trouble starting

basically i have a aeox with the following mhr t2 70 kit , 28mm flatside carb malossi reed block , malossi manifold , gear up stage 6 85mm crank also it has been ported etc to fit the 70 kit flowed etc

the thing is it started and ran fine but i tried it up and down the road a few times and then it was struggling to stay started and just cut out but now it sounds like it wants to start but wont it sorta starts then cuts out and duno y as before i rode it it was fine its runnig a petrol 2 stroke mix any ideas

 

possibly over ritch mix, could be flooding, could be a spark plug oiled up.

 

the jet init is a 140 main and idle is a 38 standard standard main is 138 and yee the plug was quite oily did clean it a try to start it but no luck i have right grade plug to

 

not trying to be nosey but you said you had the work done by bys?

did they jet the carb for you aswell etc?

140 jet seems silly.

what premix ratio are you running? because aeroxes have an un-adjustable auto lube so you could have just extremely overoiled it.

therefore fouling the plug hence its not starting.

 

i had bys port my engine etc not fit anything had a chat with them about parts etc i got the carb from them and they jeteed it to suit my set up did run straight away wen fitted and every time after justwen i tried riding it this has nw happen plug is oily mix is 33 to 1 i fink nt sure

 

u sure its 140 ??? , thats flippin hench

 

its a 28mm carb and standard is 138

 

yeah abut 28 mm's arent made for 50's are they, theyre jetted for 125's/172's.

 

look the 28mm will run on my setup trust me with what i have it should run it quite easily as i say im running high end parts specd the way u see the track aeroxs minus the mallossi iner rotor

 

The 28mm carb is fine, I think what jamie is saying is that the jet is massive for a 70cc.

Whip the plug out give it a clean, also I thought it needed 50:1 premix?

 

as i say 33 to 1 was wat i s was told found the plug to be oily but wen cleaned sorta started but cutout and wont actually run ny one no anyt places local around medway or london thatll set up my carb ?

 

my 180 only runs a 102 jet on a 25mm carb

 

koso 28mm stansrd jet 138

 

tied a down jet will not run at all and with the 50 to 1 premix does this icrease the oil mixed in with it i would have got a kehin but just to dere had a delotoro but had the same problem

 

add anuva go at me bike 2day as it was kicked it over started then cut out tried a 25 to1 mix this time tried doen jets etc tied a 120 as it smallest i hav no luck finding the plugs oily by chance do u reckon it could be the plug or reeds

 

Whip the reeds out and check that theyre sealing against the reedcage properly. Also when you change the oil mixture give it abit of time to run itself through before you assess the difference. I would stil order some smaller jets and see how it runs. does it accelerate fine up to half/three quater throttle?

 

well as i say before it done the spluttery wont start part it was fine but i had a delotoro or dellorto carb on it and it ran fine had a 120 jet init as i say ran fine before hand went up and down my road a few times fine that was with the 28 koso and 33 to 1 premix then for some reason just spluttered and wudnt start so im puzzled im tryin all diffrent solutions even as i say spoke to the bloke at the shoop who tunes these type of bikes but he was puzzld also he said should run fine i no the jet is quite big but it ran fine so im unsure what to do just want it sorted as i have spent alot of moey on it and dnt wanna spend loads mor if it only some thing simple i am going to try a new plug