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Hi guys picked up a v100 in the past week it's kitted with a 135 malossi kit, anyway filled up with fuel earlier £5 of petrol works out at 3.47 litres so on my 2 stroke jug mixed it at 5 litres. Took it for a run and it was bogging so took out the plug which was pretty wet and black..so I'm guessing I'm running it to rich. Any advice please on what I should be running the mixture at?
Cheers Billy!
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2-2.5% 2T oil

So on 3.47 litres you would only need 75-85 ml
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is this the first time you have used this bike?

I use 3% on any kitted bike...
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Thanks for the reply! No I got her last week just never pre mixed before. I'm going to sound stupid just on my mixing jug it's only in litres so I was told if I got £5 of fuel it works out at 3.47 litres so mix 5 litres but it's not the right mixture after checking the plug and because it's kitted I'm worried to get it right!
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UTC quote
gnasher wrote:
I use 3% on any kitted bike...
.

Hi Gnasher....

What's the logic for 3% on kitted scoots (I'm not saying its wrong...I'm just curious)

Fabio

.
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Thanks Fabio! Again i sound stupid but I'm just trying to figure this out so 3.47 litres of petrol should workout in how many litres on the 2 stroke jug?
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not entirely sure ..higher revs..more heat perhaps..more lubrication needed

always been told to run on 3% when I've bought a kit..
and everyone else I know does it...

that bogging will be over jetting......probably
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the jug should have marks up the side...
if you want to run 2% just go to the markings...
see if it still bogs..
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It's been running fine just my first fill up of fuel so it's me who has got it wrong..will have to get a new jug it's only in litres.
As you said with it being kitted I'm just a bit nervous about getting it exactly right!
Thanks
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surprised the extra oil has done that TBH...
try 2 % with decent oil next fill up and see what happens..
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It was spluttering needed plenty of revs to get it moving it's been running fine until I filled up with fuel so checked the plug tonight and it's black and wet so I guessed I didn't get the mixture right!
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Yeah I'm useing good oil..Castrol power 1 tts
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I know a lot of people will think this is B~llox..
but it has happened to a few people I know, that there is dodgy fuel in the UK..that can cause symptoms like that...

but it could be too much oil....it was smoking a lot?
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I would keep it simple and just fill to the nearest litre rather than the nearest pound. make it easier for doing the mixture
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No doesn't appear to be!
Thanks for the help Gnasher!
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Yeah I always just stick £ of fuel never look at litres!
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UTC quote
you'll need to learn to watch the litres and not the pounds mate, you wont get a jug saying this much oil per pound
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jackson..it will be £2 a litre soon...should make it easier

robbing b~~tards
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maths was never my strong point anyway lol
my friend said mix it at 3% but with me I need it explained in simple terms as in if you fill up with £5 you use so many litres on the jug..I shall work it out!!
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you were pretty near with the full jug....just a little under 3%..
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Just under Gnasher?
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External inline image provided by member with no explanatory text

dont they have these over there on the other side o' the pond?
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UTC quote
Billy Anthony wrote:
maths was never my strong point anyway lol
my friend said mix it at 3% but with me I need it explained in simple terms as in if you fill up with £5 you use so many litres on the jug..I shall work it out!!
It has nothing to do with money man. It has everything to do with the amount of fuel you've added to the tank. You need to add 2% of the fuel added in 2T oil

For example, say you added 2 liters of fuel. You will need to add 2 liters * 0.02 (2 percent) = 0.04 liters. So, with your handy little measuring cup (you are carrying one with you right?), pour out 0.04 liters of 2 stroke oil, and pour it into the fuel tank. Done.

The measuring cup shown above even does the math for you. The cup is graduated with marks in both liters and gallons. If you just added 3 liters of fuel to the tank, you pour 2T oil in the cup until it hits the 3 L mark. Then pour that into the tank. Not sure how much easier it gets. Except maybe autolube,
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Just get a 2% mixing cup and use it.

http://www.scooterwest.com/items/?_pageCCS=t#page=/item_details/Vintage-Vespa-Mixing-Cup-2-/442

External inline image provided by member with no explanatory text

2% is fine for kitted motors.
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UTC quote
here's a tip for rookie pre mixers....

only fill up in increments marked on your mix cup. Even if the tank might hold another quid of fuel, just leave it. That way you mix the exact about of oil in that you need.
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I wish my tank was a little bigger. I find that when I have to go over to reserve, I can't quite get 5L fuel / 100ml oil into the tank.

My plastic fuel can has a handy 5L mark, and my measure cup has 100ml, so that combo is a no brainer to use.

i take the can to the petrol station, set the dispenser to "fill", and just tick off 5l on the gauge.

my journey is short and i don't go past a fuel station, so fill up at home this way...
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UTC quote
Two percent of 3.47 liters is .0694 liters.

Please try wolframalpha.com for all kinda of calculations in the future.
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Bar Italia Classics wrote:
Two percent of 3.47 liters is .0694 liters.

Please try wolframalpha.com for all kinda of calculations in the future.
I just downloaded the ipad app... that thing is SMART!!!! Thanks for that Bar Italia!!! just saved what few brain cells I have a tremendous beating.
I may, however kill them playing with it. Laughing emoticon
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rod_r wrote:
I wish my tank was a little bigger. I find that when I have to go over to reserve, I can't quite get 5L fuel / 100ml oil into the tank.

