Oil ratio

Hello, what is the fuel/oil mixture of the autolube system on a 2005 aerox 50cc?

 

Anyone?

 

Somewhere between 25:1 and 33:1. Start at 25:1 (4%) and work downwards 33:1 (3%). Work blocks this site or I'd have answered sooner.

 

No I mean the standard ratio, not pre mixed

 

What does the bike automatically put through?

 

It's going to be around 5 to 6 millilitres per minute at full throttle. You'd have to run the engine on premix while you checked and adjusted this though. Why do you need to do this when the carb and pump have timing marks? Has the carb been changed and you can't set the pump up as standard?

 

Well on my girlfriend´s scoot- the answer is not enough! But going on the basis of my ovetto when it had it's oil pump and the colour of the plug- i would hazard a guess at 3 percent.
But if the nylon worm gear drive is worn, or the pump itself is faulty- look out. Plug is grey and there's nothing you can do to the carb/ upjetting that will solve it.

 

I'm eventually going to be getting a 70cc kit and wanted to know what the ratio of the standard areox 2 stroke pump an if I need to get a adjustable pump, I've seen them in pedparts for £30 and it's not a lot if it means I can run more oil through while I run my kit in

 

@ Turbovetto

Could you fit the Dell'Orto electric oil pump that runs from the CDI to your bike, as fitted to later Peugeot Trekkers, etc?

 

Probably. And thanks for the idea. I believe there is now an adjustable after market oil pump for Minarelli horizontal engines. Which are not adjustable stock.
But I'm using the KISS principle for now - and running her scoot on pre mix. This is easy to do as I buy petrol 20 liters at a time and mix it in the garage. Where I live- the petrol is cheaper across the border.

 

The oil pumps are either Mikuni or Dell'Orto that use the Dell'Orto CDI.

 

It's not good to run your bike on pre mix, cause when your not on the throttle it's not getting any oil surely?

 

So do I need more oil than the standard when I put a 70cc and carb on? The jet size will be roughly 100 but the oil will just be the same amount no?

 

With pre-mixed, if the bike's getting fuel, it's getting 3% oil, irrespective of engine speed.

The electric pumps fitted to later Peugeots run from a signal from the CDI, so the oil delivery varies with the engine speed.

 

no because scooters run without using any fuel at a standstill dont they

premix means oil mixed with the fuel.. if the engines getting fuel itll be getting oil. prefer to run mine on premix. alot easier and trustworthy than autolube.

 

But when you haven't got the throttle open no fuel/oil is going through

 

yes there is. else the engine WOULD NOT IDLE WITHOUT FUEL. without FUEL engine will NOT RUN or stay running without THROTTLE. premixing means both oil and fuel will go to the engine whilst still on idle.... do you want me to send you a long PM about how an engine works and explain it just like i do to the level 1 15 year olds that i teach?

 

No - it´s mechanically linked to crankshaft speed (or cdi as merlin says) - so there's always oil in proportion the the speed of the engine(in theory). (reply to steve)

 

even with autolube system there is OIL AND FUEL going to the engine WITHOUT THROTTLE to keep the engine running.

 

What about the fuel inside the float bowl? That has fuel mixed with oil inside it. If oil separated out from fuel then mopeds wouldn't have survived for so long without autolube systems; autolube only came fitted on bikes in the mid '70s.