1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Honda Spada VT250

Discussion in 'Honda 250cc Twins' started by marc, Mar 8, 2014.

  1. marc

    marc Member

    Messages:
    48
    Likes Received:
    8
    Trophy Points:
    18
    Joined:
    Mar 8, 2014
    Gender:
    Male
    Location:
    Tasmania
    My Bike:
    05 Hyosung GV250 Aquilla
    i recently bought a honda spada 250 and am having mechanical problems with it when i got it it could only be run started but it did run and wouldnt start off key i have since bought a new battery for it and it seems i am only getting spark too one side of the bike the right side i bought another set of coils thinking that was the problem still same thing i stripped the wiring back and that seems as it should be according too the wiring diagram i have rebuilt the carbys since getting it and recently bought a set of pulse generators for it still same problem but if i piggy back the coil too the right side both spark nicely when i hook it back to the left side i can some times get a small spark from that side then it wont spark again does anyone have any idea what it could be the only things i havent replaced yet is the regulator/rectifier and the magneto and cdi box need help please as i am stuck on how to fix it or what it could be
     
  2. Joker

    Joker See "about me" for contact details. Contributing Member

    Messages:
    2,737
    Likes Received:
    1,399
    Trophy Points:
    798
    Joined:
    Feb 2, 2014
    Gender:
    Male
    Location:
    Switzerland
    My Bike:
    SV1000SK3
    I'm not an expert at this but having done a number of electrical tests recently I'll convey what I think I know, hoping someone will correct me if I am wrong :)

    I can't see how it would be your reg/rec or your magneto/stator; The stator generates AC current to the reg/rec which converts it to DC then charges your battery, but your symptoms seem to be unrelated to this.

    I think you should grab a multimeter and run some resistance tests on your HT leads (just to be sure), check your spark plugs (don't know if you've already checked the plug gaps and for fouling etc) and as your coils are new (I'm assuming you replaced both) your next bet is to check your spark/CDI unit:

    Capture2.JPG
    Capture.JPG

    My gut feel is that your spark unit is probably only doing the right thing to one of the coils, as you said if you put both coils on the one side and got good spark... then it seems a pretty logical next step to me.
     
    • Like Like x 1
  3. marc

    marc Member

    Messages:
    48
    Likes Received:
    8
    Trophy Points:
    18
    Joined:
    Mar 8, 2014
    Gender:
    Male
    Location:
    Tasmania
    My Bike:
    05 Hyosung GV250 Aquilla
    have put brand new plugs and leads on it just hope its not the cdi box
     
  4. Joker

    Joker See "about me" for contact details. Contributing Member

    Messages:
    2,737
    Likes Received:
    1,399
    Trophy Points:
    798
    Joined:
    Feb 2, 2014
    Gender:
    Male
    Location:
    Switzerland
    My Bike:
    SV1000SK3
    Test it and see... but if you've done all that I can't think of anything else it could be...
     
  5. Th3_Huntsman

    Th3_Huntsman Senior Member Contributing Member

    Messages:
    2,428
    Likes Received:
    1,173
    Trophy Points:
    823
    Joined:
    Jul 1, 2013
    Gender:
    Male
    Occupation:
    Dispatch Manager
    Location:
    Beenleigh
    My Bike:
    NONE
    Just throwing it out there... Starter solenoid? Have you tried shorting it with a screwdriver to see if that fires her?
     
  6. kiffsta

    kiffsta Senior Member

    Messages:
    9,066
    Likes Received:
    6,872
    Trophy Points:
    1,168
    Joined:
    Aug 7, 2010
    Gender:
    Male
    Location:
    Brisbane
    you could try tracing the wire from your ingition coil back to thr cdi and make sure the wire isnt broken, you could prove the harness theroy by swapping the wires to the coil, that would at least rule out the cdi or prove it eitherway
     
  7. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

    Messages:
    10,929
    Likes Received:
    6,720
    Trophy Points:
    1,168
    Joined:
    Jun 14, 2012
    Gender:
    Male
    Occupation:
    Between a Rock and a Hard Place
    Location:
    North by NW NSW Oztralia - Tamworth
    My Bike:
    *Kawasaki ZXR250C *Yamaha FZR250R 3LN1 *Yamaha FZR400 *Triumph Bonneville 750 T140V *Triumph Daytona 675 *Triumph Tiger 800XC
    Yea before u replace any more components , take a close look at the wires and connections for damage , corrosion etc. ... and as mentioned above , especially around the CDI and starter solenoid , fuses etc ..... how about the earth lead and its fixing points?
     
