ybr cut out doin 50mph

[chappy]

Hi there on the way to work this morning doin about 50 on the a2 and the ybr cuts out after about 20 miles the engine sounded slightly diffrent and all power goes .
At first i put it down to out of petrol because near the red but after i got pick up and put petrol in still wont start . Iv Check spark plug and its sparkin just sounds like somthing stopping it from starting any ideals and help as this is my daily comuter

[monkeybiker]

Could be water in the fuel. Is it a carb model? You could drain the fuel out the carb bowl and then see if it will start with fresh fuel in the carb.

[Copycat73]

was it raining ?
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[Northern Monkey]

FIFY

[chappy]

The bikes a 2010 model so no carb .
Yes it was raining and was in wet for 20 miles before cutting out
nerver had problem in rain before tho .
Could it be the fuel filter need cleaning as petrol was right near red so could of sucked crap in been told . .
Any other ideals as i need to get it goin tonight cant have another day off work .
Thanks for help

[john24ssj]

Before it cut out was the bogging/sputtering?
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Bikes: Honda CBR600Fi, Kawasaki ER5

[Copycat73]

post pic. of suppressor cap with rubber seal clearly in jpg.?
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[chappy]

It was running fine as i just done 20 miles down the a2 at 50 mph on and off . Petrol was low nearly on red then what i remember for split second engine sounded slightly diffrent and looses all power and glides to a stop on hard shoulder .
So just thought out of petrol as my petrol pipe come off before and was nearly the same so engine noise could of been slight bogging ..

Dont mean to sound stupid but what is the suppressor cap with rubber
seal what am i looking for ? Thanks

[Copycat73]

one of these.. sits on top of the spark plug.

some times they split and get wet which causes the bike to stop.
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[chappy]

Im having trouble uploading pics but thinking you must of been on about the ht cap before you posted pic i had a look all seams to be well undone no cracks or wet.
Took fuel pipe off no fuel coming out then turned key shot out off pump so pipes working .
Went back to spark plug to look at spark and plug is rusty at the nut where rubber was not down and seams to be sparking two places one at tip one at nut when rested against engine is this norm ?
Will pop in halfords night get new plug
.i did mix a tiny amount of old fuel out can with fresh fuel the day before i broke down but bike made the 30 mile trip that night and 20 miles before running low and cutting out on the day could this be anything

[john24ssj]

In theory you shouldn't have spark in two places, it should only be at the tip
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Bikes: Honda CBR600Fi, Kawasaki ER5

[Robby]

If you have a spark, I wouldn't be looking any harder at the electrics.

It's been wet recently. The fuel level was low. Water in the fuel is a possibility.

Turn the fuel off at the tank. Hold a cup or similar under the carb, then open the drain screw on the bottom of the float bowl. Drain the carb into the cup - it will fill a cup to about half way. Close the drain screw.

If there is any water in the fuel, it will show as beads of liquid rolling around in the bottom of the cup. If you do find water, drain the tank on reserve to get the water out, put the fuel (but not the water) back in.

[Copycat73]

[chappy]

Its a 60 plate so no carb Fuel injecter so cant drain the carb .
Ok i will get a cap as well if halfords do them .
Gona put fresh petrol in night as well as the stuff in tank now been in jerry can few months so got to try drain tank
If not petrol or spark plug or cap not sure tried everything i could think off this bike have nerver let me down in great condition not many miles till now first speedo drive pack up friday now this happens monday . .

[Copycat73]

[chappy]

hi there just an update , i drained the tank took for ever turning on then off then on using the fuel pump to drain .
put 5 pound new petrol in put a new spark plug in and fitted a new ht cap charged the battery then attempted to start it but still know luck.

someone said on hear because it was raining when it cut out spray all the wire's with wd40 done that and still wont start Evan bumping.
tried everything and know luck ,could the engine have blown up fort if that case back wheel would of locked plus these ybr are ment to be great engine wise i had a rs 125 before looked after that for 2 years and that never blown on me so surly not this doing 50ish in 6th gear.
thanks any advice get this thing moving

[Copycat73]

check the fuses.. wiring for loose connections or frayed wires.
____________________
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[chappy]

Just before christmas i sar a 150 top end kit on ebay new piston 'head etc so i bought it just in case . Over the holidays i removed old top end and the piston was all scuffed up with a small crack so found the problem

oiled it all and fitted new top end New oil put back togerver and the bloody thing still wont start . Did i need to adjust the valves at all coz i did not touch them . Could i have fitted the timiming chain wrong as i lined the crank to the line in eye hole but when i tightend the cog for the chain it tund round a few times but the line was still on in the eye hole so did not think nothing of it .. wont bump ether . Gona pop halfords for some easy start

[WD Forte]

Easy start?
Seriously?
do people still use that?
That stuff's basically ether as I recall

It might help on an indirect injection deisel lump
with knackered glow plugs, but it won't fix a poorly petrol engine.
You're grasping at straws by the sound if it.
If the bike wont start normally it has problem
find and fix the problem.
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bikers smell of wee

[YBR Ric]

So would it be possible (without photo's ) to conclude that the original loss of power may have been a result of piston seizure?

You're saying you've replaced the original damaged piston and barrel with a 150cc big bore kit and since doing so the bike wont start.

It's possible during reassembly that the valve timing may have been done incorrectly, but that can easily be verified by carefully checking everything as it is now against what it should be in the manual; but what in addition to the big bore kit, have you fitted to the bike to get the 125 fuel injection system to supply the correct fueling for the bigger engine?

[chappy]

Yeah the piston was gon quite bad had chunks out of it and a crack so it had a seizure. . Iv added nothing els to it i was under the understanding that everything came with it needed . Piston cyilinda . Pin clips gasgets etc . So wot els was needed as its not a carb model so no up jetting . .

Yeah i think it must be the timing myself not quite sure how to solve tho also found out battery gon after being on charge all night and not holding .

[........................]

Have you ever checked the oil level?

Sounds like you've seized it and killed it. New engine.

[P.]