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Jul 14

Posts: 1

Monxton says:

Triumph ST 1050 Problem

My Triumph is reluctant to start, then does not run sweetly for first minute or two, then's fine.  New battery 2 months ago, kept on "smart" charger spins the engine well.  Several good doses of injector cleaner and new plugs have made no difference. 
Any suggestions?  :wacko:

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  • Posted 76 days ago (09 July 2014 21:36)

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Mar 09

Posts: 8934

jaffa90 says:

cold start

Welcome Monxton, no experience on fuel injection but your bike has many sensors to give the correct (lean) mixture.

From what you state it could be a temp sensor, (air box or engine or coolant one) giving the wrong info on a cold start.

kcmc on here will have more idea.   


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Jan 08

Posts: 7539

kcmc says:

Triumph ST 1050 year?

Hi Monxton and welcome to the site:smile

Think the first port of call has to be the fault codes(have you checked for a fault code)then as Jaffa says a sensor problem,probably the temperature sensor telling the ECU to richen the mixture at start up(used to be the choke)also check the stick coils, and the crank pulse coil sender.Good Luck

KCMC :tongue:

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Aug 02

Posts: 498

Dabbsy says:

1050 problem

It sounds like either the idle speed stepper motor or the throttle position sensor is out of adjustment.
A dealer will be able to check the settings with the diagnostic tool and readjust the stepper motor or throttle position sensor to the correct settings.
It's a fairly straight forward job, takes about an hour.



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