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Post by gummybody on Apr 3, 2018 21:02:47 GMT
Thanks Henri, correct I am pre-mixing. I will try your jetting suggestion when I’m running again. Meter showing 500 ohms between Green n White and 112 ohms between Red n White. Will check for damaged insulation on green wire in Stator at the weekend. Thanks again for the info, measurements with CDI disconnected btw.
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Post by gummybody on Apr 2, 2018 10:28:03 GMT
Hi, I've got a 63 Douglas 150 GL with a 1991 125 EFL engine. It has been running great for 18 months but it started losing power in 3rd and 4th when coming home from work in October. Managed to get home and since then have cleaned carb ( Dellorto si 20/20 d ), blown jets and carb, replaced mainjet stack 160/be5/96 but problem still exists. It will start ok and sit ticking over all day but as soon as I set off in 1st it feels "boggy" and stalls before I have gone 100 yards. Emptied tank and re-filled with new juice, tested fuel flow which looks ok, new float chamber , still same. Tried with fuel cap off, same, new CDI, same. Thinking now maybee exhaust? Is there anything I can do to prove this or just try a new one or any other ideas please?
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Post by gummybody on Jan 3, 2017 22:18:37 GMT
Good news gents, went to Buzz Solomoto in Halifax today and got a new CDI unit. Fitted it tonight and bingo, I'm off and running again. mijapxman, thanks, it was your post about the peak voltage being ok that pointed me away from the Stator toward the CDI. Henri, same goes, you hit the nail on the head and ironsloth, you were right too, I am grinning like a Cheshire cat.
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Post by gummybody on Jan 1, 2017 21:59:56 GMT
Hi Ironsloth, no I didn't do the conversion, was done when I got it. Green as a cabbage at the moment on Scoots. Thanks for the welcome guys. Great site BTW.
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Post by gummybody on Dec 30, 2016 17:19:16 GMT
Hi mijapxman. Thanks, I'm reading 498 ohms between Green & White so that's spot on and 112 ohms on the Pickup with CDI disconnected so that's ok. I was working on the assumption that 35v ac when cranking was no good as I read somewhere else that I should see >50v ac I was looking toward the Stator being at fault. Based on your 21-38 v ac being ok, I will turn my attention to the CDI unit and replace it. Still waiting for the Flywheel tool anyway but thanks for the info. I'll keep you updated.
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Post by gummybody on Dec 26, 2016 16:13:57 GMT
Hi Guys, a bit of help required please? I'm a newbee with a 1963 Vespa with a PX 125 engine. Have not had it long but was out last week and it died while doing about 40mph in 4th gear. Changed plug and off we went again with me feeling pleased. Failed again 4 times with symptoms = power loss before I managed to get home. Didn't really know a carb from a Stator but using this site and a few links, checked and there was no spark. Most of the Coil readings looked ok with a multi-meter except ( The guide I read said "Disconnect CDI block and check green on CDI block to earth = 600 - 1000 ohms, mine was 97K ohms but I did measure 500 ohms from green wire to earth so maybe I've misinterpreted and the measure is ok? ) Problem is I could only measure 35v AC on the green stator wire to earth when cranking and the guide said anything below 50v ac was a problem. Now looks like I need to purchase a Flywheel removal tool and have read about stripping threads and de-magnetizing the magnets, how careful do I need to be and any pointers before I mash up the timing? PS .. probably knew this kind of thing would be happening when I changed my mind and made a 63 Douglas my first scoot rather than the 125 Tourer on a 66 plate. Enjoying having a go at the moment though.
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Post by gummybody on Dec 26, 2016 14:45:17 GMT
Hi from Gomersal, west Yorks. I'm new to scootering but have wanted one for years. I now own a 1963 Vespa Douglas. It was a 150 GL but it's now got a PX 125 engine. CBT taken in August and am loving the bike.
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