Q Why is my Tri­umph so hard to start?

Motorcycle News (UK) - - Garage -

I own a 2004 Tri­umph Day­tona 955i with un­der 6500 miles on its clocks. The prob­lem is that it’s hard to start. Some­times it will fire-up after five or six at­tempts, other times it will not start at all. Once it’s started it will run fine and restart OK when the en­gine is hot. I took it to a lo­cal dealer who fit­ted a new fuel level sender and reg­u­la­tor/rec­ti­fier – the sec­ond one in two years. Dave Hail­stone, email

A An­swered by Adrian Clancy, To­tal Tri­umph You need to com­pletely drain your tank and dump the fuel, (the ethanol con­tent in un­leaded is caus­ing big prob­lems on older bikes with low mileage) re­place the fuel fil­ter in­side the tank, add about five litres of fresh fuel and fit a new set of spark plugs. Check the air fil­ter while the bike is stripped down. Make sure the bat­tery is fully charged and the air tem­per­a­ture and coolant tem­per­a­ture sen­sor con­nec­tors haven’t got mixed up and plugged in the wrong way around... it hap­pens!

Also, the air tem­per­a­ture sen­sor and coolant tem­per­a­ture sen­sor should give the same am­bi­ent tem­per­a­ture read­ing on a bike that’s not been run for sev­eral hours. That can only be viewed on the Tri­umph di­ag­nos­tic tool.

After it’s run­ning you need to check the AC volt­age out­put from the sta­tor, it should be ap­prox­i­mately 16 volts AC at idle and about 90 volts AC at 5000rpm. There should be no cir­cuit be­tween each phase of the sta­tor and earth. There’s a very small chance the idle con­trol step­per mo­tor may have seized. This too can be checked on the di­ag­nos­tic tool.

Ethanol con­tent in un­leaded can play havoc with bikes

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