ZXR 400 + Ultimate Unleaded Problem..

[MAR5H7]

So basically, Iv had my bike up and running for a while and had no problems until today

The other day, muggins here bought ultimate unleaded instead of normal unleaded D: completely did not mean to but was not looking at what I was doing, next second, its too late
anyway
The final bit of unleaded in my tank burnt away and then the ultimate hit....
Bike gave a deep grunt sound, worse than normal
became less responsive and very unpredictable with the slightest throttle movement...
then just cuts out, will not idle :S

I did do an oil change today and oil filter as well but I was riding around my town and to the turpin which added up to about 12 miles?
and it was running better than ever, and the fuel mark was where about the ultimate started going in

Any idea on this matter?????
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Ex: CBR 125 R 06', ZXR 400 96' (RIP), Bandit 650 06'
Owned: SRAD 600 97'
Current: YZF Thundercat 600 96'

[mysterious_rider]

got forced to run my gs500 on that high octane crap. Been running like a bag o shite ever since. Diluted it with £6 worth of normal stuff today though.

[Polarbear]

sorry, putting the 'better' unleaded in it wont make a difference. You really won't notice it.

However, with the running out of fuel stocks shit, I wonder if you have filled up when the tanks are at the bottom and got crap/water or something in your fuel.
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Triumph Trophy Launch Edition

[Easter Bunny]

Ran my pan on ultimate for a week to see if there was any improvement worth the extra cost, noticed no difference what so ever, no difference in running poor or good, no improved mpg waste of money in a bike!

Its unlikely to be the cause itself more likely as has been said some thing else.
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The light at the end of the tunnel is an oncoming train!

[MAR5H7]

I really dont know :/ it just sorta....happened while riding
Was fine one minute, no change, the next, BAM! O.O

Guna open her up 2moro, have a look at the carbs, mate recons shes over fueling and flooding the engine out

I dont know tbh :/Just wana keep my pride and joy running how she should <3
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Ex: CBR 125 R 06', ZXR 400 96' (RIP), Bandit 650 06'
Owned: SRAD 600 97'
Current: YZF Thundercat 600 96'

[Scythe]

It'll just be because it's a higher octane.

Higher octane = more compression required to detonate.

If your bike can't give it enough compression then ignition will be sluggish.


Don't open it up, just go fill up with standard unleaded to dilute it, it'll be gone fairly soon and should be back to normal.
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2009 Yamaha YBR125 -> 2000 SV650S -> 2005 Kawasaki ZX6R 636

[JoeDougieDoug...]

Sorry to hear that mate! As some of the others have said, dilute it with some regular unleaded, if that doesn't work then drain the tank?
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CBT Passed - 22 / 10 / 11 >> Theory Passed - 16 / 02 / 2012 >> Mod 1 Passed - 07 / 03 / 2012 >> Mod 2 Passed - 18 / 05 / 2012.

[Polarbear]

Thats utter shite, you won't notice the difference between 95 & 97 octane. You might get more mpg, some have and some haven't, but honestly, your bike won't fell any different.

I work for Shell and not as a petrol pump attendant!
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Triumph Trophy Launch Edition

[cloric_tzr]

i beg to differ, i started using super duper unleaded in my tzr, and she run much crisper, less of a splutter before the power valve kicked in smoother acceleration and better fuel consumption, easyer to start less smoke on start up.

i only really noticed when i went back to normal unleaded because i was strapped for cash and wanted to get just that little bit more.

do apreciate its a 2 stroke which may be more suseptable to diffrent octane ratings
____________________
i dumped my girlfriend the other day! she wouldnt act out one of my fantasy's. all i wanted her to do was come home from work, catch me fucking her sister and join in!!! miserable bitch!
My wifes so ugly, the only thing that goes down on her
Is the internet connection.

[Polarbear]

[cloric_tzr]

just out of intrest what do u do at shell?
____________________
i dumped my girlfriend the other day! she wouldnt act out one of my fantasy's. all i wanted her to do was come home from work, catch me fucking her sister and join in!!! miserable bitch!
My wifes so ugly, the only thing that goes down on her
Is the internet connection.

[Polarbear]

I'm a marine and cryogenics engineer, I freeze dead people.

I don't really, I'm involved with the transportation of liquified natural gas in ships.
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Triumph Trophy Launch Edition

[junglejim]

[CaNsA]

TBH i can tell the difference between the cheap stuff and the posh stuff.

The zxr feels crisper, starts easier, i get about 10>20 extra miles from a full tank before i hit reserve.

It sounds a bit healthier too.

The posh stuff wouldnt have buggered your bike. This is the 2nd zxr I've owned, and both have run fine on the good stuff.

