FFS! my new aprilia rs125 has died!

[superslick]

Hi guys

Right, last Monday i bought an aprilia rs125 gp-1 2004 from my local dealer and iv warmed it up every single day and have finally had time to get out on it today, so..

i warmed it up to around 60', set off slowly, went down a steep hill keeping in a high gear, came to the bottom of the hill and started driving up another steep hill, it started bogging down abit so i changed down a gear and was on my way up the hill when the bike cut out, cut in, then died. i pulled over and tried numerous times to start it again on the electric start and no luck, on about the 3rd attempt it backfired. I let it sit for about 3 mins then pushed it down the hill and tried to bump it and it seemed to be compressing properly but it just wouldn't start at all.

So, pushed it home, took the spark plug out and it was wet so i dried it off, checked for spark (strong spark) put it back in and tried to start it but after numerous attempts it would not start and now has a flat battery.

I though it could have blown a hole in the piston but it does sound to be compressing and there is no blowing when trying to start it, and it only backfired the once.

Does anyone know what might be wrong with it?? it had an engine rebuild around 320 miles ago and has always started up fine. Its not the end of the world as i have another bike to get around and the RS is still covered under the used bikes warranty but its so damn annoying!

And yes i have checked the fuel is switched on etc! lol

Thanks, Jon
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aprillia rs125 gp-1 2004

[doggone]

It almost sounds like the choke was left on, assume its not auto ?
- if so maybe faulty.

Why are you so fussed about warming it up?
Just get on, start it and ride off seconds later.

Also, there's no point starting it daily if you aren't going out; the first minutes after a cold start are when 90% of engine wear occurs - so you're just wearing your engine out about 10 times quicker.

[superslick]

Manual choke and id warmed it up and put the choke off before i was riding it.
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aprillia rs125 gp-1 2004

[mr jamez]

Its a two stroke, try a new plug.

Did you just let it sit there and get up to temperature? bad idea on a two stroke as it just oils up the plug. Start the bike and ride it, when it is up to temperature nail the fucker
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NSR 125F > BROS 400 > NC30 > BROS 400 > Trumpet S4 > '97 VFR 750

[County]

[superslick]

Right, typed below is the full list of parts on the receipt for the work done.

CHECK - START PISTON SOUNDS NOISY, BATTERY FLAT. CHECK KILL SWITCH + GET RUNNING

APRILIA OIL SEAL
APRILIA OIL SEAL
NSK BEARING 6005
NSK BEARING 6302
OIL SEAL 22 X 12 X 7
APRILIA NUT RS125
APRILIA RS125 GASKET 122 ENGINE
NSK BEARING 6206
APRILIA 125 P/KIT
CON ROD KIT RS125 ROTAX BIG END KIT
APRILIA RS125 GASKET-CLUTCH
APRILIA RX/RS 125 PLATE - CLUTCH
APRILIA RX/RS 125 SCREW, ADJU
NUT (1KT) APRILIA 8120531

PARTS - £232.37

LABOUR - £150

carried out at raceways in Fleetwood.
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aprillia rs125 gp-1 2004

[5v3d3b0]

My rs 125 hasn't skipped a beat until now.
But that's cause I ran out of oil and overtightened my chain.
Money spent so far:
Tool box - 50 euros
Paddock stand - 30 euros
Cylinder + Gasket Kit + Bobbins + Transport - 300 euros
In total SO FAR before dismantling the bottom end I've already spent basically 400 euros, which is abuot 320 quid at the moment...
This week I'll see what's broken in the transmission.

