Why does my bike bog down when im riding it??

[C-R Team]

Hey, for some reason when riding my bike, it always seems to bog for a few seconds before kicking in. When riding it, no matter how fast im going if i come off the throttle and back on it bogs for a while then kicks in... Pull off from stand still is better, i mean 7/10 pull off from stand still is good, but other times its makes a bogging noise for a few seconds climbing speed slowly then kicks in and im away lol.
I have a Gilera Dna 50cc stock everything apart from Malossi rollers, a leo vince TT pipe and a 62 main jet to suit the exhaust.

I cant figure out why the bike is like this, ive tried tuning it via the mixture screw and idle screw but no improvement.
When i bought it, the owner said the bike had be sat sown for a whole year with the fuel etc drained but ive riden it quite a bit since then and it should be normal bu now right? Ive had the bike around a week now maybe two.

Thanks for the help guys!!
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[moonzoomer]

[C-R Team]

My question wasnt how do i make my bike go faster, i have a upgraded Mazda RX-8 231 for tearing the streets up with!! My question was, WHY IS MY BIKE BOGGING?

Of course i know what the screw does and i wouldn't have touched it if the bike was running smooth without bogging in the first place!! What i am describing is not normal behaviour for the bike you dont need to be a scientist to know that.. ALL i want is to have the bike running the way its meant to run.. Simple..

Can someone else who actually cares and would like to help me with this, give me some advice please .. ANYONE else who doesnt care, can you keep your silly comments to yourself!

Thanks
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[bladerunner]

Either ...it's jetted wrong or float height is to high by the basic sounds of what you've described...do you know if it's a std carb....and not much of a scoot expert but is it automatic choke...could this be staying on

I'd check the air filter and strip the carb take the jets and emulision tube out and remove any varnish/ gunk left from old fuel evaporating when the bike was lay up for a year.....the jets on these things are tiny
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Current bikes...cbr929, KDX200's, Rd125lc mk2, RGV250's

[lukamon]

if you are "tuning" the bike via the mixture screw, then you do not, in fact, know what you are doing. if I was you I would put the bike back to standard. the DNA actually has a pretty good watercooled engine that will do 50MPH (speedo) stock, which is faster than most peds. exhaust CAN make a difference WHEN set up PERFECTLY, which is actually a very hard thing to achieve, and you usually get vastly reduced engine life as a bonus.

plus the standard exhaust looks better for the style of the bike rather than the shitty "curled turd" of the TT et. all.
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killa wrote: Im an ass man myself

[Boxing]

[C-R Team]

Thank you for your response bladerunner, you are the first person to actually give me some useful advice on here so far

Right, the carb i believe is a standard one. Ive had to re jet the main jet to 62 from 53 (advised by my local shop) and was told the idle jet wont need upgrading at all :S..

The float height you mentioned about, does interest me though, bcos i noticed it kind of just hangs under its own weight if i take the float bowl off.. Is that normal?? Isnt it meant to have some tension behind it? Maybe spring loaded?? I dont know but sometimes i have noticed fuel does leak from the drain line at the bottom of the carb maybe thats a float related issue..? (I have fully tightened the stop screw)
I have a manual choke on the bike, and i took apart the carb and cleaned it when i replaced the main jet.
My air box is standard with one sponge.. Looks clean.
What and where is the emulision tube though?? i havent heard of it.

Thanks mate
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[C-R Team]

Boxer, why is that so hard to believe LOL. Its like people think i have time to sit on a forum and lie to make myself sound good.

YES i own a 2005 RX-8, i also OWN a 2006 50cc dna.
GET OVER IT! smh..[/quote]
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[gavcarter]

[C-R Team]

Mate u blatantly retyped ur own version of that sentence and posted it LOL nice try but next time dont post it right under my original comment.. MUG...
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[bladerunner]

Well if it's leaking fuel out of the over flow the float height is wrong or the valve ain't sealing which means you have a higher level of fuel in the float chamber that's going to make the mixture rich....which can then cause the bogging down/four stroking if that's what it's doing when you roll off then back on the throttle,so get that sorted first

Take out the float needle and check it and the seat for wear or debris. If its been left with no fuel in for a year and it's rubber tipped it may have gone hard ......sometimes they come to after a bit of use sometimes they don't ......my RGV track bike used to piss fuel out of the over flow for the first half day of the new season but usually came to for the rest of the year!

As for the float hanging down...with the carb upright that's normal..if you turn the carb upside down you should see the last few mm is spring loaded by the needle valve. I can't tell you the float height settings for the bike however, that you'll need to look up.

Leave the jetting as is for now untill you get the float sealing as if your trying to jet down to compensate for the varying head of fuel in the carb you'll be pissing in the wind and will most likely end up running dangerously lean if it does decide to seal !!!!!
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Current bikes...cbr929, KDX200's, Rd125lc mk2, RGV250's

[gavcarter]

[C-R Team]

Perfect! That sounds like its the culprit.
I'll go about fixing/replacing the float. When i fix the issue ill update this post for other peoples refference

Thanks again mate
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[C-R Team]

Hmm okay i do usually take it all as a bit of banter but i have tried to get some advice on here since my joining date lol and have had nothing but silly remarks. I guess tonight i have had my back up agaisnt the wall but as u said this is the BCF way im sure im not the first or last to take offence lol. No harm taken
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