A bit of extra reading for the zxr owners

https://www.zxrworld.co.uk/zxr400oc/viewtopic.php?f=57&t=11425
https://www.zxrworld.co.uk/zxr400oc/viewtopic.php?f=1&t=12760

[mysterious_rider]

[Kingstondavo]

My bike runs like total crap on premium petrol (optimax, etc) Only put it in once and never again.

Then again it also runs crappy when it is too cold, on Thursdays, and whenever the hell it feels like it...
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Current Ride - 2010 Hornet 600

[pits]

Ultimate as in BP ultimate? I think it is more down to the fact no one ever buys that shit, I had to run my bike on it last week, ran like shit, went back to Vpower and it runs lovely.

And my bike is set up to run on V power or high octane.

Also you can feel the difference in somethings, my Mitsi I had, if you ran it on 95 it would have a lot more knock and would turn a lot of settings down to compensate, lack of acceleration.


Vehicle has to be set up to run on higher octane to gain any advantage, but the advantage wont be noticed by some.
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Stinkwheel: You have no right to free speech
00:32:08 Blau Zedong: yes, i am a massive CB400 fan and collector
00:33:00 Blau Zedong: the CB400 is my favourite road bike

[yambabe]

[RhynoCZ]

I tried the STP Fuel injector and carburettor cleaner ones in my GPz550 and it really had positive influence on the bike. Engine ran smoother, starts were better, engine temp was lower and the engine gave its power more ''cultivated''.

Well it was a 23 years old bike though, but I think that it's cheaper way with real effect on a bike instead of the premium, ultimate, V-power, whatever cool petrol.
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'87 Honda XBR 500, '96 Kawasaki ZX7R P1, '90 Honda CB-1, '88 Kawasaki GPz550, MZ 150 ETZ
'95 Mercedes-Benz w202 C200 CGI, '98 Mercedes-Benz w210 E200 Kompressor

[MAR5H7]

right
well Iv read all the posts, cheers for the heads up guys

Tbh with you, think I know what the mixture was on about

It buggered up on me the other day, started up fine after 15 mins, my mate had a similar problem on his old bike where the engine flooded over and became unresponsive and eventually stalled
Iv put it down to my carbs, as they still need proper balancing (yet to find out how/where to)

The ultimate unleaded I put in, even though has had misfortune on this account, actually put my mileage on a full tank from around 93 miles to approx 115 and still had around £2-£3 in the tank
Ill get my carbs sorted ASAP! as I know that unbalanced carbs does nothing good at all! and then maybe give it another go as I would love to see what its like
and CaNsA, cheers for the links man
I read them and I think it depends on the ZXR tbh, they are all very different over the years with mass alterations until the last few years, and depends on how its been treated

But cheers again for all the input guys (Y) very much appreciated
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Ex: CBR 125 R 06', ZXR 400 96' (RIP), Bandit 650 06'
Owned: SRAD 600 97'
Current: YZF Thundercat 600 96'

[CaNsA]

https://www.zxrworld.co.uk/zxr400/balancing.html

What are these mass changes you speak of?

1989 H1 model,1990 H2 model with no changes.

1991 L1 model introduced with new styling and a more powerful engine.colours:green/blue/white or metallic blue.

1992 L2 model introduced with no changes except colours red added.

1993 L3 model with Black frame and colour changes of ebony/purple/red & green/white/blue.

1994 L4 model with alloy coloured frame & colours ebony/violet or green/white/blue.

1995 L5 model with minor improvements to the engine & graphics on tailpiece changed from zxr400 to 400 only.colours of green/white/purple & ebony/purple/red available.

1996 L6 model with no changes.

1997 L7 model with no changes.

1998 L8 model colour change to black added.

1999 L9 model with greatly improved engine with different crank & head. colours of lime green/white or ebony/metallic eventide.

Only a very minor change between your zxr and mine....

[stonesie]

V-Power in the 125 = easier starting, with kickstart only that was a blessing. In the Daytona it makes bog all difference that i can feel and in the car it makes it feel very slightly more peppy and improves the mpg (it has twin lambda sensors and a knock sensor so it probably is adapting to the higher octane)

The SV had the biggest effect, no performance increase but it popped and crackled like mad on over-run, open can + the PAIR system made me grin like a loon

[iooi]

[1cyl]

since this thread:

https://www.bikechatforums.com/viewtopic.php?t=238212&start=0&postdays=0&postorder=asc&highlight=

I've been running vpower/bp ultimate etc in the SMC because i'm paranoid about my tank melting....

now you lot are saying its utter guff.

but bikes peen running fine. (and i've not had to change the engine managment switch to the "twigs and water" fuel setting?)
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Chase my Witch up, Catch my Snitch up.
The SMC | The Pit | Stable

[stonesie]

https://www.tr-register.co.uk/forums/index.php?showtopic=27613

Read that, there is Ethanol in V-Power

My Trumpet is also afflicted with plastic tank syndrome.