[Wave2k]

May be a stupid question, but is there petrol in it, is it on reserve or off ?
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Ducati 1299 Panigale
2009 Corvette C6 z51
RS125->CBR400->RXS100->GSXR750K2->Ducati749S->CBR600RR5->TL1000R->DRz400->RSVR1000->Honda VTR SP1->CBR400->GSXR1000K6->Honda H100->CBR600RR3->Ducati1299

[superslick]

yeah nearly a full tank and its turned on, and iv tried starting it on reserve also.



f*cking thing
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aprillia rs125 gp-1 2004

[Wafer_Thin_Ham]

Have you checked the fuel is getting through ok. Not trapped or kinked breather hoses/fuel lines?
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My Flickr

[superslick]

how can i check the fueling and see that its flowing properly without taking the whole thing to bits?
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aprillia rs125 gp-1 2004

[Wafer_Thin_Ham]

[tutton]

If youve got warrenty,
get it fixed under that.

Check whether its parts and labour or just labour.
if its both it should cost you nothing.
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Past: '05 Peugeot XPS '99 Aprillia RS125 '94 FZR600R
Current: '02 ZX636 A1P '51 CCM R30

[superslick]

doesn't have a kick start on bud, would an attempted bump start with throttle full open worK?
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aprillia rs125 gp-1 2004

[Wafer_Thin_Ham]

[tutton]

Dont full throttle bump start thats asking for trouble lmao!
unless u like basically either razzing 1st and redlining or throwing your bike to the floor.

bump start ye but dont need full throttle as surely fuel would still be working with the pilot jet as well ad the main (throttle)
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Past: '05 Peugeot XPS '99 Aprillia RS125 '94 FZR600R
Current: '02 ZX636 A1P '51 CCM R30

[superslick]

[tutton]

Well theres the check list for igniton.

Fuel
Air
Spark
Compression

Easy enough to check if your getting most of them id say,
but by all means try bumping it, my 50 bumps as long as the ignition is in the on position. For some reason it sounds to me like a blocked fuel line, either from crap that got sucked when you tilted the tank up like that or just residual petrol shit.
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Past: '05 Peugeot XPS '99 Aprillia RS125 '94 FZR600R
Current: '02 ZX636 A1P '51 CCM R30

[superslick]

Going to tinker with it now and try and bump it.

back in 10
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aprillia rs125 gp-1 2004

[Wafer_Thin_Ham]

*waits for thread entitled "how much for RS125 plastics?" to be started*
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My Flickr

[tutton]

Laughing out loud.
Would post the aprillia helpline but cant find the number
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Past: '05 Peugeot XPS '99 Aprillia RS125 '94 FZR600R
Current: '02 ZX636 A1P '51 CCM R30

[superslick]

grr still no luck, tried to bump it with throttle on and the plug was wet when i took it out, dried it with hair dryer and put it back in but still no luck, and the battery is completely flat now.

how extremely annoying! its going to be sent back to the dealer now and repaired under warranty so its probably going to be a month before i see it again
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aprillia rs125 gp-1 2004

[tutton]

IF theres fuel on the plug,
its either compression or plugs dead.
if its a stroker most likely plugs dead.

Cant remember how to test the plug spark colour but sumone will explain.
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Past: '05 Peugeot XPS '99 Aprillia RS125 '94 FZR600R
Current: '02 ZX636 A1P '51 CCM R30

[superslick]

it was sparking before but now the batterys completely dead theres no spark at all.

I think it must be something to do with compression or fuel as it died as i was riding it.
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aprillia rs125 gp-1 2004

[superslick]

oh and the plugs a dark brown colour which is normally spot on with bikes.

it was weird when i was riding it because when i went up the hill i was in too higher gear and it started to bog down and seemed like it misfired, so i changed down and it drove for 2-3 seconds then cut in, then out, then died completely and it was like the ignition had been turned off. so i pulled over and tired starting it then on the 3rd attempt the exhaust backfired so it must have still had a spark.

But as i say, the plug is getting wet , its got a spark (well, did untill i ran the battery flat), and SEEMS to have compression but i cant be 100% sure unless i take the cylinder head off which i really cant be arsed doing at 8:57 on a sunday =[
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aprillia rs125 gp-1 2004