For what its worth, I noticed my FI 1300 roadster run particuly rough on the E10 blended petrol(?) here in N.Z. cleared up again when I moved away from Gull gas. Affecting the injectors maybe? (fortunatly my Bergs got a carby and seems fine on E10). interesting point.
Vapor lock on 2010 390??
- Thread starter flyinbryan
- Start date
Come to think about it, I have run a bit of bean oil in all my 4 strrokes - mostly love the smell but a little lube can't hurt either. I have Brian's FE 390 here at the shop and have been digging into it and I will be for a couple more days.
Later,
Jeff Tasky
Later,
Jeff Tasky
Hey guys. So, just heard from my dealer as mine has been in the shop for just over a week. I was only having the non-start issues. Ride the bike for an hour or so in 1st and 2nd gear stuff...stop, then it won't start. Everything turns over and I hear everything trying to start. I hang out for 15 min or so then it starts right up and doesn't skip a beat.
The bike has never cut out on me once while I was riding. I have the tank lined, the check valve out, the gas cap ball out, an FMF Ti can and rad fan. I do not have the mid pipe wrapped yet.
I did not start having problem with the bike until it had around 15hrs on it and it seems to be getting worse. When it was new I did have the problem of the gas shooting out of the tank because of pressure build up and boiling fuel. The bike started fine when that happened tough. I am riding up at altitude but lately when it has been happening it has only been 50 degrees out.
The shop was actually able to replicate the problem after they got the bike really hot. They did all the checks with the pump and such as per KTM's guidelines. They are positive the pump is good to go. They were in touch with KTM the whole time and KTM had them replace all the fuel filters in the whole system.
Soooooo, long story longer, they checked the valves. One of them was out. This was the first check the bike had (about 22hrs total on the clock). Apparently KTM is saying these Bergs need to be checked, and most of the time adjusted at 3 hrs after new, which the dealer said was news to them.
After all the new filters, valve adjust, etc., they can't get the problem to come back. I am gonna pick it up and try it this weekend on the same trails that caused the problem before. They are pretty sure the problem MY bike was having was a valve adjustment issue. They said me letting the bike cool, and when it was cool at the start of the ride lets the valves work properly. I'm not enough of a mechanic to know if this is the case.
I'm sure most of you have checked your valves and maybe my issue is totally different, but I just wanted to relay my findings.
The bike has never cut out on me once while I was riding. I have the tank lined, the check valve out, the gas cap ball out, an FMF Ti can and rad fan. I do not have the mid pipe wrapped yet.
I did not start having problem with the bike until it had around 15hrs on it and it seems to be getting worse. When it was new I did have the problem of the gas shooting out of the tank because of pressure build up and boiling fuel. The bike started fine when that happened tough. I am riding up at altitude but lately when it has been happening it has only been 50 degrees out.
The shop was actually able to replicate the problem after they got the bike really hot. They did all the checks with the pump and such as per KTM's guidelines. They are positive the pump is good to go. They were in touch with KTM the whole time and KTM had them replace all the fuel filters in the whole system.
Soooooo, long story longer, they checked the valves. One of them was out. This was the first check the bike had (about 22hrs total on the clock). Apparently KTM is saying these Bergs need to be checked, and most of the time adjusted at 3 hrs after new, which the dealer said was news to them.
After all the new filters, valve adjust, etc., they can't get the problem to come back. I am gonna pick it up and try it this weekend on the same trails that caused the problem before. They are pretty sure the problem MY bike was having was a valve adjustment issue. They said me letting the bike cool, and when it was cool at the start of the ride lets the valves work properly. I'm not enough of a mechanic to know if this is the case.
I'm sure most of you have checked your valves and maybe my issue is totally different, but I just wanted to relay my findings.
No kidding! For that kind of starting issue ... it had to be out quite a bit.JohnnyQuest said:
I always check my new bike's valves at 3-5 hours ... and usually found at least one on the edge of spec.
Manufacturing tolerances aside -- all new things bed in and can possible change.
Glad you got things figured out and back on the trails! :cheers:
Well tight intake valves would definitely cause hard starting...To me it doesn't really match the behavior your bike had though, i.e. it would run great and then shut off and not start at all but I suppose it is possible.
On that note I guess I should check my valves as I am at 25 hours without checking. :?
On that note I guess I should check my valves as I am at 25 hours without checking. :?
Bad dog! Bad dog! No biscuit for you! (grin)crit rat said:
Do let us know your valve clearances after you ckeck them -- so we can add that info to our knowledge pile.
E-Ticket
Have them read the owner's manual - page 29, service schedule.neverride said:
Better yet - get a different dealer. :roll:
Interesting that the valves would be out of spec - generally they aren't. Every time mine have been checked (about 55 hours on the bike) they are in spec and not needing adjusting. Dealer says he hasn't had to adjust any yet and there are bikes he has seen with a lot more hours.
The guys at Elite KTM in Loveland are really good and are a newer Husaberg dealer so they are getting everything dialed in. Because of my bike, now they know what the deal is. They are constantly learning.
