Re: KTM Duke 390 - Ownership Reviews and Experiences

It's a easy process, why not try DIYing?
They may charge 1000-1600 approx
Consider changing fuel filter also..

Re: KTM Duke 390 - Ownership Reviews and Experiences

I'd recommend you start changing your inline fuel filter, then a thorough throttle body clean, which would yield good improvement. Throttle body cleaning would cost approximately 1000-1200 depending on the supplies used for the cleaning procedure. A well versed local mechanic can do it at approx 500 to 600 as mostly they don't use the costly cleaners that are required. But nonetheless, if the job is done correctly, it can significantly improve and bring back the old feel to the bike.

Cheers!
VJ

Re: KTM Duke 390 - Ownership Reviews and Experiences

I would love to do it myself but I do not have much mechanical knowledge, so I fear opening up the bike myself.
I wish I could do this DIY just like you.

Re: KTM Duke 390 - Ownership Reviews and Experiences

This is reasonable cost as we do not need to get the throttle body cleaned often. My duke's engine is really doing good but I was missing the urgency and crispness in throttle.
Looking to get this done by end of this month, will update about the results.
Thanks

Re: KTM Duke 390 - Ownership Reviews and Experiences

buy 3M carb cleaner ( sensor safe ones only- else car throttle body cleaners ). i have a 3M one. bought off amazon for 400 bucks odd. throttle body cleaning would be like once in 30K km however also depends on air and fuel quality.

buy that and take that to svc. ask them to open the throttle body part and spray yourself. it will clean up like new in seconds.. that it. that bottle will last you atleast 10 times.

Re: KTM Duke 390 - Ownership Reviews and Experiences

Hi all,

Recently I have changed my Front disk rotor plate as the old one got bent. But after putting in the new rotor disk plate, my speedometer is acting all crazy.
Even while riding at slow speeds of 30-40 Kmph, speedometer oscillated between 40 and suddenly changes to 50 and again comes back to 35.

At constant speed on highway the speedo keeps jumping and never remains constant.

I checked the stator coil voltage with a multimeter and it seems fine and as a matter of fact I changed it just 6 months ago.

Any idea why this issue pops up? could it be something with front disk rotor plate.

Your help is much appreciated. Thanks in advance.

Re: KTM Duke 390 - Ownership Reviews and Experiences

Can u specify the quantity of 3m carb cleaner?

Re: KTM Duke 390 - Ownership Reviews and Experiences

How will you clean 10 times with this? And its recommended to clean the TB fully at every 10k kms. Please don't misguide people.

Re: KTM Duke 390 - Ownership Reviews and Experiences

This cleaner will last for 2 times if you clean the TB properly !

Re: KTM Duke 390 - Ownership Reviews and Experiences



TB every 10k for duke 390 ? isint that a too early. does the Manual mentions the same ????

Re: KTM Duke 390 - Ownership Reviews and Experiences

The front wheel ABS sensor is the same sensor that relays speedo information to the ECU which then signals the speedo. If the installation job was done shoddy, i.e. the ABS tone ring was damaged or warped or simply the ABS sensor isn't installed properly can throw up all sort of speedo error conundrum. Start off by checking the ABS sensor itself for proper fitment, check the ABS ring for any warpage, or nicks on the rings, and thirdly make sure all the bolts that fix the rotor to the wheel are torqued in to the right spec. Keep your observations posted.

Aman, actually, TB requires cleaning depending on the "requirement" and not what manual says. Do we always go by the book? I don't think so. Fuel quality, riding conditions, riding style, frequency of services carried out all way to differ in the 10k mark. With fuel quality that we have is to to least here in India, a throttle body cleaning can definitely be warranted.

Secondly, it cannot be used 10 times Aman. 300 Grams essentially equates to 300 ML, with a 300 ML can, all you can do is do a throttle body clean twice, to thrice at the max. As you know sprays are easily consumed with a few sprays, if the ML are lesser. And throttle body cleaning requires generous amount of spraying cleaning, re-spraying and cleaning. It also depends on the guy who cleans, if he's generous on the finger, they get gobbled up pretty fast. Unless we're taking about 500 ML or more, then we have chance of extending it to a few cycles, but not really to 10 times, unless one cleans a throttle body like he hurries up on his perfume on his commute to the office.

Cheers!
VJ

Re: KTM Duke 390 - Ownership Reviews and Experiences

Yeah agreed bro, proper cleanup will require 150ml minimum,
I used generously as the idling circuit orifices had carbon build up. Just spraying onto the TB will only clean the visible side of the butterfly valve. The main thing to be cleaned is the butterfly valve seats and the valve shaft areas where the carbon build up is likely to be high.
Before removal of the throttle body we have to ensure the outside also stays clean, as we dont want any small dust particles going into manifold. So before removal of TB spray some on the outside such that the dust and gunk won't enter the manifold when we remove.
Also ensure to clean the manifold rubber flange.
If proper cleanup is done one can definitely see stable idling and bike will respond to throttle inputs without any hiccups.
One thing we noticed is prior to cleanup bike used to stall at bumper to bumper traffic. (ie. When we release clutch lever at lower RPMs).
The circled areas in the image requires special attention. We have to remove IAT sensor, idling stepper motor and injector to clean those areas.
Just spraying some amount may help you keep the cleaner for a long time say 10~15 times. But a proper cleaned TB will outperform his cleanup method.

Re: KTM Duke 390 - Ownership Reviews and Experiences

cleaning tb at 10k is usually unnecessary. Once in 25k km is usually more than sufficient.
That bottle will last you at-least 5 times, and I know it because i use it. One just needs to use a bit of common sense and you could squeeze out more from it.
first clean the tb with some petrol/diesel and a toothbrush to remove the lighter surface deposits and then hit it with the carb cleaner to clean out the rest. you don't need to overuse the product.
and be very careful with this particular 3m product, it eats up certain plastic/rubber parts.. so don't let it get on such materials.
if you want to clean the injector, either use a injector specific cleaner, or take it to a car injector service guy like bosch or maybe regularly use an injector cleaning additive (like system G, abro etc.. ) along with fuel.

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either the speedo sensor was not attached properly (very unlikely a wrong size disc was installed) or it has failed. a new sensor iirc costs around Rs 450. I had a similar issue and the speedo sensor was the culprit.. was replaced for free under warranty.

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It shouldn't cost you more than 600rs iirc. Cleaning the tb is easier than an carb clean when i compared it to my honda dio

Re: KTM Duke 390 - Ownership Reviews and Experiences

I'll update what pricing will svc quote for TB cleaning.

Re: KTM Duke 390 - Ownership Reviews and Experiences


Left the bike for inspection at the service center folks. The issue seems to be with the bolt used for fixing the new rotor disk. One of the bolts used were damaged and bent.

When all bolts are fitted perfectly, the speedometer sensor gives out a pulse. But when one of them is damaged the sensor misreads and gives out three pulses. And that is why when i go past 60Kmph, the sensor misses out the damaged bolt and gives out a false reading.

Will be picking up the bike later today. Will share the cost incurred and the pics of changed bolt.
Thanks.