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DT125R Forum -> Tuning -> bike will not run right since topping up 2 stroke oil
Post Info TOPIC: bike will not run right since topping up 2 stroke oil
dudley


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bike will not run right since topping up 2 stroke oil
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hi all

i top up the 2 stroke bottle this morning ready for a day of riding...all was going well until i stopped the bike so we can have a drink and stuff 50miles in.....then the bike would not start at all it would just not fire at all....so we try to bump it and it fired up but would not tick over at all...but will run if a kept the revs up on it tryed to adjust the tick over at that did not make a different......so i got it home..at a steady 30mph as if a went any more it will just start to mis fire....

well i got home i had a look at the bottle of 2stroke and ready the back and it say for 2 stroke injectors and can be pre-mix at 50:1


now have used the wrong oil my mistake

many thanks if anyone can help me


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delboy


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cheap 2 stroke ???

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dudley


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Castrol super TT is what i put in mate



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delboy


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carb needs setting up

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dudley


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but was running ok until i topped the bottle up.....thats what i can not understand.....but going to give the carb a good clean tomorrow any way just in case

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....


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oil too thick, revert back to old oil, castrol is thicker and higher grade, its a fecker for small 2 strokes

works great on bigger bikes

basically use that oil and set up carb for it and keep using it or

revert back to the old oil

its feckn great oil and will save a seizure although is a higher grade and too thick for your set up

it makes it hard to burn fuel when its too rich so makes it harder to start engine unless you bump it and more fuel goes through which will allow it to ignite better until you stop, the fuel becomes less and dies out again due to too much oil and not enough fuel

hope this helps mate


smile.gif

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SimsonS51E


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New Spark Plug ...

NOW !



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SimsonS51E


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Is the castrol you put in Synthetic ... [now called FULLY SYNTHETIC ??]

or semi synthetic [now called Synthetic ??]

and what was in the tank ???

& have you mixed an old type oil [cheap $hite from petrol station] with a modern fully synthetic oil [or the other way !]

as i don't think the two will mix, in fact they may emulsify & form claggly lumps which MAY block up your oil feed system





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dudley


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gaz your right mate just been reading up on it so tomorrow going to clean the tank and go back to the other oil that i used in the last dt....

cheers mate

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no probs good to here you'll be back on the old frog and toad mate

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medxb183


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there is no problem whatsoever mixing semi with fully synthetic 2t oil.
,i use castrol tts power1..have used it in modern and old strokers,...bit high on the price but never had any problems with it.

-- Edited by medxb183 on Sunday 9th of August 2009 09:25:39 PM

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dudley


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this is the one i put in today SIMSONs51e

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alrgt mate i reckon it will run fine on your bike if you always use it and your carb is set up for it but it is a thicker grade oil, all 2 strokes new or old can use it and is better to use it! although if your carb is set up for weaker grade it will cause this problem that dudley is getting, dont get me wrong its a good oil if your carbs set up for it

if you tweak carb and keep to that oil then thats cool

smile


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dudley


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quick up date

after changing the 2 stroke oil back to wot i used before and clean the plug the bike will still not tick over or start on starter only starts if a bumb it and i have to keep the revs up to keep it running...

so have taken the carb off and given that a good clean with carb cleaner and checked the jets..

tried to adjust the tick over screw and it will still not run

so i am now running out of ideas what it is

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it will still be in your oil pump and tubing mate, dont start the bike, disconnect the tube that comes from the oil pump to engine and pull throttle open and close until you have pushed the old s**t out, then reconnect and try that mate, is there compression too?

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dudley


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will go and do that now gaz

compression seems ok mate....

bumb it this morning when for a spin around the block and it seems to still ride ok it just will not tick over......


just going to charge the batter up as that is now flat like road kill

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Gixergav


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The idle part of the fuelling circuit is blocked.Clean the carb spotless.Take the pilot jet out and blow it through with compressed air.
If this is blocked it will not start and not idle.It will only fire after bumping because the engine has vaccumed more fuel through.
The castrol oil you are using is fine.I've never heard of it blocking oil lines.

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dudley


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hi there

clean the carb today mate did all that what you say...it looks like new carb......spoke to a few people today they said the same thing ever time mate castrol is a to high grade for a small 2stroke so it not burning it so it keeps on fouling the plug....

but i have just found out after testing the pump that the 2stroke pump as ****ed up and so i have spat a ring stright into my exhaust...(lucky)

so going onto pre-mix now and going to replace the ring in the morning

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medxb183


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The following engine oils are available as an upgrade for your YAMAHA DT125R, DT125RE (Motorcycles) 1988-


