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Thread: 2 stroke warm start problems
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4th June 2008, 04:32 PM #1
2 stroke warm start problems
My flamin bloody motorbike doesn't like to start when it's warm and I can't find a reasonable answer online.
Was wondering if anyone could help?
ThanksMick
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4th June 2008 04:32 PM # ADSGoogle Adsense Advertisement
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4th June 2008, 04:35 PM #2
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
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4th June 2008, 04:39 PM #3
Well that's not much use. some bloke on the road mentioned vapour troubles from a leak in the carby
Mick
avantguardian
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4th June 2008, 04:42 PM #4
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
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4th June 2008, 04:54 PM #5
RZ250, it's a classic
Mick
avantguardian
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4th June 2008, 05:03 PM #6
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
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4th June 2008, 08:06 PM #7
no, this one
http://www.strappe.com/rz250r.jpg
I don't have any issues with plugs oiling up and my injectors work fine.Mick
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4th June 2008, 10:35 PM #8
Ginger check the fuel tank for water just a thought
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4th June 2008, 11:32 PM #9Senior Member
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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
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5th June 2008, 12:36 AM #10
What brand and type of plugs are you using
Ashore
The trouble with life is there's no background music.
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5th June 2008, 08:23 AM #11
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.Mick
avantguardian
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5th June 2008, 09:38 AM #12
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
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5th June 2008, 10:07 AM #13
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.Cliff.
If you find a post of mine that is missing a pic that you'd like to see, let me know & I'll see if I can find a copy.
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5th June 2008, 11:41 AM #14
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
taMick
avantguardian
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5th June 2008, 01:38 PM #15
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
Ashore
The trouble with life is there's no background music.
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