Just picked up what I beleive to be an '04 txt pro 280 (see below), had a quick search online and can't find any other '04s with white Marzocchi forks?
If it was crank seals would that not make it run lean all the time? It seems fine while revving it (blue smoke and all), it just goes lean off throttle.
Looking at these pictures it looks like my brass tangs are fitted updside down?! Have fitted it the correct way now and the bike definitely seems better. See the video at the bottom for how it is running currently. So my question is, is that a normal amount of over revving/pinging/revs hanging? If not which way should I move the tangs, as i've tried a little higher and also a little lower but still seem to have the hanging revs?
Its still doing it after fitting the new inlet manifold, idle is set very low and air screw is 1.5 turns out. Before I get into crank seals could the float level be too low? If so how do I adjust this?
As above, have done it once before a few years ago so need a refresher, method, oil amounts etc, both fork legs have oil? Bike is '07 btw.
Before I do change the seals I'm going to try to remove any dirt with a sealmate or feeler gauge so if that works whats the method for topping up the fork oil?
My mistake, now the pilot is clean I can see its a 30. Reeds look OK too. Have replaced the rubber boot between the carb and engine with a new one and so far in the garden that seems to have made loads of difference, I think its almost back to normal. Will try raising the floats a little too if that might help?
Also any pics of modding the vent tubes to stop the dam fuel leaking?
Thats the thing, ive only just bought it, it seemed ok on a quick test ride hadn't been on a trials bike for a few years so I didn't pick up on the over revving until I got it home and took it for a proper ride.
I cant see any debris in the carb at all now so will check the inlet manifold for cracks and then move on to crank seals.
Other than that, is there anything else I can check whilst its off? Please be descriptive as am not all that clued up here :-(
If thats it for the carb i'll start looking at crank seals? The engine does sound like its needs the main bearings doing, that wouldnt cause hanging revs would it?
Yes it does return to idle eventually and does alot of ring ding dinging first. Am pretty cluelesss when it comes to setting the carb up are there and guides kicking around that'll help me out?
Just got an '07 Rev3 250cc and have noticed the revs are taking way to long to drop when I let the throttle off making it really noisy and pretty unpleasant to ride :-( The bike sounds very much like a 2-stroke motocross bike being ramped around?! (not good)
I have another thread with some general questions about the bike but i think this problem needs looking at in depth. Someone mentioned either crank seals (allowing air in) or idle set too high, i've turned the idle right down and still have the issue so is it likely to be crank seals? If so, whats the score on changing those, any guides around?
While we're at it, I don't have a handbook and can't find one to download anywhere for the 2007 so in this pic below the red arrow is the idle yes? So what is the green one and what should it be set to? Also is there any other screws on the carb that i need to be setting?
Haven't had a trials bike in a couple of years (last being an '03 Rev3 270 back in 2009). Been tearing about on a WR450 Supermoto so a little bit out of touch with how the trials bike should feel. Just got an '07 Rev3 250 today and have a couple of questions to refresh my memory...
1. Pretty sure I was runnng 70:1 pre mix ratio with fully synthetic, thats about 71ml per 5 litres yeah?
2. Should the 250 pull the front wheel up in 2nd gear (stock gearing) without the clutch? Seem to remember my old 270cc just lifting the front wheel with a twist of the throttle but the new 250 wont do that at all, that right?
3. Getting a knocking when compressing the forks with the front brake on, I know it has a floating disc but should it knock quite so bad? Dont think its the forks themselves.
4. Front brake is squeaking/vibrating, any fix for this?
5. Revs take a while to go back down after revving, flywheel weight is fitted, what would be causing the hanging revs.
6. Clutch is slipping, can this be tightened up or is it time for new friction plates?
7. How many turns out should the mixture screw be?
If it has the alloy casing its less likely to corrode but still possible. You may just have a load of old crusty coolant in there, have you scaped away the coolant to see if theres any actual corrosion?
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White Marzocchi Forks On '04?
in Gas Gas
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Just picked up what I beleive to be an '04 txt pro 280 (see below), had a quick search online and can't find any other '04s with white Marzocchi forks?