[VijayAnand1]

Originally Posted by vishal.jayakuma

More new issues in my Duke 390 since my last post.
Initially I thought that perhaps they had filled too much fuel, but it wasn't the case. Petrol was leaking from the side of my bike; will attach photos below
You can also see the body sticker tearing apart at the bend.

I hope your issue is resolved. Adding to what Bhpians have added to. Apart from a pinhole leak in the fuel tank, it might also be a leaking pressure line (s) or a faulty fuel pump gasket -- a leak is a leak and the variances are aplenty, and it's better to get it thoroughly checked. Fire risk is real.

Secondly, the paint bubbling up is a disaster. It seems as though fuel has been the culprit in this case too, or might be the culprit, as E20 fuel is extremely corrosive on paint if left unattended and would cause the exact same phenomena. I'd recommend you to either replace the shroud in question.

Good luck.

Cheers!
VJ

[b16h22]

Originally Posted by VijayAnand1

Secondly, the paint bubbling up is a disaster. It seems as though fuel has been the culprit in this case too, or might be the culprit, as E20 fuel is extremely corrosive on paint if left unattended and would cause the exact same phenomena. I'd recommend you to either replace the shroud in question.

Good luck.

Cheers!
VJ

I don't know if it's a similar case but there have been many cases of pinhole leaks in the fuel lines by a certain insect due to the presence of Ethanol in fuel. Considering that Vishal's bike is not used regularly, you can't completely ignore such a possibility. I know a friend who had a hole in his car's fuel line like that.

https://www.team-bhp.com/forum/techn...ines-cars.html (Attracted by the ethanol content in petrol, beetles attack fuel lines of cars)

[amyntor]

Originally Posted by FlankerFury

Bikewale has some images in real world lighting conditions.


Maybe this will change your mind.
Attachment 2734889

Attachment 2734890
Bikewale | 2025 KTM Duke 390 | New Gunmetal Grey color and Cruise Control

Not really. I'm fully onboard the electric orange bandwagon at this point. I'll like it more only if they make it more orange.

[brownkaiser]

Originally Posted by amyntor

Not really. I'm fully onboard the electric orange bandwagon at this point. I'll like it more only if they make it more orange.

The black and grey combination looks great along with that orange colour frame. However, the font and style of how 390 is written, looks bad imo. They could have maybe wrote it in bold with the same orange color.

Probably someone will swap that part with the existing black and orange color bike.

[dukeofmurphy]

Originally Posted by vishal.jayakuma

More new issues in my Duke 390 since my last post.

Recently, I had done a tank full with regular fuel. I hardly use regular petrol, but this specific Indian Oil did not have XP95, so I filled up with the regular petrol.

Honestly, I've put some time in to reading up on fuel and I can assure you that the only advantage of a high octane fuel is that it burns a little cleaner than regular fuel. Other than that, you're just paying more for the same.

Why it doesn't affect performance? Because the energy dispersed by the 91RON fuel and the 95 fuel is very much comparable. The 390 has a compression ratio of 12.88 : 1. Now while that is high, it does not have the electronics to make use of the 95RON fuel - namely, the knock sensor.

A knock sensor will tell the ECU to adjust the ignition timing to make combustion optimal. Higher octane fuel can detonate quicker (less knocking). Once the knock sensor detects that there is no knocking, it can help the ECU advance the combustion timing by that much further, thus increasing the performance.

I'd say, it's safer to stick to 91RON fuel which is well recommended by the manufacturer as well.

But, apart from all this, I don't think this is a fuel octane rating issue. It could be a fuel tank issue. Anyway, hope this is of some help.

[vishal.jayakuma]

UPDATE:

Just dropped off my D390 this morning at the West Mambalam service centre in Chennai because I know the service head (Srini). We discussed the issues and he told me he will give me an update by Monday. Just received a call now, and I am sharing what we discussed, below:

1. The tank leakage was due to metal welds inside the tank area that had gone bad and was causing the fuel to leak. This will be replaced by KTM under warranty. The entire process should take approximately 10 days.

2. The battery issues were apparently due to a loose cable for the starter motor, but they also said that the battery might have to be replaced. They said it was over a year, so I might have to bear the cost. I stood my ground, vehemently opposed and made it clear to them that this should have been fixed during the third service, given in the last week of January, 2 weeks before the 1 year mark. So they said they will see what can be done.

3. I had asked them to check for coneset issues/clamp tightening. They said they will look into it.

4. Front brake pads are toast, have about 100-200 kms life on them. I will replace them by the end of the month, or whenever they get the update on the bike delivery post service. I don't think EBC brake pads are in stock right now, especially for the gen-3.

All in all, it seems to be fairly straightforward. I just hope no further issues will continue to plague me. Whilst already being on the fence about a bike upgrade, the next few months will determine this decision.

[iron.head]

Hi Folks,

I hope that the 390 Duke remains to be a fun ride every time!

I seek some information please.

Does somebody know the price of the latest gen adjustable front forks and the rear shock? I need to buy them for a project!

Cheers!

[VijayAnand1]

Originally Posted by iron.head

Hi Folks,

I hope that the 390 Duke remains to be a fun ride every time!

I seek some information please.

Does somebody know the price of the latest gen adjustable front forks and the rear shock? I need to buy them for a project!

Cheers!

20k both + 8.3k approx. You're looking at around 27k to 30k ballpark. Try getting the same adjustable suspension from used market, it'll cost you half the price, provided you're getting a good one.

Cheers!
VJ

[Piston_head]

I visited the KTM showroom to check out the new KTM Duke 390 in black. The color looks much better in person and is a great option for those who prefer a more subtle look over louder shades.

