to put the bolt it on now, but it wont go all the way down and I do not want to force it too much. Perhaps I should cut it and make it shorter? Thank you Presume you are talking about the chain tensioner. Yep. If you look at the bolt it actually has a rubber seal under the head. The reason is oil will literally flood out if the bolt isn't sealing the hole. If you can't find the bolt (or it's damaged), a new chain tensioner is only about $10 and is a snap to install (once the cyl. head cover is off). Suggest you just go ahead and replace the tensioner. |
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Post by carasdad on Jun 24, 2015 21:00:55 GMT -5
The PCV device is only a band-aid to cover the fact that all your oil loss is because you need new piston rings. That is where your blow by is coming from..that pressurizes your crankcase..causing oil to spew out the the nipple. I have seen and repaired this very issue on 6 or more customer scoots in the past few years.
Glenn
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Post by rcq92130 on Jun 24, 2015 22:14:21 GMT -5
The PCV device is only a band-aid to cover the fact that all your oil loss is because you need new piston rings. That is where your blow by is coming from..that pressurizes your crankcase..causing oil to spew out the the nipple. I have seen and repaired this very issue on 6 or more customer scoots in the past few years. Glenn Holland is one of the most adorable towns on the planet! But I've always wondered what it's like when the calendar passes November .... |
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Post by ital on Jun 25, 2015 8:50:13 GMT -5
Question, how important is the bolt that covers the spring retraction mechanism after installation? I never put it back on, could that have been causing the oil leak? I am trying to put the bolt it on now, but it wont go all the way down and I do not want to force it too much. Perhaps I should cut it and make it shorter? Thank you Presume you are talking about the chain tensioner. Yep. If you look at the bolt it actually has a rubber seal under the head. The reason is oil will literally flood out if the bolt isn't sealing the hole. If you can't find the bolt (or it's damaged), a new chain tensioner is only about $10 and is a snap to install (once the cyl. head cover is off). Suggest you just go ahead and replace the tensioner. I did buy a new chain tensioner but it did not come with the center bolt :/, time to go to home depot :-) |
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Post by toddmaples on Jun 25, 2015 9:46:19 GMT -5
Presume you are talking about the chain tensioner. Yep. If you look at the bolt it actually has a rubber seal under the head. The reason is oil will literally flood out if the bolt isn't sealing the hole. If you can't find the bolt (or it's damaged), a new chain tensioner is only about $10 and is a snap to install (once the cyl. head cover is off). Suggest you just go ahead and replace the tensioner. I did buy a new chain tensioner but it did not come with the center bolt :/, time to go to home depot :-) Dont forget to get an "O" ring to make a good seal. If they dont have any presumably you could use some teflon plumbers tape to seal it in a pinch... |
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Post by geh3333 on Jun 25, 2015 20:31:09 GMT -5
I did buy a new chain tensioner but it did not come with the center bolt :/, time to go to home depot :-) Dont forget to get an "O" ring to make a good seal. If they dont have any presumably you could use some teflon plumbers tape to seal it in a pinch... I've never seen a tensioner with an o ring . the only gasket is between the tensioner assembly and the engine case. The center bolt just screws in. Mine is stripped and it never leaked once. I just barely tighten it down . I've even had the center bolt out before while the engine was idling and it doesn't blow any oil. |
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Post by rcq92130 on Jun 25, 2015 21:41:34 GMT -5
Dont forget to get an "O" ring to make a good seal. If they dont have any presumably you could use some teflon plumbers tape to seal it in a pinch... I've never seen a tensioner with an o ring . the only gasket is between the tensioner assembly and the engine case. The center bolt just screws in. Mine is stripped and it never leaked once. I just barely tighten it down . I've even had the center bolt out before while the engine was idling and it doesn't blow any oil. Left mine out after the first BBK, thinking (like you) it was just to keep dust out. Gushed oil. Put a bolt in and it still weeped oil. Threw some gasket cement under the bolt head and it stopped leaking. |
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Post by geh3333 on Jun 25, 2015 21:44:38 GMT -5
I've never seen a tensioner with an o ring . the only gasket is between the tensioner assembly and the engine case. The center bolt just screws in. Mine is stripped and it never leaked once. I just barely tighten it down . I've even had the center bolt out before while the engine was idling and it doesn't blow any oil. Left mine out after the first BBK, thinking (like you) it was just to keep dust out. Gushed oil. Put a bolt in and it still weeped oil. Threw some gasket cement under the bolt head and it stopped leaking. I never rode with it out, just at idle. |
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Post by ital on Jun 26, 2015 9:58:12 GMT -5
well, i bought a new bolt, washer and o ring at home depot for a total of $4 but i have like 20 washers and o rings now... lol
it was a perfect fit. The leak is mostly gone, but I do not know for sure yet. Went for a 10 minute ride, parked the scotter an hour later found one or two drops of oil, but could be old oil since I really did not do a good job cleaning it all out...
anyway I am not going to worry about it if it one drop here and there...
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Post by rcq92130 on Jun 26, 2015 12:34:27 GMT -5
well, i bought a new bolt, washer and o ring at home depot for a total of $4 but i have like 20 washers and o rings now... lol it was a perfect fit. The leak is mostly gone, but I do not know for sure yet. Went for a 10 minute ride, parked the scotter an hour later found one or two drops of oil, but could be old oil since I really did not do a good job cleaning it all out... anyway I am not going to worry about it if it one drop here and there... Good news - problem for sure identified. Over the long haul a few drops at a time will become a real nuisance and mess. The stock bolt does not really have an o-ring as a seal - just a rubber band under the head (there is no o-ring slot for an o-ring to fit in). So it might be a bit of a problem using a normal o-ring. Solution is simple --- just smear some gasket cement (silicone) on the o-ring, under the little bolt head and you will not have any drops leaking |
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Post by toddmaples on Jun 26, 2015 13:30:30 GMT -5
well, i bought a new bolt, washer and o ring at home depot for a total of $4 but i have like 20 washers and o rings now... lol it was a perfect fit. The leak is mostly gone, but I do not know for sure yet. Went for a 10 minute ride, parked the scotter an hour later found one or two drops of oil, but could be old oil since I really did not do a good job cleaning it all out... anyway I am not going to worry about it if it one drop here and there... Good news - problem for sure identified. Over the long haul a few drops at a time will become a real nuisance and mess. The stock bolt does not really have an o-ring as a seal - just a rubber band under the head (there is no o-ring slot for an o-ring to fit in). So it might be a bit of a problem using a normal o-ring. Solution is simple --- just smear some gasket cement (silicone) on the o-ring, under the little bolt head and you will not have any drops leaking These are not car engines, small amounts of gasket material in the system and ruin these engines... I personally would NEVER use any gasket maker on any part of the engine as it increases the likelyhood of something going wrong. |
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Post by rcq92130 on Jun 26, 2015 13:42:27 GMT -5
Good news - problem for sure identified. Over the long haul a few drops at a time will become a real nuisance and mess. The stock bolt does not really have an o-ring as a seal - just a rubber band under the head (there is no o-ring slot for an o-ring to fit in). So it might be a bit of a problem using a normal o-ring. Solution is simple --- just smear some gasket cement (silicone) on the o-ring, under the little bolt head and you will not have any drops leaking These are not car engines, small amounts of gasket material in the system and ruin these engines... I personally would NEVER use any gasket maker on any part of the engine as it increases the likelyhood of something going wrong. That's sound advice regarding the gasket under the jug and other areas where a lump of excess gasket sealant might make it's way into the oil galley and clog it. There is no risk of that from sealant under the chain tensioner bolt. I also am re-thinking the "no sealant" philosophy even regarding the 'under jug' gasket. Last time i used no sealant and the paper gasket worked it's way out - leak. I've jumped thru hoops trying to stop the leak w/o tearing the thing apart again and having to go thru another break in cycle. Next time I'll use a touch of sealant - just enough to wet the gasket. The key is to not have sealant squeezed out where it might enter the oil passage to the head. Anyway - that's where I am with sealant on these mouse fart engines. |
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Post by carasdad on Jun 26, 2015 18:01:00 GMT -5
The PCV device is only a band-aid to cover the fact that all your oil loss is because you need new piston rings. That is where your blow by is coming from..that pressurizes your crankcase..causing oil to spew out the the nipple. I have seen and repaired this very issue on 6 or more customer scoots in the past few years. Glenn Holland is one of the most adorable towns on the planet! But I've always wondered what it's like when the calendar passes November .... We usually don't get snow until December..so we ride until then. Sure the temps are in the 30's then..but we get no colder on a scooter than we do our Snowmobiles. Many of us ride all winter..as long as the roads are clear. Even if it is 20 degrees out. We just bundle up and go for it..  |
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Post by geh3333 on Jun 26, 2015 19:39:18 GMT -5
Honestly , you need a thread sealer. Use some thread sealer of the bolt and it will seal very good.
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