Fantastic! So, the passage leak is so mild enough that it doesn't get noticed early and kudos to the Indiranagar team to find out that this was the culprit. These same issues have been plagued in other threads of RC 390. Do keep your ride observations closely jotted down here, so that we are assured that the issue is resolved once and for all. Wish you luck!

Cheers!
VJ

Does anyone have this issuw?

If the bike turns off unexpectedly, let's say you release the clutch fast and the engine goes off. The oil pressure light turns on.
And it stays on as long as you don't move the bike, or you don't give gas. Moving the bike a few meters turns off the light for sure.

I don't think that's an issue. It is normal behavior.

Does anyone have this issuw?

If the bike turns off unexpectedly, let's say you release the clutch fast and the engine goes off. The oil pressure light turns on.
And it stays on as long as you don't move the bike, or you don't give gas. Moving the bike a few meters turns off the light for sure.

There have been cases where, the TFT throws tantrums w.r.t to oil pressure and it's sort of always been a sort of a unicorn issue where even after updates, pressure sensor replacements, the issue crops up. I personally feel it all has to with software programming, perhaps with an update. In the meantime, keep a tab on the oil level, just in case.

Cheers!
VJ

It doesn't have to do with the screen. It is the light on the side, there is no warning in the screen.

It doesn't have to do with the screen. It is the light on the side, there is no warning in the screen.

There are definitely some tantrums with this bike. The oil pressure turns ON for me while riding in bumper to bumper traffic while the speed is less than 15kmph. Once the speed increases the oil pressure sign vanishes. Hence I have stopped worrying about these indications. What I do is keep a close monitor on Coolant and engine oil level and condition. Sometimes conventional ways are much better these advanced sensors which are at times faulty.

On slow speeds i think i have seen it too in my bike, to turn on the oil presure light and it turns off if you increase the speed.

Right. For some it throws up an error on the screen and for some the light stays on for some time and randomly goes on and off. If you feel something's amiss, try replacing your pressure sensor. If after the replacement you have the same error displayed, have your TFT console updated to the newest firmware, v39.

Cheers!
VJ

thanks, will get that fixed. Right now I got bigger problems though. Engine oil leak - engine is to be opened and all gaskets to be replaced :-(

Yes Definitely. So let me start from the beginning what all i went through in last 2 months of this issue. So soon after 1st service i was facing coolant vanishing issue. The coolant was reducing from max to min mark from the reservoir every 400 - 500 km. I used to check my engine oil from the small glass however could not infer that coolant was mixing with engine oil since the oil seemed like used engine oil (a slight golden color). I went to SVC and following was done in every visit.

1. First Visit - They changed my radiator. I could see a portion which was wet always hence i had my doubts on radiator. SVC took advantage of this situation and changed my radiator and made me pay for it without any diagnosis. They did not even check if coolant is mixing with engine oil.

I went for a ride for around 400 kms and again the coolant was again at min and decided to visit SVC again.

2. Second Visit - Mechanic told me that there was some issue with pressure cap due to dirt trapped. He has a device to check the pressure and inferred that the pressure was low and he has corrected that and now the issue should be fixed.

I went for a 400 km ride again and issue remains the same.

3. Before my third visit i made a complaint to KTM. Third Visit - This time I was taken up seriously. They checked the engine oil. Found traces of coolant. They replaced my water pump seals and gave back my bike.

As usual I took out my bike for a test ride and inferred that issue remains as it is.

4. Fourth Visit - I went to the SVC and gave my bike. They said they will have to check the head gasket and said that it will take some time. I left my bike in SVC. While they were working on my bike i thought let me do a uninformed visit to SVC. The next thing that I see my opened up engine. I was very angry since they told me that issue is only with head gasket and I see not just the head opened but engine below the head also opened up. On further inquiry they told me that they inspected head gasket and found it to be fine. The picture which I have posted has a marked area through which coolant flows through the side walls of engine. There is a liquid sealant which separates the coolant and engine block. And that sealant was not pasted properly by Robots in Factory was the explanation given to me by everyone including Karnataka ASM. I got my bike back after 4 days of work in SVC.

I went for a long ride after this. Around 700 km this time and looks stable now. What I got along with the fix was an additional tick tick sound which I am suspecting due to valve clearance issue. A shim adjustment / replacement will resolve this according to my knowledge hence not really worried now. Will take my bike to SVC to get my shim adjusted. But the actual coolant issue is fixed finallyyyyy.

Is there any definite method of ascertaining whether the coolant has mixed with oil since visual inspection indicates the colour of oil as normal. I have also noticed significant drop in the coolant level after having ridden the bike for about 500 kms post the first service. Just want to make sure whether there is actually a coolant leak in the engine or there is some other issue. Don't want to go for the last option before being absolutely sure..

Is there any definite method of ascertaining whether the coolant has mixed with oil since visual inspection indicates the colour of oil as normal. I have also noticed significant drop in the coolant level after having ridden the bike for about 500 kms post the first service. Just want to make sure whether there is actually a coolant leak in the engine or there is some other issue. Don't want to go for the last option before being absolutely sure..