The black variant came with Metzeler tires, whereas the other colors with cruise control had Apollos. The SA wasn’t sure why there was this difference.

[dukeofmurphy]

Hello everyone,

Recently, I had an incident with my D390 Gen 3. It was a usually office commute back home and I noticed the check engine light was on. This one:

I searched the owner's manual and it said that the next steps were to take it to the SVC. In the troubleshooting section, it said the light probably indicates a critical fault like fuel injector malfunction. However, I was not able to notice any hiccups in the ride itself.

Anyway, took it to the SVC yesterday and the guy seemed rather chill about it. He ran the diagnosis and told me it says all sensors and engine parameters are nominal. He also said that unless there is a physical indication that the bike is struggling, I can ignore the light. It goes off on its own.

And it did. Right after 5min of me going to the SVC.

It still comes on when I set it in ignition and stays for 3-5 seconds once the engine is ON before disappearing again.


Can anyone with more experience tell me if this is a problem?

[Shonith]

Originally Posted by dukeofmurphy

Hello everyone,


I searched the owner's manual and it said that the next steps were to take it to the SVC. In the troubleshooting section, it said the light probably indicates a critical fault like fuel injector malfunction. However, I was not able to notice any hiccups in the ride itself.

He also said that unless there is a physical indication that the bike is struggling, I can ignore the light. It goes off on its own.

And it did. Right after 5min of me going to the SVC.

It still comes on when I set it in ignition and stays for 3-5 seconds once the engine is ON before disappearing again.


Can anyone with more experience tell me if this is a problem?

This isn’t a normal indication. There is some malfunction detected by the sensor or the sensor itself isn’t working properly, most probably the lambda sensor (O2) has gone kaput. You should have asked him what was causing the malfunction indication?

These service centre guys act casual over everything. Your bike is under warranty. If its the lambda sensor get it replaced under warranty, stand your ground on this. It probably costs around 2500rs, will be replaced free of cost.

[vishal.jayakuma]

Originally Posted by VijayAnand1

I hope your issue is resolved. Adding to what Bhpians have added to. Apart from a pinhole leak in the fuel tank, it might also be a leaking pressure line (s) or a faulty fuel pump gasket -- a leak is a leak and the variances are aplenty, and it's better to get it thoroughly checked. Fire risk is real.

Secondly, the paint bubbling up is a disaster. It seems as though fuel has been the culprit in this case too, or might be the culprit, as E20 fuel is extremely corrosive on paint if left unattended and would cause the exact same phenomena. I'd recommend you to either replace the shroud in question.

Good luck.

Cheers!
VJ

Finally got the update from KTM about the issues. Listing it below.

1. The tank has been found to have some weld leaks and was replaced under warranty.

2. The left side tank shroud where the leak originated was supposedly NOT valid under warranty because apparently "the customer should have known due to the petrol smell and immediately taken to the service centre, then we could have replaced it under warranty". Ironically this was the exact thing I did, but the service centre which completed my third service was permanently shut? How is this the fault of the customer? I have asked them to push back again and talk to KTM India for the same. If they still ask me to pay, I will 100% move on from KTM as a brand. It's not about the money, it's about the principle.

3. The battery issue was diagnosed and found to be a faulty/loose wire. It has been fixed and the battery is healthy. Long way off from the misdiagnosed dead battery by KTM Kolathur.

4. I have requested new front brake pads which are apparently Brembo. I highly doubt it, but I am attaching photos of the old vs new ones, which I requested the service technician to share.

[VijayAnand1]

Originally Posted by vishal.jayakuma

Finally got the update from KTM about the issues. Listing it below.
4. I have requested new front brake pads which are apparently Brembo. I highly doubt it, but I am attaching photos of the old vs new ones, which I requested the service technician to share.

The pad you've received is the genuine one. These are the standard ones sold as over the counter spare for the Duke 390 series. Rest assured, allow some time for the pads to bed in. Once bedded in, the brakes will be extremely efficient. From the looks of it, I feel as though your old brake pads aren't sintered, they're organic from the looks of it. Hopefully they're replaced with these new set.

Cheers!
VJ

[vishal.jayakuma]

Finally got my bike back after getting all the issues fixed. Total damage was INR 3098, which includes the cost of the sintered brake pads in the front. I think that is an extremely fair cost, considering that the tank and the left tank shroud were replaced under warranty. Huge thanks to Srini from West Mambalam KTM service for his immense help.

Regardless, I still think I will be moving on from this bike in a couple of months. Let's see what's next. CFMoto 450 MT or RE Bear 650.

[kedar3223]

I am looking for luggage options for my commute to work. I use a regular backpack and I have started to notice backaches and numbness due to prolonged use. It also leaves a sweat patch on my back.

I need something that can accomodate office and commuting knick knacks like wallet, power bank, charger, 3 small tiffin boxes, earphones, waterbottle etc. I would also like it to fit a macbook air and it's charger on the odd days that I carry it between home and work.

I usually use a dirtsack max 30 tail bag for my short tours and have limited to no experience with luggage systems.

With this is mind, should I be looking at tank bags or smaller tail bags? Given the tank shape and compact handlebar to seat space between the Duke, is a tank bag comfortable for the kind of size that would be necessary? What kind of capacity in litres would be ideal for my use case? Will something like a smaller 10-20 ltr dirtsack max or viaterra pod 22/10 do the trick. The dirtsack isn't the quickest when it comes to mounting/unmounting, which is why I was leaning towards the viaterra(but no back straps option here). Any other options that might have a more convenient system where it can double up as a backpack? Being waterproof might be a plus.