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Post by thxcuz on Aug 30, 2016 22:17:52 GMT -5
i got a new head the other day. I installed it today and the scooter does not run. It's a 47mm head. it was the only one the guy had at the scooter shop. I have a 47mm kit on my scoot so I thought it would be fine. I needed a new head due to a stripped stud hole
at first it wouldn't start, then it started but it would not idle, then i got it to idle but i had no power. I was going maybe 3 mph.
then I adjusted the valves again. I found the bolt on the exhaust rocker came off. I guess I didn't tighten it enough. after that it ran ok up and down the alley. When I tried to start it again, it would not start. checked my valves again, they were around .004, where they should be, right? I have spark because I was able to start it here and there. do you think I am not getting fuel?
I have noticed that spacer thing on my intake was not lined up with the hole on my new head, could that be restricting the fuel?
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Post by Deleted on Aug 31, 2016 3:12:28 GMT -5
what does a compression test show?
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Post by thxcuz on Aug 31, 2016 8:49:58 GMT -5
I don't have a tester yet. If I'm not mistaken they can be rented from auto zone.
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Post by humanshield on Aug 31, 2016 9:10:45 GMT -5
Many of the kits don't have the proper size adapter for scooter spark plugs. I know this one does.... Compression Test Kit |
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Post by 90GTVert on Aug 31, 2016 11:03:53 GMT -5
If you want to find out if the tester has the right adapter for you, the 139QMB uses 10mm spark plug threads. Autozone has loaner tools as well as others.
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Post by acvw74 on Aug 31, 2016 16:22:39 GMT -5
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Post by thxcuz on Aug 31, 2016 17:32:50 GMT -5
I'm not ruling anything out. I'll test it for a leak tonight. |
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Post by acvw74 on Aug 31, 2016 20:18:05 GMT -5
I'm not ruling anything out. I'll test it for a leak tonight. I just always try to eliminate the easy stuff first. Good Luck!! |
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Post by thxcuz on Sept 1, 2016 0:10:10 GMT -5
my finger test shows not a lot of compression. I know that's not accurate but it's all I got so far. I think I may also have messed up my starter or wore out my starter bendix. a guy at one of the local scooter shops has an atm50 taking up room in his shop. it may be worth the $100 he wants for it just for parts.
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Post by 50chinkschinkin on Sept 2, 2016 16:58:07 GMT -5
Check valve lash and that the valves are seated properly
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Post by kagetenshi on Sept 2, 2016 20:54:09 GMT -5
thxcuz I would buy that atm-50. Even if it doesn't run, it is worth more than that in scrap metal much less parts. Hell, the atm-50 frame is better than the VIP I have. It might possibly weigh more but it can take more of a beating. Though I may be wrong. You could piece it out on eBay and make more than double if you tried. So it is worth the $100 for parts. I say do it. 
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Post by humanshield on Sept 2, 2016 21:31:22 GMT -5
When your garage starts to look like this....you'll almost have enough spare parts scooters on hand  |
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Post by thxcuz on Sept 2, 2016 21:45:09 GMT -5
Can I come over and play at YOUR house?
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Post by Deleted on Sept 2, 2016 21:47:47 GMT -5
I started with one, I now have three, one running, one rebuilding, one just sittin and I'm trying to figure out what to offer a guy for 150...
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Post by humanshield on Sept 2, 2016 21:53:29 GMT -5
I've gotten rid of 4 so far this year.....the old lady gave me an ultimatum  |
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