923.jpg
Motul 710 2T High Performance 2 stroke engine oil injector or premix 100% Synthetic Anti-Smoke
SizeYour Price inc VAT
1 Litre£10.99£9.89
4 Litres£42.78£38.50
2 x 4 Litres£82.80£74.52
747.jpg
Castrol Power 1 TTS 2T Fully Synthetic 2 Stroke Engine Oil
SizeYour Price inc VAT
1 Litre£11.22£10.10
5 x 1 Litres£54.46£49.02
781.jpg
Silkolene Comp 2 Injector Synthetic Ester Based 2-Stroke Motorcycle Engine Oil
SizeYour Price inc VAT
1 Litre£8.48£7.63
4 Litres£32.64£29.37
2 x 4 Litres£62.02£55.82
4 x 4 Litres£117.50£105.75
1 x 20 Litres£139.53£125.58
784.jpg
Silkolene Comp 2 Premix Synthetic Ester 2-Stroke Engine Oil For Competition Off-Road Bikes
SizeYour Price inc VAT
1 Litre£9.27£8.34
4 Litres£35.80£32.22
2 x 4 Litres£68.02£61.22
4 x 4 Litres£128.88£115.99
collapse_blue.jpgOIL and FILTER SERVICE PACKS
The correct amount of oil + a bit extra + approved OEM specification oil filter.Click to hide

An oil and filter service pack is not currently available for your vehicle. However, we do have a full range of engine, gearbox and other oils available; please see the 'Engine Oils' and other sections.

expand_blue.jpgOTHER PRODUCTS specially selected for your YAMAHAClick to show

denso-iridium-power.jpg
Denso Iridium Power Spark Plug IW27
SizeYour Price inc VAT
single£9.95£8.96
4 pack£35.83£32.25
6 pack£53.75£48.37
collapse_blue.jpgOTHER PRODUCTS WE THINK YOU'LL FIND OF INTERESTClick to hide

946.jpg
Motul MOTOCOOL EXPERT Ready to use cooling liquid
SizeYour Price inc VAT
1 litre£4.54£4.09
765.jpg
Castrol Bike Polish Aerosol
SizeYour Price inc VAT
1 x 400ml Aerosol£6.28£5.65
761.jpg
Castrol Chain Spray O-R Aerosol
SizeYour Price inc VAT
1 x 400ml Aerosol£6.88£6.19
775.jpg
Silkolene Carburettor Cleaner Aerosol
SizeYour Price inc VAT
1 x 400ml Aerosol£7.13£6.42
860.jpg
Silkolene CHAIN CLEANER aerosol
SizeYour Price inc VAT
1 x 600ml Aerosol£7.69£6.92
953.jpg
Motul MOTOWASH Concentrated cleaner for bikes
SizeYour Price inc VAT
1 Litre£7.95£7.15
793.jpg
Silkolene Foam Filter Cleaner
SizeYour Price inc VAT
4 Litres£23.18£20.87

If your motorbike has engine or performance modifications, please click here for expert advice before ordering, as you may require a different oil.


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meds
medxb183


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The following engine oils are available for your YAMAHA DT125R, DT125RE (Motorcycles).
For most vehicles you can purchase an oil filter separately; please see the 'OTHER PRODUCTS specially selected for your YAMAHA' section below.


928.jpg
Motul 100 MOTO MIX 2T Lubricant for 2 Stroke engines
SizeYour Price inc VAT
1 Litre£3.90£3.51
4 x 1 Litres£15.00£13.50
927.jpg
Motul 510 2T 2 Stroke engine lubricant
SizeYour Price inc VAT
1 Litre£6.81£6.13
4 Litres£26.67£24.00
2 x 4 Litres£51.61£46.45
743.jpg
Castrol Act>Evo 2T 2 stroke motorcycle oil
SizeYour Price inc VAT
1 Litre£7.36£6.62
5 x 1 Litres£34.96£31.46
844.jpg
Silkolene SUPER 2 PREMIX SAE 30 Semi-Synthetic Universal Premix 2-Stroke
SizeYour Price inc VAT
1 Litre£7.46£6.72
845.jpg
Silkolene SUPER 2 SX Semi-Synthetic 2-Stroke Engine Oil For Off-Road Motorcycles
SizeYour Price inc VAT
1 Litre£7.46£6.72


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meds
dudley


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well the bike is up and running agen now it as spat both piston ring to bits....and the oil pump had given up the ghost aswell...what the best ratio to run the bike on for pre-mix i am going to take a guess at 50;1

this the damage to the piston


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it worked better in my head so many things do i don't understand..................2000 husqvarna sm125s.....SOLD....2009 ktm 125sx.....2002 yamaha dtr125sm project....SOLD......cagiva super city 125 project
Gixergav


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40:1 mix is good for a streetbike

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ben350


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Dont forget that if you close the throttle on a pre-mixed bike then your engine is getting no lubrication, bear that in mind when coasting down a long hill.....

Personally I'd get another pump as normally they are very reliable.

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robby963


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right someone please tell me, i have a 2stroke bottle opposite the radiator, where does the 2 stroke pipe go 2 coming off the oil bottle ?

sorry for being vague

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R Hartley
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here



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robby963


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ok cheers for the help, but what about the other one, i have 2 pipe holes and if that one goes there what about the other one ? and plus i dont have my autolube set up or cabled, can i still use the bike without doing major damage ?

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dudley


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if you have not got the autolube set you will have to pre mix....so when you fill up you need to add 2stroke oil to the fuel

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robby963


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do you know the ratio by any chance, not to worry if you dont, thanks for all your replies anyway :)

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R Hartley
dudley


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i ran my old dt on pre mix and was pre mixing at 50:1 mate...

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