  8. marc

    marc Member

    Messages:
    48
    Likes Received:
    8
    Trophy Points:
    18
    Joined:
    Mar 8, 2014
    Gender:
    Male
    Location:
    Tasmania
    My Bike:
    05 Hyosung GV250 Aquilla
    ok so here is where i am at with the spada so far since i have had it i have replaced air filter spark plugs and leads fuel filter rebuilt carbys checked wiring stripped it right back everything is ment to be where it is fresh fuel replaced the pulse generators replaced the regulator rectifier new battery another cdi unit the only thing i havent tried is the stator still same result only spark on right side sometimes i will get a blue spark flash once then goes i tried to run start it in 2nd gear then tried in 3rd but sometimes it will compression lock up on the back wheel for some reason when i first got it was able to run start now cant even do that i dont know what else to try not sure if timing could be out causing problems also cant figure out which is cylinder 1 and which is cylinder 2 also changed coil packs over aswell really am stuck with this
     
  9. Joker

    Joker See "about me" for contact details. Contributing Member

    Messages:
    2,737
    Likes Received:
    1,399
    Trophy Points:
    798
    Joined:
    Feb 2, 2014
    Gender:
    Male
    Location:
    Switzerland
    My Bike:
    SV1000SK3
    1. If your spark plugs are new, they're good. Not them. If they were the old ones and the bike used to run with them it probably wasn't them either.
    2. If your HT leads are new, are connected to the **CORRECT** cylinders and have the resistances required by the manual it won't be them either. Poor spark is likely to be a poor lead, cap or plug before it's likely to be the coils, CDI etc.
    3. If both coils spark properly, regardless of how they are connected (eg piggy back of the RHS like you said) then it shouldn't be them.
    4. The supply of current to the coils seems to be a problem if it is only going to one side and not the other. So, provided that your battery is not completely flat, the fact you are getting a current somewhere probably means it's not your battery or your stator. But it would be a good idea to check the stator anyway.

    So what supplies the current to the coils on your bike? That is likely to be an equivalent of an igniter which is part of your CDI unit. So if you've replaced the CDI and you know it's OK (you could test it to make sure) the only issue seems to be the wires from the igniter to the LH coil? Logic to me says it can't be anything else?

    Typically if you're sitting on the bike the LHS cylinder is probably #1. Check your manual. Manuals are your friend.

    I mean no disrespect by this but your sporadic approach to this problem tells me you haven't really read up on how everything works and how you can systematically troubleshoot this problem. It's too hard for someone like myself to do remotely - you need to structure your approach so we can help you.

    Take a deep breath and start at the beginning. You'll get there with a bit of patience and logic.

    If you haven't touched the timing then it shouldn't be a problem. Bikes just don't go out of timing. It's more likely to do with point #2 above so ensure you've got that correct.
     
    • Like Like x 1
  10. marc

    marc Member

    Messages:
    48
    Likes Received:
    8
    Trophy Points:
    18
    Joined:
    Mar 8, 2014
    Gender:
    Male
    Location:
    Tasmania
    My Bike:
    05 Hyosung GV250 Aquilla
    yeah mate not good with bikes this is my second but never had to work on them and not very good with electricals i printed out a huge diagram anll the wires are ment to be where they are i tried to run a new wire from the cdi no difference also not the smartest with multi meters ethier but am learning it cant be much else wrong with it now will try and do more reaseach but where to start is the hard thing i dont want to be going over things i already checked

    i ran a 12 volt circuit tester over it today and tested the stator wires they light up but very dole power from them too the regulator rectifier
     
    Last edited by a moderator: Mar 23, 2014
  11. kiffsta

    kiffsta Senior Member

    Messages:
    9,066
    Likes Received:
    6,872
    Trophy Points:
    1,168
    Joined:
    Aug 7, 2010
    Gender:
    Male
    Location:
    Brisbane
    I'd be looking at 2 areas, the first being the pulse generator and this is the beginning of the spark circuit, its on the RH side of the engine and you will have to remove the rh side engine cover, if that tests okay, then maybe there is a break down in your loom between the cdi and the coils, I would hook up a multi meter on continuity (audio is best) and move the harness around, if the sound drops while moving it, then you may well have a broken wire in the loom

    vt250f_spada_pulse.PNG
     
    • Like Like x 1
  12. marc

    marc Member

    Messages:
    48
    Likes Received:
    8
    Trophy Points:
    18
    Joined:
    Mar 8, 2014
    Gender:
    Male
    Location:
    Tasmania
    My Bike:
    05 Hyosung GV250 Aquilla
    will give that ago i was leaning towards it being the stator because using the 12 volt circuit tester the light was very dim as stated before so not sure if thats not getting enough power too the regulator rectifier and only sending out enough power to one side on dc current sometime i will get small spark from left side so that would meant the cdi is working i have power from the 2 positives and 2 negitives coming from the cdi box so i know thats working other wise there would be no power stator is only thing i havent replaced as yet but i still think its electrical will try read up on the manual and see if i can find anything else
     