My plastic fuel can has a handy 5L mark, and my measure cup has 100ml, so that combo is a no brainer to use.

i take the can to the petrol station, set the dispenser to "fill", and just tick off 5l on the gauge.

my journey is short and i don't go past a fuel station, so fill up at home this way...
yeah i felt it too, my not so normal smallie can only have 5liters of fuel and its distrubing when i go out to a mountain, cause there's no fuel stasiun up there, the worse part is my carb sit very high compare to other smallie almost equal with the fuel tap and i cannot use the reserve till it dry Crying or Very sad emoticon

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UTC quote
Vader19 wrote:
Bar Italia Classics wrote:
Two percent of 3.47 liters is .0694 liters.

Please try wolframalpha.com for all kinda of calculations in the future.
I just downloaded the ipad app... that thing is SMART!!!! Thanks for that Bar Italia!!! just saved what few brain cells I have a tremendous beating.
I may, however kill them playing with it. Laughing emoticon
Yeah, it's pretty damn awesome. Run the introduction tutorial to see just how much stuff you can discover with this new tool. We are working on getting them a whole bunch of specialized scooter information to add to their database.
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oopsclunkthud wrote:
2% is fine for kitted motors.
.

Patrick

That was my understanding too..... why is it that many use 3% I wonder?
Fabio

.
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If your plug remains wet and black after mixing at the correct 2%, then you need to take a look at your mixture (jets), as it would appear to be too rich.

Before you go changing any jets, be sure you know what you are doing or have reasonably competent coaching. Too lean is far more "deadly" to an engine than too rich.
OP
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Cheers guys for all the helpful info!
I was rideing in the city yesterday so i wonder if thats anything to do with it as she needs plenty of throttle so im wondering if i have fouled the plug that way???
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A few friends ride tuned scoots a GP 200 and TX 200 i asked for there input and they said mix at 3%.
I would just be worried about running it to lean and doing some damage!
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Bar Italia Classics wrote:
Vader19 wrote:
Bar Italia Classics wrote:
Two percent of 3.47 liters is .0694 liters.

Please try wolframalpha.com for all kinda of calculations in the future.
I just downloaded the ipad app... that thing is SMART!!!! Thanks for that Bar Italia!!! just saved what few brain cells I have a tremendous beating.
I may, however kill them playing with it. Laughing emoticon
Yeah, it's pretty damn awesome. Run the introduction tutorial to see just how much stuff you can discover with this new tool. We are working on getting them a whole bunch of specialized scooter information to add to their database.
That would be so bitchin' Thanks for that too! I'll run the tutorial (I'm one of those "throw the instuctions away with the packaging type, and fiure it out the long way" types... but this thing can be a brain scramble... it's good.
Cheers
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UTC quote
i guess i am the only one use 5% mixture in a rotary engine

but i gotta admite i never have a problems with the piston nor the barrel for the last 12 years but i did change spark plug quite some time and here is how my spark plug and my cylinder head look

External inline image provided by member with no explanatory text

External inline image provided by member with no explanatory text
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UTC quote
Billy Anthony wrote:
A few friends ride tuned scoots a GP 200 and TX 200 i asked for there input and they said mix at 3%.
I would just be worried about running it to lean and doing some damage!
In those cases, they are actually mixing at LESS than the stock factory suggestion.

To be clear, 2% is for rotary-valve Vespas. Piston ported bikes need more oil so that it actually lubricates the crank bearings efficiently. Most Lambrettas should run a 4% mix. Vespa GS160s, SS180s, piston port VNAs, VL1-VL3 handlebar bikes and VB1s should run 5%. All 125cc and lower/early handlebar bikes as well as GS150 should run at 6%.
UTC

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UTC quote
bar italia..I presume you know a TX 200 is a p range engine in T5 frame..
2% for that one..


and these people were asked their opinion on the mix, not what they use in their own bikes...

everyone I've ever met in the UK uses 3% mix on kitted bikes...
there must be a reason for this..


even the autolube delivers more than 2% at high revs...
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UTC quote
gnasher wrote:
bar italia..I presume you know a TX 200 is a p range engine in T5 frame..
2% for that one..


and these people were asked their opinion on the mix, not what they use in their own bikes...

everyone I've ever met in the UK uses 3% mix on kitted bikes...
there must be a reason for this..


even the autolube delivers more than 2% at high revs...
Sorry, thought that was a typo for TV 200. I was aware of the Spanish GS200 which was a T5 with a 200 motor, but sorry, never seen a Vespa TX. I guess you learn something new every day.

I still disagree with 3% on any case-inducted Vespa, kitted or not. Remember, oil is the enemy of power. Yes, an auto-lube Vespa consumes nearly 3% at full throttle, but runs closer to 1.5% in the lower throttle range. Premixing is always a compromise between engine protection and power, and of course there is a difference between an engines needs on the track vs what you do to ride around town and vs the motorway. But 2% is entirely efficient for any road-going, freeway going, case-inducted Vespa, especially with modern oil formulation and performance.
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UTC quote
would be interesting to see a dyno test of an engine jetted to 2%..and one jetted to 3%...

didn't know the autolube got up to 3%...

if it does at full throttle ..I'd like my kitted pre-mix engine to be getting the same amount...
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