150mph slight prob!

[Gemini]

hi guys,

right to start off my bike runs very well, very slight flatspot at around 6k revs but you aint ever gonna get them all ironed out!

my bike is a giraffe for suffering with carb icing too, so i have a new carb heater pipe filter on order just incase the original is blocked

so back to the prob, on sat i got on the Mway and it was clear so i thought i would open her up, i got to 150mph and lost my bottle but i did hold it at 150 for a good 15-20secs, when i backed off then got back on it the bike hesitated and felt just like it does when it suffers carb icing!

which is odd as it was getting cool but not freezing cold.

as soon as i coasted a bit it was fine again.

im wondering if at high speeds the air gets so cold that it could cause slight carb icing?

this is the first time i have noticed this as its the first time i have taken it much over 130mph

would b interested in your views, i hear kwaks can have these sorts of probs due to their ram air

gem

[Wabby]

I have same thing at a tonne going into a corner (on private racetrack, of course) when I back off and then try getting back on the throttle.

If I turn petrol to RES it doesnt do it - Only when fuel is on ON.

Still trying to find the cause....

[Gemini]

if u do then let me know, but tbh i dont plan on doing that sort of speed again

so wont cause me a prob

gem

[Scott221]

if u do then let me know, but tbh i dont plan on doing that sort of speed again

Lol. Don't lie.

Could be anything tbh. Carb icing, dodgey fuel, fuel pump... First time its ever happend?

[masterofinsanity]

i would think its more a fuel starvation thing so may be worth looking at upgrading the fuel pump?

[zimm]

i would think its more a fuel starvation thing so may be worth looking at upgrading the fuel pump?

+1 , but i'd be looing at the fuel filter and pipe routing first

[Gemini]

if the fuel pump is working...which it obviously is as the bike runs, shouldnt it have been designed for the bike?

cant see how it needs upgrading

first time its happend as first time i have ridden at that speed but doubt i will be doing it again as i cant afford to lose my license

gem

[masterofinsanity]

if the fuel pump is working...which it obviously is as the bike runs, shouldnt it have been designed for the bike?

cant see how it needs upgrading

first time its happend as first time i have ridden at that speed but doubt i will be doing it again as i cant afford to lose my license

gem

your fuel pump could be tired mate? and when your travelling at those sort of speeds needs to give a good constant flow which a tired pump may be struggling with hence the fuel starvation, maybe fitting one off a later zx9 zx10 would help??

and if you wanna keep your licence not a good idea to post on a public forum that police could use as evidence?

[tk400]

sshhh......echelon !!!!

[Gemini]

i meant 15mph the zero is a typo

gem

[masterofinsanity]

that answers your question then mate.....you need to move into 2nd gear

[diesel]

zxr400 website. 150 mph. methinks u tell too many porkies. either that or get to the zx7r forums


sounds like fuel starvation. is there a kink in the fuel line?

[Jeppo]

Pretty gem does ride a 7r...

meant 15mph the zero is a typo

What you worried about losing your license for then??

[Gemini]

will check the line when i take tank off this wkend

gem

[dendrite]

Had that very problem on my zxr750 and it was the in line fuel filter