  13. marc

    marc Member

    Messages:
    48
    Likes Received:
    8
    Trophy Points:
    18
    Joined:
    Mar 8, 2014
    Gender:
    Male
    Location:
    Tasmania
    My Bike:
    05 Hyosung GV250 Aquilla
    ok so here is where i am stuck the 2 wires that run too the pulse generators i bought a new multi meter and done a continuity test (beep) test on it and when i put the negitive and positive on too the yellow and yellow/whit the bike starts up straight away but the moment i take the prongs away it dies what could it be
     
  14. kiffsta

    kiffsta Senior Member

    Messages:
    9,066
    Likes Received:
    6,872
    Trophy Points:
    1,168
    Joined:
    Aug 7, 2010
    Gender:
    Male
    Location:
    Brisbane
    okay, continuity should be done from the where the pulse generator enters the loom, try and work out colour wire it is, then unplug the cdi and find the corresponding wire at the other end then perform the test, you should try and move the loom while the probes are connected to see the beep drops out, that will tell you if the loom is fine.

    The next test is to use your meter to check the resistance on the pulse generator, unplug it from the loom and set your meter to Ohms, it looks like an upside down U with little curls on the end, you want to measure between the yellow\white and blue white wires on the ohm setting, if its good, you should see resistance of 310-390 ohms

    http://2fiftycc.com/index.php?resources/honda-vt250l-spada-workshop-manual-part-3.241/
    download the manual, have a look at section 16, there are some pics and step by step instructions to help troubleshoot it
     
    • Like Like x 1
    Last edited: Mar 25, 2014
  15. marc

    marc Member

    Messages:
    48
    Likes Received:
    8
    Trophy Points:
    18
    Joined:
    Mar 8, 2014
    Gender:
    Male
    Location:
    Tasmania
    My Bike:
    05 Hyosung GV250 Aquilla
    ok when i plug the test probes in i get a reading of abit over 400 thats continuity and it starts up but it wont start with any other wires but yellow yellow/white yellow white has to be negitive and yellow positive or it wont go
     
  16. marc

    marc Member

    Messages:
    48
    Likes Received:
    8
    Trophy Points:
    18
    Joined:
    Mar 8, 2014
    Gender:
    Male
    Location:
    Tasmania
    My Bike:
    05 Hyosung GV250 Aquilla
    i checked all wiring it checks out fine not sure what else to try i even tryed to hook a 9 volt battery too it and see if that worked and it doesnt work will only worked with multi meter
     
  17. marc

    marc Member

    Messages:
    48
    Likes Received:
    8
    Trophy Points:
    18
    Joined:
    Mar 8, 2014
    Gender:
    Male
    Location:
    Tasmania
    My Bike:
    05 Hyosung GV250 Aquilla
    ok so i tryed to do abit more testing on it i wired the cdi negitive earth straight too 12 volt negitive still need multi meter to start yellow white /yellow wires it fires up with meter on but if i hook solid yellow and white blue negitive wires together it will fire up again with meter so thats 1 wire each pulse gen seems to be wiring but have tested all i can think of dont know what else i can try
     
  18. marc

    marc Member

    Messages:
    48
    Likes Received:
    8
    Trophy Points:
    18
    Joined:
    Mar 8, 2014
    Gender:
    Male
    Location:
    Tasmania
    My Bike:
    05 Hyosung GV250 Aquilla
    ok update she runs like a dream some dick head before me hit the little fins on the fly wheel where the pulse gens are it has to pass the pulse gens to create the spark i bent a few out and it started like a dream thanks for all you help people
     
    • Like Like x 3
  19. kiffsta

    kiffsta Senior Member

    Messages:
    9,066
    Likes Received:
    6,872
    Trophy Points:
    1,168
    Joined:
    Aug 7, 2010
    Gender:
    Male
    Location:
    Brisbane
    Legend, I was running out of ideas...

    good to hear its sorted
     
  20. marc

    marc Member

    Messages:
    48
    Likes Received:
    8
    Trophy Points:
    18
    Joined:
    Mar 8, 2014
    Gender:
    Male
    Location:
    Tasmania
    My Bike:
    05 Hyosung GV250 Aquilla
    lol was running fine not now lol was around my mates house the other week left about 2 am and it wouldnt start checked it out a couple of days later i managed to get it running after alot of mucking around ran like **** wouldnt idol properly but was fine when riding could get full revs and now wont go at all so i did my check list have nice spark from both plugs carby getting plenty of fuel i took carbys off and cleaned them out drained out the petrol i did fill it up the other day and fuel was dark pink so thought that could be a reason still same problem so if its getting fuel and spark what else could the problem be got me stumped only thing i can think of was i may have knocked the timing on it when i had it apart
     

Share This Page