Bike only starts with one spark plug removed
Results 1 to 13 of 13

Thread: Bike only starts with one spark plug removed

  1. #1
    Registered User Array vancity's Avatar
    Join Date
    Aug 2010
    Location
    North Vancouver
    Bike
    2007 SV650

    Bike only starts with one spark plug removed

    Engine: Inline 4, carbureted.

    Just got the bike out of storage, so my plan this weekend was to get her started. I was going to make sure that my plugs are good, then to maybe change the fuel and finally the air filter.

    So, i removed one of the plug to see if there is proper spark but as soon as i hit the starter, the bike starts on 3 cylinders. I tried this with another cylinder and same thing. It does not start with all 4 plugs in. This didn't make sense to me at all. So from this i assumed that the fuel and the spark plugs are good.

    So i am thinking its the battery? I am going to get a jump from a car battery this morning, to see if that works.

    Anyone had this problem before?


    EDIT: The bike is running now after a boost from a car battery. It started up good now. I should know either tonight or tomorrow if the battery is the problem. Thanks for the help Guys.
    Last edited by vancity; 02-09-2013 at 05:11 PM.

  2. Remove Advertisements
    BCSportBikes.com
    Advertisements
     

  3. #2
    Ridin Dirty Array vstromgreg's Avatar
    Join Date
    Jul 2009
    Location
    BC
    Bike
    K9 Vstrom 1000, 1979 XS100 Special.
    your bike runs on three cylinders..... this would mean the added compression of the 4th cylinder (pug in) is overwhelming the starters power....


    will the bike start in neutral?, sometimes the thickened oil will still grab the slipper clutch.... make it very hard to turn over when still in gear
    Quote Originally Posted by Zug View Post
    Peewee and Kevin from Bayside should get together and start a bike shop called, Fuck you and the bike you rode in on.

  4. #3
    Registered User Array vancity's Avatar
    Join Date
    Aug 2010
    Location
    North Vancouver
    Bike
    2007 SV650
    Ya, sorry. It does not start when all 4 plugs are in.

  5. #4
    Ridin Dirty Array vstromgreg's Avatar
    Join Date
    Jul 2009
    Location
    BC
    Bike
    K9 Vstrom 1000, 1979 XS100 Special.
    Quote Originally Posted by vancity View Post
    Ya, sorry. It does not start when all 4 plugs are in.
    don't be sorry i missed the thread title, my bad


    try it with all 4 plugs in, in neutral?
    Quote Originally Posted by Zug View Post
    Peewee and Kevin from Bayside should get together and start a bike shop called, Fuck you and the bike you rode in on.

  6. #5
    Registered User Array vancity's Avatar
    Join Date
    Aug 2010
    Location
    North Vancouver
    Bike
    2007 SV650
    Yep. In neutral, kill switch in the right position, ect.

  7. #6
    Ridin Dirty Array vstromgreg's Avatar
    Join Date
    Jul 2009
    Location
    BC
    Bike
    K9 Vstrom 1000, 1979 XS100 Special.
    Quote Originally Posted by vancity View Post
    Yep. In neutral, kill switch in the right position, ect.
    when and if you jump it from a car, it's best to leave the car turned off....
    Quote Originally Posted by Zug View Post
    Peewee and Kevin from Bayside should get together and start a bike shop called, Fuck you and the bike you rode in on.

  8. #7
    Registered User Array vancity's Avatar
    Join Date
    Aug 2010
    Location
    North Vancouver
    Bike
    2007 SV650
    Ya definitely

  9. #8
    Registered User Array Mechannibalism's Avatar
    Join Date
    Jul 2010
    Location
    east van
    Bike
    '87 GPZ 400 '87 GSXR 400
    Sounds like the battery or starting system (wire,connector,solinoid).
    You're just a crackpot till you hit the jackpot - Wernher von Braun

  10. #9
    I like traffic cones :S Array made Man's Avatar
    Join Date
    Dec 2005
    Location
    hard in the mac
    Bike
    rsv4r
    Quote Originally Posted by vstromgreg View Post
    your bike runs on three cylinders..... this would mean the added compression of the 4th cylinder (pug in) is overwhelming the starters power....


    will the bike start in neutral?, sometimes the thickened oil will still grab the slipper clutch.... make it very hard to turn over when still in gear
    what carburated inline 4 has a slipper clutch?

    it says he's got an 88 fzr 250... slipper clutch?

    i had issues with my old bike doing similar things at a point. would drop a cylinder or 2 out of the blue.

    plugs would always be covered in soot and shit.

    rebuilt the jets or whatever they are in the carbs, got a new battery.

    bike started to run a heck of a lot better and nowhere nearly as rich aka i got 180km on a tank instead of 120. best 100 or so bux paid for in parts.

    i had those start problems every time pulling it out of storage. hook up your car to and let it rip.
    Last edited by made Man; 02-09-2013 at 02:37 PM.
    "Honda = Boring, Suzuki = Wannabes, Yamaha = Poser, Ducati = Overated, BMW = Compensating, Aprilia = Insecure, Buell = BCIT business... go faKOffee." - PUREVIL

  11. #10
    Registered User Array avocet's Avatar
    Join Date
    Mar 2004
    Location
    New West
    Bike
    2002 vfr800a 2003 duc ss1000ds
    Partially plugged fuel filter?

    If it only runs with a plug out, regardless of cylinder, then maybe added intake draw is using up the restricted fuel supply preventing engine from running? With no plug, there is no vacuum. No vacuum, carb won't draw fuel.

  12. #11
    Registered User Array bandito's Avatar
    Join Date
    May 2008
    Location
    CBR600RR / RVT1000 RC51
    Bike
    CRF 230 BSA 650
    Just put a bolt in place of the sparkplug, and you have a triple. You can pretend it's a Triumph.
    Long Live Shervin Of The North!

  13. #12
    Registered User Array vancity's Avatar
    Join Date
    Aug 2010
    Location
    North Vancouver
    Bike
    2007 SV650
    Bike is running good now, thanks for the help.

    Quote Originally Posted by made Man View Post
    what carburated inline 4 has a slipper clutch?

    it says he's got an 88 fzr 250... slipper clutch?

    i had issues with my old bike doing similar things at a point. would drop a cylinder or 2 out of the blue.

    plugs would always be covered in soot and shit.

    rebuilt the jets or whatever they are in the carbs, got a new battery.

    bike started to run a heck of a lot better and nowhere nearly as rich aka i got 180km on a tank instead of 120. best 100 or so bux paid for in parts.

    i had those start problems every time pulling it out of storage. hook up your car to and let it rip.
    Plugs are in good condition. I get around 180-200 depending on my riding.
    It look like battery might be the culprit. Rode her for about 10mins, seems fine. Too fucking cold outside to ride any longer.
    Quote Originally Posted by avocet View Post
    Partially plugged fuel filter?

    If it only runs with a plug out, regardless of cylinder, then maybe added intake draw is using up the restricted fuel supply preventing engine from running? With no plug, there is no vacuum. No vacuum, carb won't draw fuel.
    I am thinking its what Vstormgreg said. Maybe the battery just didt have the juce to overcome the added compression from the last cylinder.

  14. #13
    Registered User Array vancity's Avatar
    Join Date
    Aug 2010
    Location
    North Vancouver
    Bike
    2007 SV650
    Quote Originally Posted by bandito View Post
    Just put a bolt in place of the sparkplug, and you have a triple. You can pretend it's a Triumph.
    Hahah. Good thinking, i have always wanted a Triumph.
    Last edited by vancity; 02-09-2013 at 05:14 PM.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •