Thread: 2 stroke warm start problems

Airo-Start if your desperate but beware you'll need to rebuild the engine after a few uses

GingerMick is it 2 stroke or 4
Is it a honda

Well that's not much use. some bloke on the road mentioned vapour troubles from a leak in the carby

Sorry Ginger its 2 stroke

If there is vapour leak a new Gasket may solve the problem even checking to see if carby is loose

RZ250, it's a classic

this the one

http://www.motorcyclespecs.co.za/mod...rz250%2080.htm

Just found this

is that your quetion
http://www.classicmotorcycling.com.a...?TOPIC_ID=1417

no, this one
http://www.strappe.com/rz250r.jpg
I don't have any issues with plugs oiling up and my injectors work fine.

Ginger check the fuel tank for water just a thought

sounds like its running too rich.....screw the fuel mix needle all the way in as far as it will go ...then turn it back 2 1/2 turns ...give or take a 1/4 turn it should be about right ....also pull the plugs and see if they are fouled ....might as well clean em and regap em while your at it ...I would probably dump all the fuel and refuel with a fresh and accurate supply should this fail......if this doesnt fix it then you have one of these problems

sticky/burnt valve ....worn carby gasket or dirty needle ...or the float level is screwed ..

good luck

What brand and type of plugs are you using

NFI, but I do ride around with the revs up, to make sure the plugs don't gum up and also to make sure that if I need to go it goes sounds a bit like a water ski, but light and agile and would go even faster if I didn't weigh 105kg.
A bloke walking by me pushing and kicking the thing said it would be a carby gasket causing a vapour lock. or something like that
The problem is so infrequent that I couldn't be bothered taking it to the mechanic.

Ginger this is sounding more like a loose carby bolt/nut/stud caused when it gets hot it then sucks air throwing out the fuel air mix

Now you need to be careful DO NOT over tighten as you can literally pull the stud through the body of the cardy being light material Alli.

mate had similar on his think RD360/380 way back and the older road 250's did it as well
its a simple fix if it is that but best thing with it is a new gasket as well

If it progresses it can stall on you when you dont want it to ie: in a corner powering on, trying to pull out of the way of blind motorists

90% of problems with 2 stroke motors are the plug.

Try a new plug.

I've even had a 4 stroke Honda motor that would not run once it was hot, it was the plug.

Serviced only a few weeks back, so plugs are quite new, and thanks wheelin, just gotta find the carby now, bloody farings look good but dont make for easy access
ta

Mate plugs aint just plugs but the engine is designed for a particular plug , try for your model yammy try DENSO Hot U standard plugs, or better yet get a BMW , or even a Honda just not that 2 stroke rubbish