Slow idle at 40-70C and sometimes poor acceleration from 0 ?

[ko5i]

Hi all.
Recently i noticed that my bikes idle is ok when its LOW'' but when it hits about 40C the idle is at around 1000 where it should be at 1300RPM.
When i rev it up [not red line just give it a gas on clutch to for example 4k rpm] then it barely keeps going as it goes to 1000 maybe slightly under that and catches up.
Its happening up to about 70C and after is fine all alright idle is 1250ish all is good only happens at 40-70 but if i remember before it didnt do such thing.

Also another problem i noticed recently is that when i try to accelerate fast not saying red line and all but just to speed up quickly then it seems to be [i dont know how to describe it] bogging ? dying ? clogging ? the bike sounds all good and then you accelerate and it gets more silent not much power but still accelerates but then after sec or so it gets back to normal and accelerates good..

Seems like maybe air filter is dirty or something ? what do you guys think about it ?


Thanks !

[jaffa90]

Go on give us a clue to which machine your talking?

[pompousporcup...]

[Nobby the Bastard]

How are you measuring the temperature of the engine?

You'd normally expect it to be running more than 100c.
____________________
trevor saxe-coburg-gotha:"Remember this simple rule - scooters are for men who like to feel the breeze on their huge, flapping cunt lips."
Sprint ST 1050

[ko5i]

yes sorry the bike is xj6 2013

And the temperature just shows on dash LOW means its below 40C and when LOW is gone then it starts showing 40c on LOW temperature the idle is good about 1300/1400 depends how cold is it But from 40-70 C the idle is low about 1000 and you can hear the bike isnt really running good sounds like jumping idle but it doesnt jump that much as it sounds jumps around 1000-1100 but when you give throttle to 1300 then it runs good
after 70C it runs all good idle speed steady

[jaffa90]

Your bike is fuel injected with many sensors telling the brain (ecu) what to do, you have a weak mixture when it`s bogging and the idle speed should be 1,000 to 1,050 and no more when warmed up.
It could be contaminated fuel so try another fuel station first using super unleaded and keep away from supermarket crap.

[ko5i]

i always fill up with shell vpower one but i think recently i used bp one if im not mistaking but getting to idle speed even in manual says it should be 1200-1300 when idling and from what i remember it happened about the times when it was super cold freezing that the idle after 40c is 1000 and when you pull throttle a bit it and let it go down [like small quick rev up to let say 4k rpm then it drops to 1k rpm and nearly dies but after 70c its all good so this is what makes me wonder why is that

[P.]

Stop wasting cash with V power and just use regular.

"Supermarket crap" is all I've ever used. Just have a quick service, check your plugs and go give the bike a good razz down the road.

[jaffa90]

"Supermarket crap" is old fuel without additives and is crap for storing without use like bikes / lawnmowers e.c.t. Also contains max Ethanol content.
Your bike has a faulty sensor/s giving varying idle speed.
I`ve umpteen bikes with carbs / fuel injection and cars as well and none of them had an idle speed more than 1,000rpm.

[iooi]

[Nobby the Bastard]

[P.]

My bikes warm idle is 1250... Cold it's 1750 and works its way down gradually. The triple is about 2k and works down to like... 1100.

Sounds like you speak anus.

[Nobby the Bastard]

[jaffa90]

There`s no need to have engines idling at more than 1,000rpm when warmed up, why 1100rpm or 1250rpm?
The faster the idle and more crunch you have engaging first gear like having the choke on.
Carry on storing / using supermarket crap and i`ll buy the non starters / runners the year after.

[iooi]

[quote="jaffa90"
Carry on storing / using supermarket crap and i`ll buy the non starters / runners the year after.[/quote]

You will have a long wait then.. My current bike is 10 years old and I have had it for 7 so far with no issues
____________________
Just because my bike was A DIVVY, does not mean i am......

[P.]

The fuel is fine.

My bike hasn't been touched and runs at the speed. I've not even considered looking for any form of adjustment and it runs fine. I have no real crunch.

[ko5i]

You guys misunderstand me mostly
I said that ''my bikes idle is ok when its LOW'' but when it hits about 40C the idle is at around 1000 where it should be at 1300RPM.''
that means when its LOW it works it self up automatically i think 1500-1600ish rpm but as soon as it hits about 43C its drops to 1000rpms and barely idle when i rev up a bit, and its happening up to about 70C and when its properly warmed up after 70C the idle is alright.

I thought it might be air filter or something i dont know i will test it tomorrow maybe see in detail.
i will try to ignore as one said since it doesnt stall leave it.
but in case will just check air filter when i will be low on fuel so tank would be lighter to lift

[redeem ouzzer]

If it's crunching engaging gear on fast idle / choke then it suggests the clutch needs attention. I'm about to rebuild the clutch on my 1100 for this very reason. It's a clutch fault, nothing to do with idle speed.
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Be a REAL MAN!

[jaffa90]

[redeem ouzzer]

[jaffa90]

For Nobby & Paddy, Just started the fuel injected bike up after 4 weeks, pic of tacho on tickover / idle.

[P.]

Unsure why you are showing me, what engine is in there....

[jaffa90]

Engine, makes no difference i`ve had plenty, you look to have a few bikes why are yours on fast idle?

[P.]

[Monkeywrenche...]