Tea bag filter

[Mick_J]

What are the symptoms of a clogged teabag filter?

I went out for a spin today and everything was fine until I hit a private road and wound it up to over 5k in top.  When I slowed down the bike cut out and was a bugger to start, I only got home by turning up the tick over to 1800 revs which stopped it cutting out all the time.

[Mister Fishfinger]

Don't know about the tebag, but I applaud you sir for hitting 5K in top on a "private road". It would be terrible to think that a forum member might accidentally break the law on a public road.

[seth]

A blocked teabag is normally spotted by a miss-fire and or rough running/iratic tickover. it'll take you 20 mins to get the pump out and check it .
Hopefully it's nothing to serious 

[KiwiCol]

I wouldn't think it's a blocked filter Mick. If it were, it would show when you need more juice, 5k needs more fuel than 1100 idle.  Reckon one of your plugs is shot, needs the extra idle rpm to compensate.
You got iridium in there from memory, yeah?  I recall some folk have had issues with them melting pistons - dunno why though.

I'll be interested to see how this pans out.   
See how she starts & runs in the morning once everything has cooled right off. Could be a bit carbon'd up? & the wee high speed burst has made it glow hot - causing rough idling.

[Mick_J]

The reason I joined the old forum in the first place was that the bike ran like shit, didn't tick over very well and died at junctions etc.  Cured it with new plugs (iridium) and everything has been okay for over a year, until now but it's a bit different as it feels like fuel starvation which is why I went for the teabag, I will check it out when it's cold and see what happens.

[Mister Fishfinger]

If I remember right, a few people on here have recommended ditching the Iridium plugs and going for standard. Worth a try, it will only cost a few quid to find out.

[KiwiCol]

It's an odd one for sure, I can't understand how it can be starving for fuel at idle yet have enough to rev high.

You haven't had the tank off recently have you?  Reason I ask is the fuel hose from the bottom of the tank to the fuel pump can get kinked / squashed occasionally, thus restricting fuel to the pump. (I've done that) But, it affected higher throttle openings, not idle.

[Basil Brush]

Stale fuel?

[Mick_J]

It's an odd one for sure, I can't understand how it can be starving for fuel at idle yet have enough to rev high.

You haven't had the tank off recently have you?  Reason I ask is the fuel hose from the bottom of the tank to the fuel pump can get kinked / squashed occasionally, thus restricting fuel to the pump. (I've done that) But, it affected higher throttle openings, not idle.

It only happened immediately after the high speed run which is why I asked the question, more fuel sucked into the teabag clogging it up.  Haven't had the tank off for over a year.

[Andre]

Spark plugs and fuel have been mentioned. I would also check plug cap, throttle valve sync, and vacuum leak.

[Mick_J]

Went out on it today and there was no problem, ran fine, no coughs or hiccups.

[seth]

Very strange but glad it's all ok

[Mick_J]

Yes, it's a puzzle.  Still want to get to the bottom of it though as I don't want it to happen when I am miles from home.  I will keep on looking, might try standard plugs first.

[gsxbarmy]

Just out of interest - how much fuel was in your tank at the time? If very low, it could be that the symptoms you had were as a result of scavenging, as where the pick up for fuel is towards the middle/front of the tank, under hard acceleration or if going up a steep hill, fuel goes towards the rear of the tank, so if low, can cause scavenging and thus a bit of overheating as the engine runs slightly weak due to slight fuel starvation.

If it was this and your plugs got a little too hot as a result, that could explain why it did what it did then and runs ok now.

[Blubber]

Maybe the tank vent was (partially) frozen?

With that vent not working properly,  you can create a vacuum in the tank, causing a fuel delivery problem.