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  1. B7ACKTHORN

    Dreaded fan failure....

    Spal, Engine or No Ice, it doesn't matter as long as the system is flushed and bled properly, using a good quality radiator cap (stock is built to a cost) this should keep you in peace and temps in check for a long time to come.
  2. B7ACKTHORN

    Crankcase breather questions

    Capping it off is a bad idea as it will cause excess pressure build up inside the engine. Either it's vented or vented positively or as 1JZS said, using a catch can works best if all three is a menace. With the treehugging policy taking hold, race bikes are waived off from this, but if you're a...
  3. B7ACKTHORN

    Ignition coil upgrades

    Upgrade to oxygen free, tin plated, double stranded copper ignition coil wire along with an Iridum plug and the spark quality is something to be felt. MSDs, coil overs are not a bad idea (if there is a dedicated CoP setup) if not upgrading the wire, plug cap and plug to a better quality one will...
  4. B7ACKTHORN

    'Mayonnaise' in breather tubes. Gasket problem?

    How many miles has the bike clocked, is it a new or u(abu)sed bike? Any sort of latte discoloration of the engine oil means mostly the Achille's Heel of almost all KTMs are the water pump seal. Failing or partly failing pump will cause oil discoloration with excess froth and a latte-ish color...
  5. B7ACKTHORN

    Clutch Life

    Clutch setting is a pretty knackered up topic these days. Considering your bike is new and not used and the related variables, 5k miles is too soon. Start off by making sure your clutch freeplay both at the lever and engine side is perfectly notched up. Little to too much freeplay can and will...
  6. B7ACKTHORN

    Clutch issues in 2017 RC 390

    How well is your clutch freeplay adjusted? Too little freeplay can and will cause grinding, hard and knocking gearshifts. Get your freeplay adjusted and see if it helps. If it still pings, we might have to check the release bearing and the clutch assy.
  7. B7ACKTHORN

    Installed new exhuast and air filter. How do I reset the bike to adapt to the new mods??

    You can try your hands on PowerTronics FUELX a cheap and alternate way to adjust fueling automatically. This automatically adjusts the O2 reading and fueling depending upon the exhaust setup. Give it a chance! Google PowerTronics Fuel X
  8. B7ACKTHORN

    Cheap Slip On Mufflers

    Cheap slip-ons if done well, really can't be told the difference between an original or a first copy. With machining too good these days, first copies from Thailand, Malayisa and Indonesia made slip ons are pretty famous. Also there are dedicated small scale manufactures who manufacture...
  9. B7ACKTHORN

    Cam-chain lifespan.

    Cam chain, just like motorcycle final drive chain depends on a lot of factors. There isn't one statistical model to go by, as a set standard. For some a drive chain might last upto 30k kms for some, 20k kms and for some 8k kms. Why? There are lot of factors. Chain stretch cannot be measured...
  10. B7ACKTHORN

    Canister removal question

    Curious cat has summed it up perfectly. Quoting his answer. You have 2 lines coming from the tank. One is the tank vent and one is the tank overflow. For the tank vent you can just vent to atmosphere, and the tank overflow I combined with the coolant overflow for a single line to the ground...
  11. B7ACKTHORN

    Replacing Balancer shaft (waterpump)"spacer" or "sleeve"

    Try heating the sleeve and midly tapping it with a ball-peen hammer. Careful not to bend the balancer shaft. It's stuck primarily due to rust as far as I can observe. Dab it with WD40 let it soak overnight, use a plier or adjustable saw plier and try wiggling it out, it should come out. If not...
  12. B7ACKTHORN

    Drops of oil coming from breather hose

    So, does this valve cover breather suck in air to compensate for the blow-by from the rings and helps the engine breather or this valve cover breather vents the valve train pressure to the airbox, I am confused now.
  13. B7ACKTHORN

    Need Help Shift shaft removal

    With the Duke 390, first off you need to drain the oil, though you need not remove the clutch assembly in its entirety, you are required to remove the clutch cover, undo the gear linkages on the left side and then remove the springs attached on the right side shift shaft. If you're not sure what...
  14. B7ACKTHORN

    Need Help RC 390 hesitation during quick acceleration, rough engine, backfiring, uneven idling

    Did you replace you inline fuel filter? If the fuel filter and everything else you've mentioned has been replaced, start off by inspecting the ECM . A faulty ECM itself will manifest these symptoms with no error whatsoever on the dashboard. But before that I would strongly recommend you to carry...
  15. B7ACKTHORN

    Need Help Bike shuts off at idle, and feels like it has two powerbands

    Do keep a tab on that Y connector, they clog up fast and in worse conditions the overflow fuel or water from the fuel tank can bypass their way to the coolant reservoir over flow tube and end up in the coolant reservoir sucked by the radiator which would mean pump seal failure and blown head...
  16. B7ACKTHORN

    Engine stalling / loss of power whilst riding

    Two things of paramount, check your fuel pump for proper fuel pressure 41 to 42 psi. Secondly, make sure your ignition coil connectors are not corroded and make sure the ground points are neat and clean. Thirdly, check for cracks in air box on the right side underneath the pilot seat, engine...
  17. B7ACKTHORN

    Rear Driven Speedo?

    Correct me if I'm wrong, the VSS picks up the pulses and sends to the ABS first as opposed to the ECM?
  18. B7ACKTHORN

    Dreaded fan failure....

    I would echo F390's points. All the points he'd mentioned are true to the dot. Bajaj had its hands full dealing with the complexity of the engineering and making sure its vendors are upto scratch. In fact it was a learning curve for the entire Indian automotive suppliers, as this was the...
  19. B7ACKTHORN

    Oil disapearing

    Let me tell you, there's more to this oil consumption issue. There's lot of metallurgy change involved with new the piston, the oil ring themselves compared to the 2013-2016. This issue only aggravated post 2017-end models the following ADV and 390 models. Now, which semi-synthetic is good? Any...
  20. B7ACKTHORN

    Oil disapearing

    In fact, switching to another brand of oil than Motul comparatively reduces the oil consumption. I've always been fervently advocating that the Motul 300V especially is an oil destined to vapor out to thin air with negligible performance. Matter of fact KTMs perform better with good quality semi...
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