Hi everyone,

I have a broken down 2005 XT660R in Liberia, West Africa. I am not a bike expert, and there are no professional mechanics here (and no parts). When I turn the ignition, the bike tries and very very occasionally manages to start, only to die in a few seconds.

Any thoughts? I have done the basic tests, all to no avail. I think there could be a problem with the fuelling system. The gasoline here is terrible and the tanks rust badly due to humidity. Could this be something as simple as a blocked fuel filter? If so, how would I test it, and can it be cleaned?

Thanks in advance for any help!

Any error on the display?

No error shown on the display. I'm a bit at a loss!

By way of background, basically the bike worked, then worked with a loss of power, then stopped working. At present it will start one in a hundred times, cranking for a long time before doing so and only with the throttle open, and will then quickly splutter to stop.

At some point, the plastic bit that you screw into the tank, where the pipe that leads to the fuel injector joins on, has been repaired. I think it is still airtight. I replaced the TPS as I know XT 660R's had an issue there, and also put in a new battery, but no change. The electrical stuff seems okay, there is no fault code. I'd basically narrowed it down to blocked fuel filter or blocked fuel injector (the gasoline is so dirty and the air so humid) but I don't know much about bike other than reading the manual!

I am not the best one who can help you, but.... just to not be allone there...
can you hear the fuel pump?
do you have a spark?
clean air filter?
battery voltage?

You might not be the best person, but you know more than i do!

I can hear the fuel pump on turning the ignition, as it is meant to. The battery voltage is correct. I think I have a spark (how do i check that?), and the air filter is brand new.

Unscrew the spark plug, connect it with the spark plug wire, ground the side electrode of the spark plug and crank the engine watching for the spark. If it is ok, maybe you can empty your tank in some plastic clear can and see what you will find there, water, dirt�

https://picasaweb.google.com/1135537...eptember112011

here is the guide from the manual, maybe it will give you some ideas

Have you drained the fuel tank & check the fuel or tried new clean fuel?

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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 /
[
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 have drained the fuel tank and tried fresh fuel, but to no avail. It just won't start.

In response to the earlier post, there is a good spark from the plug.

Any other ideas, thoughts on fuel filter or injector issue possibility?

Thanks for help so far!