KTM Owners Forum banner

Is there a preemptive strike on 790 camshaft issue?

1 reading
6.5K views 52 replies 14 participants last post by  TrouserSnake  
#1 ·
I have a 2020 790 duke and the way things are going with KTM, I’m concerned about the camshaft’s going and having no backup from KTM, being stuck with a useless bike.
Is there a camshaft upgrade that can be fitted to prevent the issue? Or anything else that can be done.
 
#5 · (Edited)
There is some speculation that riding at lower revs and/or allowing excessive idling might make the problem worse if your engine is one that has lower oil flow.

I think if I had one the first thing I'd do is take the cam cover off and inspect the cams. Then I would turn the engine over on the starter motor and check to see if I have a good flow of oil from all 4 cam jets.

If I had no visible wear and good oil flow I would just relax and enjoy the bike.
Also if taking the cam cover off wasn't a big job then I'd do that at each oil change.
 
#6 ·
Great advice guys, I’ll take it all onboard. I might just be a victim of too much YouTube videos, there’s all these videos about the cheese camshafts, it plants the seed but I think the actual figures are 55,000 790 dukes sold in the uk and 29 reported camshaft failures. I might be totally way off with that, it’s just something I read. I will change the oil and filters over the winter and have the bike inspected in the spring. My bikes running fine, it’s just human nature to worry.
 
#17 ·
Definitely the case imo... There were no issues for years with only a handful of affected bikes, then over the course of 2-3 months all of a sudden everyone and their mother's LC8c's are affected.....

KTM is in self administration but it's unlikely there'll be any serious repercussions to dealer support in the short term.
 
#8 ·
I added 100ml to my smt and my superduke, superduke felt like it had another 10 bhp, I change oil every 3000 but it's supposed to molecule bond to all the surfaces but no harm in trying it, have a look on there website, I saw it at the bikeshow yrs ago with a spinning bearing and a rod you pull down on and it picked up with the std oil and with this stuff on, it wouldn't pickup or mark the spinning bearing even if you hung off the bar to try and make it mark it and there was no damage at all
 
#23 ·
I think it’s just a case of if you’re one of the unlucky ones, I guess. I’m my o worst enemy when it comes to things like this, I had a BMW S1000rr and there’s all sorts apparently wrong with them. I started reading the horror stories and watching the YouTube videos and that was enough to convince me to sell it. The bike was perfectly fine but I bought into the negative hype. Same with my 790. It’s perfectly fine, great little machine that’s loads of fun but them cheese camshaft videos can get into your head.
 
#26 ·
Yea my plan exactly... I got 3rd party warranty on my 1290 just in case, never had an issue with it but didn't have it long enough to find out, only had 19k miles on the clock... my 790 adv R has now 14k miles on the clock but had it's annual and 9k mile service done in july and it's FSH prior to that, so doesn't need dealer touching until 18k, next july, when that comes i'll have a quick peak under the valve covers, if it's bad, I'll take it straight in and get a new head for free, if it's all good, then do valve service myself and life the rest of the bike's life with 100% peace of mind
 
#28 ·
You’re right, it’s some element of luck. I had a BMW S1000rr, my dream bike, bought it and joined the owners forum, like you do. Straight away bombarded with the usual, wait till this goes wrong, that goes wrong, they are known for this fault, that fault etc etc. Really takes the shine of owning one. I have no doubt that there’s an issue with the KTM, there seems to be an issue with every bike and car these days but not every 790/890 are in pieces in some dealership or owners garage. I will do whatever I can to maintain my little scalpel, hope it is ok and enjoy the ride.
 
#37 ·
Here's a thought: are the heads made in China?
Who would benefit from a devalued KTM that could be purchased at a Knock Down Price off the Receivers?
I'll leave you with a little thought.
A few years back, a British Company called London Taxis International was persuaded to 'off-shore' component production to China. Among the components off-shored was the steering system. The steering systems failed, and the vehicles were recalled, but suddenly the Chinese supplier was unable to help.
LTI went bust and was subsequently taken over by a Chinese company. Miraculously, a revised steering system was soon produced!

I'm not making this up: this is what it says in Wiki

In October 2012, following a suspension of sales due to the discovery of a serious flaw with vehicle steering components and having failed in an attempt to obtain new financing, the company was placed in voluntary administration.[8][9] The quite recently specified faulty steering components had been sourced from Geely supplier, Gang Yang in China.[10][11]
In February 2013, certain assets of The London Taxi Company were purchased from administrator PricewaterhouseCoopers by Geely.[12][13] It continued to trade as The London Taxi Company until rebranded as the London EV Company in September 2017 developing electric commercial vehicles at a new plant near Coventry, the first into production being an electric taxicab - the LEVC TX.
 
#42 ·
The quality of work on the video I posted was terrible.
If the 'KTM technician' can't even do up engine bolts, and hose clamps, or turn taps on, what chance is there that he could install a new head and cams without wrecking something?
If I were dong that job, I'd mix up some assembly lube using 50/50 STP and engine oil and paint it on the cams and followers.
 
#44 ·
I see three possibilities that could have caused of the assembly issues in that video.

1. Genuine mistake, maybe the technician was being overloaded so quality dropped.
2. A sign of the times, the technician so demotivated they just don't care anymore.
3. The shop uses lower skilled 'operatives' to strip the engines out and replace them.

Either-way it reinforces my believe that you are better off learning how to work on your own bike or car.
 
#46 ·
The guy said the repair took months and months, and so in fairness we all know the hardest thing is assembling that project bike that has escaped from memory. Add then dealer time pressures etc. No excuse, but having a customer bike sitting disassembled for three months would not help the issue. But the engine mount bolts.... Sheesh.

I guess I was starting to believe the KTM hype that the cam issue was resolved with the new head and followers etc.. Final nail in the coffin if not :(