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Post by cruisethescoot on Jul 4, 2011 19:28:55 GMT -6
I don't, I have just kinda hit the end of my rope, and was thinking of something different.
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Post by cruisethescoot on Jul 4, 2011 17:52:45 GMT -6
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Post by cruisethescoot on Jul 4, 2011 17:47:48 GMT -6
Yeah, it has that. Should it be there, or should I remove it? What difference would it make in my case?
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Post by cruisethescoot on Jul 4, 2011 17:40:14 GMT -6
I adjusted the valve gaps today, changed the oil a few weeks ago (maybe 200-300 miles). Black plastic around the engine??? I haven't removed anything like that, so it will have been in place since I bought it 3 years ago.
I have also purchased a CDI and ignition coil, they should be coming tomorrow or Wednesday. I tested the pickup coil using a multimeter, and from what I have been able to tell using info online, I am getting enough current generated.
What about the electric choke? If that failed, would it cause the problems I have been describing?
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Post by cruisethescoot on Jul 4, 2011 15:12:55 GMT -6
Another thought, these engines don't have any type of temperature sensor, right? It cant be that it is getting too hot, and then having problems?
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Post by cruisethescoot on Jul 4, 2011 15:11:15 GMT -6
Ok, so I got a feeler gauge and set the valves (intake was pretty close, exhaust was tight) and she started right up. I rode around the block a few times and was getting excited about maybe having solved the problem......until it died. It was parked in my garage and just idling when it just struggled and stopped. I have yet to be able to get it going again.
On the bright side, the valves are now adjusted right....
The way in which it stops I find interesting, in that it only seems to have problems with the engine is warm, and it doesn't seem to be a mechanical problem, since it will run (when it works, it actually runs pretty well), but I am completely stumped.
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Post by cruisethescoot on Jul 3, 2011 21:44:27 GMT -6
Thanks, I have no idea if my dealer did this or not. I am just confused since it ran without a problem for 1800 miles. I'll adjust them and advise on the progress.
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Post by cruisethescoot on Jul 3, 2011 19:33:30 GMT -6
PDI? Sorry, I'm new to this world, and don't know the acronyms.
How often do you adjust the valves?
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Post by cruisethescoot on Jul 3, 2011 17:28:09 GMT -6
So, my valves are tighter than .004 and .005 is your guess, which is causing the problem?
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Post by cruisethescoot on Jul 3, 2011 15:58:19 GMT -6
Ok, thanks. I actually just watched that video a bit ago before I read your post. I'm not a mechanic, but it seems pretty straightforward. Do you guys have any idea about what the stock valve setting is?
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Post by cruisethescoot on Jul 3, 2011 14:47:26 GMT -6
Valves have never been adjusted. I have seen several articles on how to do this, but I am wondering how long it will take? Can I get the valve adjustment strips at any automotive store?
Oh, and by the way, the scooter has about 1800 miles on it, should I be using fully synthetic oil? Would that make any difference?
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Post by cruisethescoot on Jul 2, 2011 23:51:27 GMT -6
Ok, so I have had a Roketa 150cc scooter for about 3 years now. I have had no problems, until recently. What happens is it will normally start fine, and I can ride several miles before the motor start chugging and stalling, and will eventually quit. Sometimes it will start right back up, and sometimes I will have to wait. I replaced the fuel petcock/valve under the tank, which didn't help. I have also run into times where the spark plug would not fire, but after charging the battery (when it doesn't start, I run the battery down trying to troubleshoot) that problem went away. Also, I have checked the following: fuel flow, vacuum lines, carburetor, air intake, fuel filter, stator, pickup, CDI, ignition coil, and spark plug. Because the problem is so intermittent, and only happens after riding for a while, I am having a difficult time determining the cause. I am open to any suggestions, and will (hopefully) be able to answer any questions. Thanks.
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