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Post by rhinomike on Jul 11, 2012 22:43:08 GMT -6
I bought a Haynes manual(2760) that does not list specs for the Tank, but hoped that they are the same as the Daelim model S2-250. Specifically, I need the Ignition coil primary and secondary resistance specs. My scooter isn't getting spark and when I tested primary, it was .6 - .7 ohms, and secondary was 7.73k. The carb is getting fuel (took it all apart anyway to check everything and cleaned it). The vacuum actuated fuel pump is working. Just FYI - have had no problems with her since I bought her new in 2007(15,000 Chinomiles!). Suddenly started dying while riding. Her nickname is: Champagne - Supernova
I guess if someone knows of a manual that addresses Tank brands, that would be a good thing for me as well.
The numbers on the coil are: SMDX125CJ-12 1007 06040 1
My internet searching is coming up with a lot of dead ends. I think I saw where Tank brand has gone under?
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Post by richardthescooter3 on Jul 12, 2012 6:46:59 GMT -6
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Post by JR on Jul 12, 2012 6:53:08 GMT -6
Yes Mike Tank went under some time ago. Also just like a lot of Chinese scooter people Tank made some manuals but a lot of them were generic and very vague and only listed in general information but Tank did put out one extremely helpful service manual for their scooters up to 150cc. The Lance Duke is a carbon copy of the Tank touring 250 and here is it's manual on the Lance manual location; thescooterprofessor.proboards.com/index.cgi?board=5200&action=display&thread=770But no engine specs. Now here is the Tank manual location and click on the 50 to 150cc service manual and even though it's not for the 250 scooter they do list coil specs on page 164 and it's highly possible that Tank used the same coil for the 250? thescooterprofessor.proboards.com/index.cgi?board=5200&action=display&thread=771 Now here is another manual you can check and it will be the Honda Helix Shop manual because it is the same engine that is in your Tank even though it is a cloned engine on page 194 is coil specs. thescooterprofessor.proboards.com/index.cgi?board=ncmanuals&action=display&thread=415Now tests on coils are generally all over the place and sometimes not very reliable. Have you checked to see if you have 12VDc to the CDI? This is a DC powered CDI system and you should have 12Vdc on the black wire on the CDI. Also you need to check to make sure you have AC on the pick up coil wire to the CDI from the stator. We're here to help and keep us informed. JR |
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Post by shane772 on Jul 12, 2012 7:29:00 GMT -6
:DThanks for the replies to this thread, it helped me out and I just joined last night.
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Post by JR on Jul 12, 2012 8:16:57 GMT -6
Your welcome and don't be a stranger! Glad you joined and if You've got a problem then let us see if we can help. I see you're from big T-town in Okieland. Been there in fact used to drive to Tulsa some when I was doing work out in Enid Oklahoma for Advanced Foods. Going west that way it starts getting empty, and lots of fields oil wells and rolling hills. Winters will cut you like a knife!
JR
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Post by rhinomike on Jul 14, 2012 18:29:18 GMT -6
Well, I looked thru all of the recommended manuals you suggested. However, without knowing which one is the right one, it's hard to conclude if my parts are bad or not.
Forgive the length, but I would like to give you a brief history of how the scooter was behaving and see if I'm on the right track.
One day, when I was 98% home from my 30minute commute, upon letting of the gas to make a turn, it just died. I started it back up and continued until I let off the gas at the top of a hill, and it died again.
I changed the fuel filter and thought I was good. I think I even made a couple of more round trips to work and no issues. I was on the way home another day, and after waiting at a stop light, when I gave it gas, it died. It started, but would die if I gave it gas. Pushed it to the gas station (across the street) and filled up, thinking maybe it was out of gas (it was only about half empty). But, it went all the way home without issue.
I took the fuel filter of and planned to buy better one in a few days. I took it around the block and no issues. I tried to take it to work the next day, and while it was just idling in the driveway while I ran in the garage to shut the garage door, it died, and would not start.
I took off the carb (ugh!) and took it completely apart, cleaned it, and put it back on, but it would still not start (turns over, just doesn't start). The first time doing the latest checks, I swear it had spark, but when I checked it a couple days later, no spark.
