Full Throttle problems ?

X9-rider · Trackday Trickster Joined: 01 May 2009 Karma :

Hi

When riding the bike at full Throttle, be flat out or accelrating from stand still, if Throttle is fully open the bike shudders and feels like its about to cut out, and lose power, but if i leave it at half Throttle everthing is fine regardless of down hill, up hill low speed or high speed, it appears the bike is having problems with the Throttle been full open.

Any ideas ?

Nixon · Brolly Dolly Joined: 23 Jun 2007 Karma :

I have just checked with the met office, but I still don't understand what "full throtal weather" is, is it worse than snow and ice?

Relentless · Banned Joined: 27 Nov 2010 Karma :

Full throatal .. is deep intrusive blowys ... how that equates to bike issues i don't know .. !! Rolling Eyes

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nsr_J22_FOXEYE · Scooby Slapper Joined: 16 Jun 2010 Karma :

Check you air filter is fully connected with no extra way for air to get in other than standard, If that is ok check your exhaust is fully connected with no gas escaping before the end can
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chris-red · Have you considered a TDM? Joined: 21 Sep 2005 Karma :

dextersaurus · World Chat Champion Joined: 26 Mar 2009 Karma :

See that wee button under the box you typed in?

Yeah, that one! that one that says 'spell check'.

Will save you looking like a knob.

As already said, sounds like it's running rich/lean.

Give that carb some lovin'

X9-rider · Trackday Trickster Joined: 01 May 2009 Karma :

sorry about my start post forgive me i'm dylecicx and been late i didnt run the post via the softwere i normally run it via.

anyways i check exhaust all is good, and Air filter is tight and good and air filter its self is clean inside.

Mite do as suggested in clean the carb out, but anything els ?

N cee thirty · Banned Joined: 31 Jan 2010 Karma :

lmao i'm dyslexic and i can spell alot better than you.no excuse
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Jewlio Iglesias wrote: I actually did vote BNP once

Acemastr · World Chat Champion Joined: 01 Oct 2008 Karma :

Dyslexia... a fake 'disorder' created to make stupid people feel better.
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dextersaurus · World Chat Champion Joined: 26 Mar 2009 Karma :

nsr_J22_FOXEYE · Scooby Slapper Joined: 16 Jun 2010 Karma :

when did it start happening? did you change anything before hand? how long are you letting her warm up for? and have you got a few pound to get a new spark plug?
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hornetmike · World Chat Champion Joined: 06 May 2008 Karma :

what bike is it ?
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Ol · World Chat Champion Joined: 07 Aug 2009 Karma :

Last i remember he was on a CG and had ditched the glorified peds ???

as above, sounds like a fuelling issue to me, check fuel filters clean maybe?
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dextersaurus · World Chat Champion Joined: 26 Mar 2009 Karma :

Well if it's a CG, that's simple.

Had exactly the same when i bought mine, was due to it running too rich, and flooding it/wetting the plug rather than firing.

There's a wee screw under the carb you can get to if you use a small screwdriver.

Use that to change the fuel/air mix, and get it running properly.

Dunc

N cee thirty · Banned Joined: 31 Jan 2010 Karma :

2001 Piaggio X9 125

kinda says in his sig
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'00 Aprilia RS50 > '92 Honda CG > '99 Yamaha Fazer > '91 Yamaha RXS > '79 Suzuki X5 > 01' Honda Cg > 07' Honda Cg > 82' Kawasaki Z200 > suzuki gsxr 400 gk73a > honda vfr 400 NC30 Mod 2 Passed 09/06/2011

Jewlio Iglesias wrote: I actually did vote BNP once

X9-rider · Trackday Trickster Joined: 01 May 2009 Karma :

Bike i own is in my Signature.

check the mixture is right....well i am not quite sure how to do it on a Piaggio engine.

The bike has a auto-choke, its at 2,000rpm then atter 30 secs the auto choke comes off and drops to 1,400rpm and then i get on a ride off.

So its fully warmed up, i was at snakes pass yesterday and it tempoary stoped shuddering and once off the snakes pass ( -10 ) and on to the dule carriagway it did 75mph with out struggling.

Spark plug gap checked and is fine and is in good condtion, not white not black but a nice dry light brown.

checked the belt, that looks heathy, and the oil is a nice clear with brown tint but feels weak, but dont see how that could effect top speed and shuddering.

As for Acemastr, Middle Finger

Fisty · Super Spammer Joined: 11 Apr 2007 Karma :

The shuddering is to stop you falling asleep on it. Again.
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X9-rider · Trackday Trickster Joined: 01 May 2009 Karma :

Trust me that will never happen again Laughing

Learn the hard way first time and never again Smile

scince last post i been thinking....... Could the Rollers have anything to do with this shuddering?

Codemonkey · Crazy Courier Joined: 18 Oct 2009 Karma :

Could it be fuel starvation ? Maybe the breather in the fuel filler is blocked with ice. Try opening the filler cap to see if the problem goes away.

X9-rider · Trackday Trickster Joined: 01 May 2009 Karma :

fuel starvation is one feeling i would say it is. But the fule pump looks good.

the breather is under the Tank hidden away, its nice to ride but a shit of a heap to work on, as everything is enclosed.

after reading comments i would conclude ither its :

Rollers have Flat spots
fuel starvation
running too rich
mixture is not right

Got an impact wench mite check rollers.

Stalk · Brolly Dolly Joined: 26 Dec 2005 Karma :

It's not that strange problem known as carb iceing is it? Just a suggestion as I have no direct experiance of this. (In other words' it's never happened to me)

Cheers
Stalk.

X9-rider · Trackday Trickster Joined: 01 May 2009 Karma :

carb icing ....someone explain that one, i heard in a review of the the 2001 X9 that i ride suffers from carb icing.

All 2001 Piaggio X9s had the carb icing issue till 2004 models where it was solved i belive.

X9-rider · Trackday Trickster Joined: 01 May 2009 Karma :

just googled carb icing, no it cant be that as it was doing this in summer weather conditions.

Noxious89123 · World Chat Champion Joined: 10 Jun 2007 Karma :

Carb icing usually causes problems when you stop after a long time with the throttle open, and the bike won't idle. So it doesn't sound like it'd be that anyway.
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warped one · Banned Joined: 25 Dec 2007 Karma :

Check your mixture or balance.

If you run a twin (sorry not read whole thread) then this might help.
https://www.youtube.com/watch?v=0nKaGEMLZjs

All it is a piece of wood with a length of tube going to the carbs, filled with oil. Holding the wood level should give a level reading on the tube. Start the bike and then see which tube the oil goes up. The adjust as appropriate.
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