Can anyone shed any light on the following?

Suddenly my XT is taking ages to start. You crank it over and over and eventually, when the battery is nearly dead, it will start but has to be revved to keep it going. However, no matter what you do, it will die again and then takes a couple minutes of prodding again before it restarts.

I've changed the battery and spark plug which was before this fault ocurred. Even with a fully charged battery it does the same every day. However once it is warmed up, it will happily restart every time until left for a few hours.

Any ideas?

Thanks in advance.

Is your bike fitted with a power commander? if so check the wire that goes from the PCIII to the tps see if that makes a decent connection.

Failing that your starter motor could be the fault.

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If you cahnged the Battery and the spark plug before you had this problem, then have you got the right plug? Gap set ok? Maybe its a dodgy battery?

I would get the battery checked and try your old plug again.


Nick.

Thanks for the replies.

The battery seems fine as it's taking it's charge from the Optimate and changes from charge to maintain as expected.

The plug is the right one, gapped correctly and the colour is in line with what it should be - light greyish. I've ordered another one just in case I have a dodgy one.

I can't see it being the starter motor due to the sequence of when it starts and then it starts fine after warming up.

Hi Biaggi

what mileage as your bike done ?

Just over 12,000. Recently serviced too.

First of all what mods are done to your bike?

What are the coolant & air temp readings in the dash when it is cold? Is it in line with the ambient temperature?

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Mods that I have done to my XTX's

My 04 XTX
Stage 1 & 2 DNA filters / Kev fuel mod / snorkel mod / Drilled air box mod / Engine breather mod / Fork Spacer mod / 15w fork oil /
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My 07 XTX
Raptor 700 cylinder 102mm / Modified Crank Case to take a 105mm Raptor Cylinder / 11:1 102mm JE Raptor piston / Stage 1 Raptor Hot Cam / Ported head / Colder Spark Plug / +2mm Throttle body / DNA stage 1 & 2 filters / Modified Air Box / Snorkel removed / Worry Brothers stage 2 filter cover / 6mm & 8mm Bolts Replaced with Titanium Bolts / Recovered seat in Black / O2 Eliminator /

My 09 XTX
59HP at the rear wheel / Stage 2 Raptor Hot Cam / DNA stage 3 Air Box / Carbon Can Exhausts / Modified Exhaust Link Pipes / PCIII With Custom Fuel Map / Wideband Commander O2 Data logger / LCD100 Dyno Jet display & fuel adjuster / 2500 OHM HT lead instead of a 10K OHM XT lead / Extra Coolant Cooler / Protaper Fat Bars / Tail Tidy With LED Tail Light / OKE Protection Knobs / LED indicators / AIS blocked / Modified rear sprocket rubbers / Rear Foot Pegs removed / 09 ECU With 02 Sensor Changed To A 06 ECU / Complete wiring harnes Changed from 09 to 04 / Home made LED resistor flasher / Hole drilled in the fuel tank filler neck to allow quicker filling / Modified Bar End Weights / Progressive front fork springs, 15W fork oil, forks lowered 25mm, used XTR rear links lowering the rear 20mm, rear spring one click stiffer / Changed front & rear guards from blue to black / 47T rear sprocket / Speedo Healer V4.0 / Kev throttle cam mod / Throttle grip mod / The new 2010 O2 sensor mod is out, works a treat, The new 2012 O2 Controller is out, PM me for details

Now ride a 2018 MT09SP ABS + TCS

My KTM 990 SMR Mod book. http://www.ktmsmt.com/viewtopic.php?f=13&t=4946

I did have your fuel mod, K&N filter and snorkel removed. I removed the fuel mod and refitted the snorkel. I put the settings back to standard (I can't recall the temp readings) but it made no difference.