Suggesting someone "get a different dealer" because the dealer is learning is not a super helpful thing to say in my opinion.
I did my first race on the bike when it had 7 hours on it and have put over 20 hrs on it since it was new on September 1st of this year, so maybe I am on harder on the bike than some. The guys at the dealer have said that the newer KTM's have just needed the initial valve adjust and then they have not really moved, so we will see.
Suggesting someone "get a different dealer" because the dealer is learning is not a super helpful thing to say in my opinion.
I did my first race on the bike when it had 7 hours on it and have put over 20 hrs on it since it was new on September 1st of this year, so maybe I am on harder on the bike than some. The guys at the dealer have said that the newer KTM's have just needed the initial valve adjust and then they have not really moved, so we will see.
The symptoms don't point to tight valves. One common symptom is the bike starting right up after a quick rest, and then dying about 20-30 seconds later. I have been high in the revs in that 20 second period and still have the bike die. Tight valves make the bike tougher to start, but if they were so far out of spec that the motor dies while riding, then you would have never gotten the bike started in the first place.
Yeah, the bike has never died once while riding. I ride, stop, kill the engine, wait for a minute or two for people to catch up etc., and then it won't start. Hang out for 15 min or so and then right it is right as rain until I stop again.
I will get on it this weekend and see how it shakes out. Thanks for the replies!
I will get on it this weekend and see how it shakes out. Thanks for the replies!
Juicifer said:
I agree with this, at least in my case. Every time mine has done it, it starts up fine, then dies like it has run out of gas. That doesn't seem indicative of a valve spec problem.
I went for a ride yesterday, temp in the low 90s, fairly technical single track, mostly 1st and 2nd gear stuff. I shut the bike off 3 times and didn't have the problem. The last thing I did the last time this happened was turn my idle up two clicks and it started right up. With the idle slightly higher than normal, I didn't have this problem yesterday. I am still not thinking my issue is solved, more ride will determine that, but it is interesting that I didn't have the issue yesterday.
Joined Jun 2007
4K Posts | 1K+
south east WA Australia
another solution is a 48mm or bigger lectron carb for the 570s and an aftermarket ingnition
id reckon the fcr 41 be nice for the 390 and a 43mm bore for the 450
but youre still gonna need a fuel pump and or a new intake tract :twisted:
id reckon the fcr 41 be nice for the 390 and a 43mm bore for the 450
but youre still gonna need a fuel pump and or a new intake tract :twisted:
Got the bike back last night. The salesman told me that they replaced the fuel pump but the work order from the shop says that they found a loose wire and reinstalled the pump. I hopefully will ride it tonight and see if it happens.
Ask the shop manager to set aside the new fuel pump *with your name on it* until you get at least a couple of rides. <g> And find out what wire ... and where!MrSmooth said:
Best of luck, eh! E-Ticket
Rode the bike tonight pretty hard for an hour and it never missed a lick. I stopped and restarted mulitple times just to be sure. It may be too soon to say for sure that its fixed but tonight was the longest time it's gone without the hot start issue since my first ride on it. :cheers:
I emailed the dealer and they did indeed replace the fuel pump. He also said that the positive lead to the fuel pump was loose but didn't say where.
I emailed the dealer and they did indeed replace the fuel pump. He also said that the positive lead to the fuel pump was loose but didn't say where.
Another "spirited" one hour long ride tonight. It's amazing how fun this bike is when you don't have to worry about killing the engine. 6 hrs total now. It's officially fixed I believe.
I really think the loose wire might be a possibility. My fe450 stranded me again today during a race. This time it didn't want to start back even after cooling down though. One time before it flamed out totally I landed off a kicker and it sputtered hard. I saved it that time with a handful of throttle but it did it again landing a jump going into a corner. It wouldn't start even after an hour of waiting. I finally pushed it back to the pits and after tugging around under the tank the fuel pump kicked on.
Did Anyone's problem go away after just removing and reinstalling the old pump?
I went straight from the race and dropped my bike off at the dealer. Hopefully they can figure it out!
On a side note I also had a problem on the line. The start switch was dead. Pulled off the seat and it cranked, seat back on and dead again. Apparently the seat was pressing on the starter relay or one of the fuses on it. Anyone seen that before?? Wondering if they are related or just two separate problems.
I'll post a vid of the flame out tomorrow after I edit out all the cussing and name calling
Did Anyone's problem go away after just removing and reinstalling the old pump?
I went straight from the race and dropped my bike off at the dealer. Hopefully they can figure it out!
On a side note I also had a problem on the line. The start switch was dead. Pulled off the seat and it cranked, seat back on and dead again. Apparently the seat was pressing on the starter relay or one of the fuses on it. Anyone seen that before?? Wondering if they are related or just two separate problems.
I'll post a vid of the flame out tomorrow after I edit out all the cussing and name calling
My bike never once died or even hesitated while running until I took my fuel pump out to inspect the filter and then reinstalled. After that, it started dying while riding and then progressively and quickly got worse to the point of not starting. That does sound like a loose connection. The hot starting (my original problem), doesn't sound like a loose connection to me but anything is possible I suppose.
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