GILERA DNA 50CC BOGGING DOWN SOMETIMES WHEN RIDING HELP!!

dna50 · Renault 5 Driver Joined: 13 Jan 2011 Karma :

MY DNA 50 IS FINE MOST OF THE TIME WHEN IM RIDING IT ON THE ROAD BUT EVERY NOW AND AGEN THE REVS DROP SLIGHTLYY AND WHEN I DO THE THROTTLE IT BOGS DOWN I THEN GET HORNED AT AND HAVE TO PULL OVERR AND REV IT UPP A FEW TIMES THEN I CAN DRIVE OFF AGAIN. THIS SEEMS TO BE GETTING WORSE CAN ANYONE HELP PLEASE I REALLY DONT WANT IT TO HAPPEN AT A ROUNDABOUT. THANKS
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hsaeed

P. · Red Rocket Joined: 14 Feb 2008 Karma :

COULD YOUR CHOKE BE STUCK ON LIKE YOUR CAPS LOCK BUTTON?

Hows your spark plug looking?

dna50 · Renault 5 Driver Joined: 13 Jan 2011 Karma :

nope i think its got an automatic choke but its never been touched. i need to have a look at the plug ill do that tomorrow. but even if it was running rich or lean it would bog down all the time if im correct? my dna is only doing it sometimes
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hsaeed

connornrg · Scooby Slapper Joined: 05 Jul 2010 Karma :

have you put a sports exhaust on it and not rejetted?
is the bike FULLY warmed up?
lots of things!
HOPE THIS HELPS
YOURS SINCERELY ANNOYING 16 YEAR OLD POSTING ON FORUM
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Bikes (Not Bikes Really Just Shitty Mopeds)
**04 - Piaggio NRG MC3**02 - Yamaha Aerox 50/100**07 - Piaggio NRG Power - Shit.**

dna50 · Renault 5 Driver Joined: 13 Jan 2011 Karma :

no its got a standard exhaust and yes it does it when its warm and cold. it hits that bogging down spot at around 6-7000 rpm which is around 26-30mph
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hsaeed

cb1rocket · World Chat Champion Joined: 30 Jan 2010 Karma :

check the exhaust isn't leaking and check the rollers are in good nick.

check plug as well.

lukamon · World Chat Champion Joined: 18 May 2007 Karma :

I WOULD GUESS ROLOLERS ARE FLAT AND ARENT SLIDING PROPERLY THUS CAUSING THE TRANSMISSION TO STICK IN "HIGH GEAR" AND BE ABLE TO PULL AWAY AGAIN.

DOES IT HAPPEN ONLY WHEN YOU TRY TO ACCELERATE AGAIN AFTRER SLOWING DOWN? IF SO ROLLER ARE DEFINATELY IT.
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killa wrote: Im an ass man myself

dna50 · Renault 5 Driver Joined: 13 Jan 2011 Karma :

nope its not the rolllers it always accelerates very good its when i hold the throttle on for a while e.g if im on a straight long road it comes i gave it a good old rev up todayy and it seems to have gone it only comes once every few miles or so now, and i took the plug out and the tip was brown but it was black around the tip
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hsaeed

nathan_h_1995 · L Plate Warrior Joined: 11 Jun 2011 Karma :

I'm having the same problem here!

I'm finding it easy to get to about 15mph, and then i go for more, it bogs down and the revs go to about 3000rpm. But they do get up to about 7000rpm after reving it repeatedly a few times.. Sometimes i do get 10000rpm, and it gets to 35mph but only down hill, but i hear the engine picking up and once at that speed it stays there and doesn't bog down. If i take the revs off, then put them back on it bogs again and i'm back down to 15-20mph...

Now i don't have a baffle plate on the carb... And i've been told its rollers, but i'm not so sure!

It has a sports exhaust, standard rollers and standard jet. The only thing that has been changed is the exhaust.

HELP ME Sad

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Nathan Harrison

BARE KNUCKLE RIDER

GREENI3 · World Chat Champion Joined: 26 Nov 2010 Karma :

Nope. · World Chat Champion Joined: 16 Feb 2011 Karma :

GREENI3 · World Chat Champion Joined: 26 Nov 2010 Karma :

Ye, he said 'standard jet' and 'the only thing that has been changed is the exhaust' That sounds like he hasn't done anything to the jet, hence why I said that he should change the jet. Well that's how I interpret the word STANDARD.

As for the rollers, I have heard numerous people on here suggest changing the rollers when putting a sports exhaust on to see a noticeable change in acceleration, so again, wtf's wrong with saying that?

It's a possibility that it just needs a de-coke, but if it's a brand new exhaust that has just been put on, then I highly doubt it.
Mine had managed to go for about 6 months until it needed a de-coke.

To the OP, take your exhaust off and take it for a run to see if it runs any better.
It will be a bit noisy, but is an easy and quick way to find out if thats the problem.
You'll just have to do a bit of trial and error.

If it runs better with the exhaust off, drop me a pm and I'll send you a guide of how I de-coked mine with caustic soda.

Nope. · World Chat Champion Joined: 16 Feb 2011 Karma :

GREENI3 · World Chat Champion Joined: 26 Nov 2010 Karma :

dna50 · Renault 5 Driver Joined: 13 Jan 2011 Karma :

i found out what it was, there was sum dirt stuck in the jets. i took the bowl off the carb wiped it all out so it was bone dry and clean, and i took the jets out gave them a good clean and dry and blew threw them put it all back on and it fired up and now it doesnt bog at all its perfect. cheers for the help
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hsaeed