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I cannot understand how the carb work can be a factor ? surely if it was apart from the plug colour the bike would show other bad running symptoms ??? which it does not ! It’s starting first or second kick , idling is nice ,deceleration is good and under acceleration it seems to have good power it has never stalled or cut out and doesn’t overly smoke either . I’ve always been anal about maintenance so air filter is always cleaned and re oiled and after a few cycles I buy a new one .
My fuel is always fresh on the day and I use a good oil and I pour into the can measured properly and give a good shake ! My fuel tank and carb is drained after every ride again advice given by a reputable trials shop .
As far as the plug I should be using I was told by beta uk to run a bpr5es and use a 70/1 fuel to oil ratio, I will admit tho I’m concerned about changing this to 80/1 and would worry about the engine not being lubrcated enough .
The situation is insane because as far as I’m concerned I’ve done everything right , I did a trial 2 weeks ago and the bike never missed a beat and got a good run between sections, I never changed anything between that trial and the one on Sunday just gone and yet my bike lets me down in the middle of the trial by fouling a plug and it also got a good run between sections . I was hoping I got a duff plug but as said it ran fine on the same plug for 6 or so hours beforehand .
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Thanks for advice , carb was cleaned a couple of months ago and had been running fine previously, only thing I can think of is that I drain the carb after every ride you have to move it a bit to get to the drain bolt, I suppose I could of maybe not put it back straight would that make a massive difference??? I was in the middle of a trial when it started acting up so had been running fine for over an hour beforehand, I then checked things over and found the fouled plug dry black soot not oily or wet ! I installed a new plug and it seemed to run ok but my worry is will that happen again ???
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Yes I’ve done it twice was a bit oily
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The plug I was running when it fouled was a bpr5es !
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Yes I have reinstalled the apico air filter but yet to try . Thanks
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Bike has just started to foul plugs and then run terrible put in a new plug and starts first kick and it runs fine for maybe 10 hours or so then fouls again ! Carb has been cleaned recently and set up , and I’m using good oil and fuel and the right mix at 70:1 . Only thing I have done recently is change from an apico air filter to a jitsie pre oiled one which looks a bit bigger could it be that ??? Looking for advice on what to check next ! Thanks
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Thanks Scifi I’ve just gone from a 7 to a 5 so hopefully that may make a difference .
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Thanks Peter for that information maybe that’s the case regarding the shop and it’s just running slightly rich ! i was thinking because the bike runs fine I was reluctant to start messing with the mixture , and if you say from your past experience with evo’s yours were like it then hopefully I am just worrying over nothing .
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Thanks nebulous much appreciated for your advice ?
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Starts first kick every time , and gives good power and idles really nicely
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This is why I’m baffled as the bike runs absolutely fine and has done since I’ve owned it ! I also fitted a brand new pre oiled filter yesterday !
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Yes it’s been drained a few times since
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I always drain the tank down as it lives in the house and the mix is 70/1 using v power and putoline oil
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Ive recently serviced my bike and noticed the spark plug was quite wet and oily , I’ve put a new plug in and rode it this morning for 3 hours the bike runs , pulls and starts with no issues i inspected the plug and again it was oily , the carb was recently cleaned and set up by a reputable shop ! I’m not sure what to do as like I say the bike seems to be running with no issues although it does smoke when you give it a handful , it’s a 2015 2t and been well looked after could it maybe running rich ??? Any advice as to what’s going on would be much appreciated.
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What brake pads do you guys recommend for a 2015 Beta Evo factory ?
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Cannot seem to load some pages on posts ???
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I use bp ultimate fuel only and according to their website that fuel does not contain ethanol .
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Thanks Dan great reply and most helpful cheers
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I always drain tank and use fresh fuel but I’m not mechanically minded enough to strip down carb myself ! and it would cost me a few quid if I needed to take to a mechanic every week to do that , so I’m just trying to find a happy medium so that I could carry out the maintenance myself .
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My beta 250 sometimes sits for a couple of months without use if Im busy at work and I don’t find time to get out . Im not very mechanically minded to be honest but I’ve just had a mechanic clean the carb for me as it’s been sat . And he said I should drain tank and the carb if I know it’s going to sit for any length of time or even if it’s being used most weeks I should at least drain the carb the day before a trial . Your guys advice on what is best and what you do would be most helpful . Tia
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Bought some of this oil from splat shop in thinking it would be a decent oil for my beta 2015 factory , it says 100% synthetic is this the same as fully synthetic ??? as beta told me to ideally use a semi synthetic so I’m confused now as want to keep the bike running well do any of you guys use this and is it ok ? Thanks in advance.
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Thanks everyone for the comments and advice you have all given much appreciated . ?
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I'm looking for advice on a new bike and unsure of what to go for ? I'm quite new to trials but have picked it up fairly quick I started with a beta rev 3 250 but now looking to upgrade, I'm sure a 300 would be too much maybe? but there seems to be lots about for my budget of around 4k .I'm set on a beta or a gas gas .What would you guys suggest thanks .
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Thanks for the info much appreciated
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Hi guys . What is the size of the allen key to fit rear axle on beta rev3 . Many thanks
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