jonnyc21

It isn't really about fuel volume as much as lack of air volume. The less air the more affective everything gets started, the more air you have the longer it takes to generate the needed suction.

Have you checked that tank, vent and filler tube are not blocked or have an air leak? If they are fine then the next thing to look at would be the main tanks cap and seal, if it isn't sealing well your not getting the suction you need as the fuel drains from the tank to create the syphon you need. They are a really basic system so the only other option would be if you don't have the needed volume in the main tank to get the syphon started?... Good luck.

I would suspect it was using the wrong kind of oil based on only 20 hours of use. And yes if you know what type of oil was in the bike please let us all know so we can avoid it.

On the map switch, my wife's 08 125 seems to make a difference at the higher RPMs but the newer ones seem that be more pronounced at lower RPMs but I still felt it wasn't a big change unless middle of the RPMs at least. My 2 cents.

For reference my wife has an 08 Gas Gas TXT Pro 125 and I have an 07 Montesa 4RT (250), we got her bike first and spent my first 6 months on her bike and being the same 80kg you are that little 125 got me first place at every event I went to tell we got me my bike and I jumped a class to make it more challenging. Over all I like the 250 better for my size but the 125 was a great bike and I would still be happy riding it today if the wife hadn't ended up liking trials and we stayed with just the one bike. So to sum it up, ether will do fine. Its all about getting on one and rinding them both before making the call if you can. At your size a 250 that is setup well on jetting with good settings on the bars and lever ajustments would be a great bike. As sujested a slow throttle tube maybe a good idea but might not be needed as you have past experience. Good luck.

I suspect its as indicated by heffergm. Though not TRS... I have seen the same, two bikes with the same brake components not feeling the same. It was a matter of both adjusting them and a fresh bleed getting air out and then spot on for both. (GasGas 125 and same year 280)

Very interesting... not sure if I like or hate it yet. hmmm

Sure sounds like the regulator or injector to me as well with that update. Maybe try some injector cleaner (I like seafoam) in a tank or two and get it running for a good long ride or two and see if the injection issue clears up before replacing parts? Good luck!

I am wondering if you have been able to turn up the idel/tick over speed and see if that helps yet? Any other information you have been able to figure out? any changes or other data that might help based on some of the other comments?

It's being hosted at Hualapai Mountain Park about 25 min outside of town from what I have been able to figure out. FYI: Hualapai Mountain Park and the only near by lodge are completely reserved for the event staff and participants so you are stuck sleeping in our car if you want anything close than in town.

Have you tried turning the tick over up to see if it's just not getting the correct ECU result when starting?

Dose the front brake lever have some free play in it before it contacts the cylinder? If not the first thing to do is adjust a small amount of play in the lever. If that doesn't fix it pull the lever and check that it isn't frozen as indicated by Jimmy. On the rear brake, bleed the system and see if that helps. I had the best luck doing a reverse bleeding process but even a good job doing it the traditional fashion should at least get enough of a result to know if you have a bad master or just some air in the line.

Ah the wonder of wireless, if only I could get a Bluetooth connected PTB for my Montesa and future 300RR. I am sure it would be for the most part wasted on me but would still be way cool to have the bragging rights on that one. LOL

Sounds to me like it might be time to try a different bike...

My daughters 06 Beta Rev 80 has the same issue, the longer between rides and oil changes the more often it happens. Just a little riding with the clutch pulled in an it sorts its self every time. As you indicated when it starts happening a lot in short order I change the oil and its better.

No the production bikes are all single plug.

I am not sure about what other people see, but when you look at the angle of the hill in comparison to the trees its crazy steep. You also see a lot of people slipping down the hill most of the video... I would love to run a hill like that on my modern bike just for the fun of it...

I am afraid my number of clicks will not help as I am running 2.5 fork oil in both front and rear instead of 5.0. (Had the both serviced and changed). I could get the spring preload settings though? Might be a week before I can though as I have riding plans for this weekend...

PTB = programable throttle body.

Love the video, but I also see the same thing oni nou is seeing, Robregordo a classic trial from 2012, not SSDT...

Not sure if we will ever get Bou or Fugi to the SSDT but Amós Bilbao has gone more than once from what I understand.

I can't get a good mesurement on the diameter of the pistons without pulling them apart but I was able to get a good look and I don't see any washer. Looks like this image for parts from what I can see.

I would love to know what people think as well. I myself am not sure bout the other brands but the people I know with the new new 260 Montesa's seems to say they are just as reliable as the old ones and my 07 4RT is rock solid...

If I am reading the 05 manual correctly I think your looking at this one. "rear spring: force at 10 mm compressed196 - 232 N (19.9 - 23.6 kgf)" Didn't see a force for the front... I am pretty sure my 07 is the same but would be willing to double check tonight if you want me to. As for your 85-87kg (geared) I run the stock spring on my 07 and am also in that range with gear and don't have any issues with stock springs. I do find I like a little more preload in the front than in the rear (not much more though) and had the settings turned down for compression and rebound to make the suspension a little faster than the stock settings as my 07 felt a little slow and heavy before doing so. hope that helps.

Had something come up, will get this for you tomorrow.