fuel,air,water,smoke. . . . . .

[bikersdad]

Hi all,
new to this site bu still hoping someone might be able to lend a hand.
I am, as the name suggests, bikers dad. 20yrs after coming off my last bike I now find the bug coming ack as my son has got himself a little rieju 50cc supermotard. Trouble is the bike has a real long list of issues.
To cut a long story short we have spent many hours an £'s getting the electrics sorted and with the exception of the horn, dipped beam and electric start we are almost there.
The problem we have now is the actual running of the engine. Since getting it back on the road a couple of days ago it has been really smokey (white not blue) really difficult to keep going at low revs and occasionally requires petrol draining from everywhere in order to get it started.
None of this is helped by the fact the kick start has snapped off and it needs to be bump started.

My distant memories of 2 strokes suggests an imbalance in the carb or flooding. Strange thing is the bike never seemed to do that when we got it and before we garaged it to sot the electrics.

Any ideas anybody has would be gratefully received, but take it easy on me with the jargon please - I'm a bit out of touch
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[MarJay]

Sounds like the float in the carburettor has got stuck, allowing a greater flow of fuel into the engine. This flow doesn't stop when the engine is shut off, and dribbles down into the crankcases filling them with ming*. A good thrash ought to cure the ming problem, and a carb rebuild should sort the float problem.



(*copyright Stinkwheel circa 2004)
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British beauty: Triumph Street Triple R; Loony stroker: KR1S; Track fun: GSXR750 L1; Commuter Missile: GSX-S1000F
Remember kids, bikes aren't like lego. You can't easily take a part from one bike and then fit it to another.

[0l0dom0l0]

A good clean and rebuild of the carb wouldn't go a mis as stated. Also a plug change will help if it hasn't been done since the bike was back on the road.

Then take it for a good thrashing (about 15 miles or so), and that might cure other problems.

But yeah, that's pretty much what MarJay said

[bikersdad]

Not sure if this helps solve the puzzle or makes the puzzle no longer need solving, but just ahd a call to say that at the end of a 5 mile ride and whilst doing 40 the contents of the radiator empied themselves all over the engine of the bike which needless to say stopped running.

A quick removal of the head suggests no damage to piston but gasket has gone and there is a very small amount of water in there.

It never rains but it pours!!!
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God I wish I had never clicked on that bl**dy ad, but I did - so lets keep going!

[MarJay]

[hmmmnz]

my first guess would have been gasket,
but im sure after you replace that clean the carb she'll be sweet again
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Wiring Diagrams BIDNIP it bitches

[Hario]

water leaking though a broken gasket into the cylinder will show as white smoke, as will running way too rich, for example from a choke being on or poor carb setup.

I would replace the gasket and run her again, if she still smokes then going over the carb can only do good, but first i would check that the choke is opening and closing fully and that the air filter is in good shape.

in my experience white smoke is always either water or too much fuel.

[bikersdad]

Hi Hario, Hmmmnz nd Marjay,

New gasket set on its way so hopefully she'll run again and then can tackle the carb if needs be.
Gonna sound a bit thick I know, but once I've taken the cylinder head off, emptied out all the water and gunk, cleaned off the old gasket and replaced with the new one - can I just bolt it down, put some water in the rad and start it up or is there something else I need to check/fill/do first?

Cheers,
Bikersdad
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God I wish I had never clicked on that bl**dy ad, but I did - so lets keep going!

[Paxovasa]

Drain the oil out and replace oil and filter. Check the spark plug and give it a clean.
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