So here's when I started digging into how to back into where the problem might be. The manuals all say there is really no way to check the CDI. I measure resistance on the exciter/pulse/trigger coil (the thing in the engine flywheel, and measures 118. I just pulled the kill switch apart and perminately bypassed it's functionality. But again, my lack of good specs keeps me from making any conclusions.
So, I guess if someone good just make me feel good that it's either the ignition coil and/or the CDI, I will just buy both.
Any more recommendations for where to buy parts would be most appreciated. My google searches with the part #'s has not been fruitful.
Again, sorry for the long post.
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Post by tvnacman on Jul 14, 2012 19:08:10 GMT -6
do you have pics of the parts you need ? post them I may have them .
John
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Post by JR on Jul 14, 2012 20:30:07 GMT -6
I just pulled the kill switch apart and perminately bypassed it's functionality. But again, my lack of good specs keeps me from making any conclusions
Bypass? You do know that the kill switch works by "grounding" out the CDI? Now do you have this scooter opened up so you can see the CDI?
Also this is a DC powered CDI so any interuption in the DC supply voltage means dead scooter. The 12Vdc comes from the key switch when on. If this wire is loosing connection no spark.
Now since this started all of a sudden I'm suspecting loose wire or connection. Also the kill switch can indeed go bad and stick in the engine kill position which means no spark Also the number of wires to the kill switch and colors.
What I need to know is the color of the wires on the CDI and how many plugs to it, is it a single plug or has two plugs. Also the number of wires to the kill switch and colors.
Tank did things a little different and there is no manual so I'm going on knowledge of it's sister scooter the Lance 250 touring and knowledge of what is common on a lot of 250's.
If the kill switch wire is rubbing anywhere it'll ground out the CDI thus no spark.
CDI's, coils, are easy to replace and can go bad, you've got a jewel, 15k and 5 years old but I like to eliminate all the possible cost nothing possible problems to insure that you need to buy any part. Very discouraging to buy and replace things and then find out later it was just a bad connection or wire.
Also with the number of wires on the CDI and plugs we can find one that works for sure. Coil should be easy.
JR
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Post by alleyoop on Jul 15, 2012 3:08:35 GMT -6
Nobody has mentioned it but Have you tried adjusting the Valves. With those miles on it and if you have never had you valves adjusted it could just be it is looseing compression and they will not hold low rpms when hot.
Alleyoop
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Post by rhinomike on Jul 15, 2012 22:18:27 GMT -6
Yes, from most of the wiring diagrams I've looked at, I concluded that the kill switch just grounded out the CDI. So, I just pulled the two wires from the kill switch, Black/White (coming from the CDI) and the green wire (ground), and cut and taped them off separately.
Yes, I found the CDI and traced every wire to it's origin (pain).
Five wires come out of the CDI:
Green - ground
Red/White - going to the pulse coil/trigger coil/pickup coil
Yellow/Black - going to the ignition coil then onto spark plug
White/Black - Kill switch
Black - 12vdc (with the ignition switch in "on" position only)
The CDI has two plugs, a four terminal square plug (3 are used: ground, pulse coil, ignition coil) and a two terminal plug (ignition 12Vdc power and the kill switch)
The ignition coil also has a ground wire going to it and two terminals.
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Post by JR on Jul 15, 2012 23:22:25 GMT -6
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Post by rhinomike on Aug 9, 2012 23:03:36 GMT -6
I just wanted to follow up by saying thank you again for all of your help. I replaced the CDI and coil, and that fixed it.
Just FYI Maybe there's another place for this, but... While I was replacing my front brake rotor, I noticed my tire was wearing funny (bumps all along the middle of the tire). Then I realized the tire way under inflated. That's what caused the tire to wear badly. Moral, check the tire pressure in your tires. I never checked the front because it never looked low!
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Post by JR on Aug 10, 2012 10:36:00 GMT -6
Right on Mike glad your 15k scooter is up and on the road again! Job well done.  JR |
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..BAD TO THE BONE..