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

Help Spada bottom end

Discussion in 'Honda 250cc Twins' started by Gizziracer, Aug 7, 2018.

  1. Macdaug

    Macdaug Member

    Messages:
    16
    Likes Received:
    2
    Trophy Points:
    13
    Joined:
    May 6, 2019
    Gender:
    Male
    Location:
    Sunshine Coast
    My Bike:
    VT250 Spadad
    Absolutely dirt cheap, blows my mind they can manufacture these for such a low cost. It's certainly tempting considering a pro rebuild of the carbs would probably cost more.
     
  2. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

    Messages:
    6,397
    Likes Received:
    4,785
    Trophy Points:
    1,148
    Joined:
    May 4, 2013
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Tamworth, NSW
    My Bike:
    1937 Royal Enfield 250, CF Moto 250 V5, Honda's XL250, CBR250, FT500 plus a few others.
    What compressions do you have in the cylinders. If front cylinder wont pull the fuel in it may need the valves resetting or new rings.
     
  3. Macdaug

    Macdaug Member

    Messages:
    16
    Likes Received:
    2
    Trophy Points:
    13
    Joined:
    May 6, 2019
    Gender:
    Male
    Location:
    Sunshine Coast
    My Bike:
    VT250 Spadad
    Testing today will update once completed.
     
    • Like Like x 1
  4. Macdaug

    Macdaug Member

    Messages:
    16
    Likes Received:
    2
    Trophy Points:
    13
    Joined:
    May 6, 2019
    Gender:
    Male
    Location:
    Sunshine Coast
    My Bike:
    VT250 Spadad
    I've got about 175 psi on the rear, and around 160 on the front cylinder (problem carb).
    Manual says 185psi, considering it's done 60k surely enough to pull fuel. I might try swapping jets from rear carb to front and see if it's the jetting or a carb body obstruction.
     
  5. Macdaug

    Macdaug Member

    Messages:
    16
    Likes Received:
    2
    Trophy Points:
    13
    Joined:
    May 6, 2019
    Gender:
    Male
    Location:
    Sunshine Coast
    My Bike:
    VT250 Spadad
    So i've put the carbs back on, looks like there a tiny bit of fuel getting through on open throttle, but not enough to fire the cylinder at idle, or up to revs. Definitely a blocked pilot or similar. @Gizziracer want to sell me some Chinese carbs? :D
     
  6. Gizziracer

    Gizziracer Well-Known Member Contributing Member

    Messages:
    387
    Likes Received:
    251
    Trophy Points:
    273
    Joined:
    May 7, 2017
    Location:
    Sydney
    My Bike:
    Honda vt 250 spada
    What part of Australia are you in?
     
  7. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

    Messages:
    6,397
    Likes Received:
    4,785
    Trophy Points:
    1,148
    Joined:
    May 4, 2013
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Tamworth, NSW
    My Bike:
    1937 Royal Enfield 250, CF Moto 250 V5, Honda's XL250, CBR250, FT500 plus a few others.
    Says Sunshine Coast (QLD) on his profile.
     
    • Like Like x 1
  8. Gizziracer

    Gizziracer Well-Known Member Contributing Member

    Messages:
    387
    Likes Received:
    251
    Trophy Points:
    273
    Joined:
    May 7, 2017
    Location:
    Sydney
    My Bike:
    Honda vt 250 spada
    Are,, yes,, one day i’ll Learn to use all the features of this site.. did someone mention Luddite.. I guess that’s where the attraction to old moto guzzis came from, only had a smart phone for 8 months and still bamboozled by its offerings
     
  9. Macdaug

    Macdaug Member

    Messages:
    16
    Likes Received:
    2
    Trophy Points:
    13
    Joined:
    May 6, 2019
    Gender:
    Male
    Location:
    Sunshine Coast
    My Bike:
    VT250 Spadad
    Well, thanks for everyone's help, after a few days of compression testing, carbies off x 5 times, believe it or not, i only needed to blow out the float bowl breathers (front one blocked), once I did this, the front cylinder started working at idle smooth as silk.
    At least I know the carbs are clean, just need to reset mixtures and balance. Thank again @Gizziracer !
     
    • Nice Work Nice Work x 1
  10. Gizziracer

    Gizziracer Well-Known Member Contributing Member

    Messages:
    387
    Likes Received:
    251
    Trophy Points:
    273
    Joined:
    May 7, 2017
    Location:
    Sydney
    My Bike:
    Honda vt 250 spada
    And the true beauty of the mighty Spada is that after 30 years it will more than likely run perfectly once tuned, start on the button for years, (as long as it’s not left sitting for months unused) and handle like it’s on rails even though it still has the original grease in the steering and swing arm bearings.. totally amazing little bike
     
  11. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,730
    Likes Received:
    2,870
    Trophy Points:
    943
    Joined:
    Mar 18, 2014
    Location:
    Sydney NSW
    My Bike:
    FZR250R 3LN6
    Yes the breathers would do that... you need atmospheric pressure acting on the fuel bowls for the system to work :thumb_ups:
     
  12. Murdo

    Murdo The Good Doctor Staff Member Contributing Member Ride and Events Crew

    Messages:
    6,397
    Likes Received:
    4,785
    Trophy Points:
    1,148
    Joined:
    May 4, 2013
    Gender:
    Male
    Occupation:
    Retired
    Location:
    Tamworth, NSW
    My Bike:
    1937 Royal Enfield 250, CF Moto 250 V5, Honda's XL250, CBR250, FT500 plus a few others.
    Your not alone there. :thumb_ups:
     
    • Agree Agree x 1
  13. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

    Messages:
    5,102
    Likes Received:
    3,472
    Trophy Points:
    1,148
    Joined:
    Dec 23, 2012
    Gender:
    Male
    Location:
    Thailand
    Home Page:
    My Bike:
    Yamaha FZR400 3TJ1, Honda MC22
    It's not that I couldn't work out what all this garbage on my phone does, it's just that if my life had been reduced to wasting what is left of it on such puerile nonsense then I might as well kill myself now.
     
    • Funny Funny x 1
  14. Andych

    Andych Moderator Staff Member Premium Member Contributing Member Dirty Wheel Club

    Messages:
    4,289
    Likes Received:
    2,504
    Trophy Points:
    918
    Joined:
    Oct 6, 2016
    Gender:
    Male
    Location:
    Albury 2641
    My Bike:
    1987 Yamaha SRX250, Honda 1974 SL125 K1, 2022 Triumph Tiger Sport 660
    There is probably an APP for that too...
     
    • Funny Funny x 1

Share This Page