Thruxton 1200r Cold Start Issue

Discussion in 'Technical Help' started by Raybin, Jan 15, 2019.

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  1. Raybin

    Raybin New Member

    Jan 15, 2019
    0
    1
    Queensland Australia
    Hi Guys, i have recently purchased a second hand (3200kms only) 2017 Thruxton 1200R. The bike is just great but i have noticed an issue with starting the bike in the mornings. I live in Queensland Australia, so our climate is not a cold one! However, when first starting the bike from cold this is what happens:
    • Fuel Pump appears to run up correctly with ignition on
    • Starter turns over well with good battery and good speed of turn over
    • Engine does not fire- if the starter is held for say 10 seconds (this appears to be excessive) it may sometimes start.
    • If i try it for say 2 seconds and it does not start- i then release the start push and wait 3 seconds- press the start again and it fires up straight away????
    Has anyone else had this issue? the bike has had its recall regarding "Trottle Blip stalling"
    The bike has a Meerkat xover pipe fitted, the CAT has been removed and Vance and Hines pipes fitted- These were a Triumph dealer fitted option.
    It has just been serviced (3400kms) and the dealer checked the ECU mapping- but found no issues- can anyone help me here.
     
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  2. Helmut Visor

    Helmut Visor Only dead fish go with the flow
    Subscriber

    Oct 3, 2018
    6,095
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    Three Counties
    G'day Raybin, and welcome in :cool::cool: Can't help with your problem I'm afraid but someone way more knowledgeable will be along soon I'm sure. Good luck ;);)
     
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  3. Tricky-Dicky

    Tricky-Dicky Crème de la Crème

    Dec 12, 2016
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    Norfolk UK
    First thing i would check with hard warm/hot start is the ECU temp sensor, this if failed the ECU will give a permanent rich air/fuel mix which make for hard hot start but easy cold start.
     
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  4. Callumity

    Callumity Elite Member

    Feb 25, 2017
    3,358
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    Nr Biggar
    I would imagine in Queensland when you switch off that you get pretty extensive evaporation in your fuel lines. Even with fuel injection it might just be worth pausing a couple of seconds to purge everything from the pump forwards to see if it changes its starting characteristics when you spin it up. Your cold is our hot!
    I am not sure if initial advance is worth adjusting for tropical conditions.
     
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  5. Raybin

    Raybin New Member

    Jan 15, 2019
    0
    1
    Queensland Australia
    Mine appears to be just first start in the morning if it has run any time in the past 4 to 6 hours it never fails to start. Also the fact that it starts straight away on the second attempt would seem to rule out a temperature sensor issue...
     
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  6. Raybin

    Raybin New Member

    Jan 15, 2019
    0
    1
    Queensland Australia
    Thanks, if I ride it to work and leave it standing for 8 hours it doesn't seem to have any starting problem ... But if I leave it overnight then I seem to have to follow the 2 start attempt routine to get it to fire up... I'm a bit baffled I will keep trying to pin down the exact sequence of events and times between starts.... The bike otherwise runs great and is great fun to ride
     
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  7. Callumity

    Callumity Elite Member

    Feb 25, 2017
    3,358
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    Nr Biggar
    Overnight humidity?
     
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  8. Tricky-Dicky

    Tricky-Dicky Crème de la Crème

    Dec 12, 2016
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    While i am not familiar with the foibles of motorcycle EFI systems i am very familiar with cars base systems so i would first ask if fuel pressure is only pump controlled, or has a vacuum FPR? could be down to this or weak pump.
     
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  9. Raybin

    Raybin New Member

    Jan 15, 2019
    0
    1
    Queensland Australia
    Worthwhile considering, but doesn't seem to explain why second attempt start seems to work straight away?
     
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  10. Retired Phil

    Retired Phil Well-Known Member

    Jun 22, 2017
    211
    93
    San Rafael
    on my 2016 TTR, it has always been when first time out of the garage, crank over once very shortly. then second crank and she fires up. unless it has been on the battery tender over nite, then first tick and she starts fine. during the day it immediately starts on first try. its just the nature of of the beast. guess it just likes a fully charged battery. almost 3 yrs on orig battery and thats the normal starting routine.
     
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  11. Sprinter

    Sprinter Kinigit

    Aug 17, 2014
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    uk
    Doesnt seem like a big problem. Do you leave it on the side stand?
     
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  12. Raybin

    Raybin New Member

    Jan 15, 2019
    0
    1
    Queensland Australia
    Yes I leave it on the side stand
     
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  13. Raybin

    Raybin New Member

    Jan 15, 2019
    0
    1
    Queensland Australia
    Sounds like exactly the same problem !! It seems that you have obviously accepted that this is how you start it... And yes, mine too will start second time after this short crank.... I guess I just want to know why? If you have to crank it first and then again a second time surely the battery is lower on voltage at the second time than the first??? How can it be any other way? These bikes are pretty hi-tech despite their beautiful old Cafe racer styling.... Surely they should be able to start first time....
    I am interested to hear that if you have it on a battery tender overnight that it will fire up first time.... There is something here that holds the answer and yet it would appear not necessarily voltage related... Hmmmm.... Thanks, your comments are leading in the right direction...
     
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  14. Sprinter

    Sprinter Kinigit

    Aug 17, 2014
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    Try centre stand and it will fire right up. side stand is for out and about, short stops.These are high tolerance machines.
     
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  15. Raybin

    Raybin New Member

    Jan 15, 2019
    0
    1
    Queensland Australia
    I don't have a centre stand, can't see quite how this could affect the starting.... I would generally start it when sat astride it with sidestand up...
     
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  16. Red Thunder

    Red Thunder Crème de la Crème

    Dec 2, 2014
    2,035
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    High Wycombe
    Random suggestions...

    Maybe spark plugs?
    Do you Ausie guys use a cooler spark plug, maybe change to the alternative grade?
    Maybe check the gaps or refit with NGK iridium for cleaner start
     
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  17. Tricky-Dicky

    Tricky-Dicky Crème de la Crème

    Dec 12, 2016
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    Norfolk UK
    Reading this it goes to show just how much tech and because of it peoples expectations have changed, when i only rode bikes that had a kick start i thought myself lucky if it started in the first five kicks, and later when the first electric starts came out i was lucky that i (usually) didn't have to kick it as an alternative.......now if it doesn't start on the very first prod of the button its got a problem....strange!:(

    Even now because my 43 year old T160 starts first kick most of the time i am chuffed to bits.....but if it takes longer its not got a problem.;)
     
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  18. Retired Phil

    Retired Phil Well-Known Member

    Jun 22, 2017
    211
    93
    San Rafael
    No side stand on the Thruxton R
     
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  19. Retired Phil

    Retired Phil Well-Known Member

    Jun 22, 2017
    211
    93
    San Rafael
    yup, on tender first time. no tender second time. fine with me.
     
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  20. Sprinter

    Sprinter Kinigit

    Aug 17, 2014
    6,026
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    uk
    Even if you throw a leg over then put on your gloves then start the bike. Just to give it time to level out
     
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