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Post by ramblinman on May 18, 2015 16:26:35 GMT -5
idk lain, thought that was what you were referring too.  |
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Post by ramblinman on May 18, 2015 16:22:38 GMT -5
well, i did it. basically same as vid. i did 2 flushes slightly over filled 100% diesel for 2 minutes each flush. appears to have fixed it. after filling with oil i removed the cover and was going to do geh idea but my kill switch doesn't send power to starter. so i started it and couldn't shut it off fast enough. had 2 streams like venom shooting out of the cam. i do wish i would have started it with cover off before i did the flush so i could compare. oh well, i'm fairly certain it has plenty of oil pressure considering it hit my floor mat at idle. i'll update this thread when my crankcase gasket leaks.  |
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Post by ramblinman on May 18, 2015 15:13:37 GMT -5
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Post by ramblinman on May 18, 2015 15:02:08 GMT -5
iicr i think Leo put a 2-stroke pipe on his old 4-stroke. get some info from him imo.
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Post by ramblinman on May 18, 2015 14:58:18 GMT -5
The issue is the oil pathway. It runs up the head bolts to the rocker arm assembly. If the gasket material spread over this pathway, that will stop the flow. what path does it take back to the crankcase? is their a drain behind the chain? so most likely spots that would get clogged are the cylinder/head passages? what about the pump? i'm guessing it could be clogged. is their any other part of the engine that could clog? i'm asking cause if i replace the oil pump and clean out the cylinder and head then would it be back up and running? i don't have the tools, time or patience to split the case. |
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Post by ramblinman on May 18, 2015 12:24:38 GMT -5
... on 157QMJ engine? does it come up the cylinder to the valves and then splash the chain? my chain isn't getting any oil, the rocker arms and bearings are getting very little. |
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Post by ramblinman on May 18, 2015 12:05:20 GMT -5
I advise against putting diesel fuel in your scooter to flush it. What I do advise is just to buy a new gasket set, new set of rings and rent a honing tool. You can get ALL of this for around $30~50.00 to the door. Take the engine apart, clean it real good and re-assemble.... It's kind of a lot of work, but you'll wind up with a like new motor and the satisfaction of knowing it's done right. i basically did all that last week and changed the cam because the bearings were bad. now i found out i'm not getting oil to the cam or very little. guess thats why my last cam self destructed. i been using an oil resistant gasket maker and had a bunch of fragments in the engine. never again. i took the cover off and oiled the chain, rockers and springs by hand. took gas can a mile down the road, on the way back it started to get real hot so i cut the engine and pushed it the last 1/5 mile. anyhow, the scoot is scrap metal if i can't clear the passages so i'm gonna do it anyway. i have the same concerns about fuel on gaskets but i see no other way to clean it out. |
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Post by ramblinman on May 18, 2015 5:00:44 GMT -5
One last post , lol. Just take the valve cover off, hit the kill switch , and crank the engine . the oil will flow if the passage is not clogged . interesting idea. i'm definitely doing that, just don't forget to bolt the engine ground. you get a bone for that one. how does oil flow to the chain? does it come up the cylinder to the valves and then splash the chain? |
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Post by ramblinman on May 18, 2015 4:53:25 GMT -5
a little side to side movement is normal. try gently pulling the chain out. if you can pull it off the teeth or expose light between the teeth then you know you have a problem.
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Post by ramblinman on May 18, 2015 4:37:30 GMT -5
I'm just thinking it would take a decent size piece of that stuff to clog the passage or pump . I'm not sure if it would make it past the filter screen. Anyway , let me know how it goes. I'll do the same . I better get some sleep , lol. One last post , lol. Just take the valve cover off, hit the kill switch , and crank the engine . the oil will flow if the passage is not clogged . interesting idea. i'm definitely doing that, just don't forget to bolt the engine ground. you get a bone for that one. |
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Post by ramblinman on May 18, 2015 4:25:49 GMT -5
I'm just thinking it would take a decent size piece of that stuff to clog the passage or pump . I'm not sure if it would make it past the filter screen. Anyway , let me know how it goes. I'll do the same . I better get some sleep , lol. i been using it for over a year on this scoot and recently noticed small fragments in the oil passages on the head and cylinder. i tried getting it out with q-tips and wd40 but that stuff is invincible. i guess gasoline is it's kryptonite. |
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Post by ramblinman on May 18, 2015 4:07:37 GMT -5
lol, i agree. i was a bit dumbfounded and naturally wanted to research. i need to do something, i can't ride it for long as is. Since you can mix seafoam with the oil , I'd try it first . im going to do it maybe 2mro. I'm also going to get a big syringe , fill it with oil , and attach a small hose to it . then I'll remove the oil screen and stick the small hose into the oil port , the I'll have someone spin the flywheel clockwise and ill push the oil into the port and see if it suck it up . if its clogged , hopeful the force of the syringe will push everything through. Its worth a try . and no tearing down. i know what i'm going to do. i'll run the engine then remove the valve cover to confirm my suspicions. if dry as expected i'll do a 50/50 diesel split for 2 minutes. drain, add oil, start for a minute then pull the cover to check chain for oil. it will be a lot of work removing the cover many times but at least i will know when the passages are cleared and won't leave the diesel in there for longer than necessary. |
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Post by ramblinman on May 18, 2015 3:47:29 GMT -5
You can always remove the side cover and check the pump . you can also see the oil passage if you look into the oil drain area . wait I know what to try ! Drain the oil then turn the flywheel backwards and see if oil comes out from the passage. If it does the chances are its not clogged. The pump should pump backwards , I think . I don't know man ,lol. That video looks kinda nuts . lol, i agree. i was a bit dumbfounded and naturally wanted to research. i need to do something, i can't ride it for long as is. |
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Post by ramblinman on May 18, 2015 3:37:57 GMT -5
Sorry about all the posts , lol. But , unless you do a tear down I would not flush with diesel. Reason: the only place that the gasket maker could do damage is in the oil passage. If it did make it past the screen and into the passage then you need to get the diesel into the passage. To do that without a tear down , you would have to turn the engine over . even if you did it by hand , you would then get diesel up to the cylinder ! And that would not be good . that would dissolve all lubrication and , well it would not be good. So to to a diesel flush " sounds like a dance " " The Diesel Flush" , lol , anyway, to do the diesel flush one would have to do a top end teardown " at least ". i found this video which started me on the hunt for more information. i've read a few threads and many claim they do something similar. 50/50 split, 10 minutes instead of 2 and whatnot. i haven't found any info on someone doing this in a scooter. i'm not too concerned about running the engine for a few minutes without oil but i am comcerned about the damage to the main engine crankcase gasket. |
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Post by ramblinman on May 18, 2015 3:27:15 GMT -5
I was also concerned about the gasket maker I was using . I made the mistake and used the red high temp kind on mynvalve cover ! I found some in the oil screen ,and was concerned it is blocking some of the oil passage. If there is someway to blow compressed air to clear them up , that would be great. i doubt it. at this point i think it's clogging the pump too. |
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