mkblade
|
 posted on 19/7/08 at 11:11 PM |
|
|
fireblade running/notrunning again
hi all
im back again still with carb probs,after the last issue ie flooding the plugs especailly number two, i got them sent off to andy at ab performance,he
washed them through and put them back together again with the same dyno jet kit ect.fitted the carbs on today connected the fuel line turned ign on
and waited to see if the fuel pump cut of after filling float bowles still clicking away after 10 mins ,now ive also got the added problem of fuel
p,,sing out of the plastic unions that feed each pair of carbs and ive got fuel pumping out of the overflow pipe/breather on carbs,the leaking problem
didnt have before so im wondering if the pump is up the creek or if the seals to the unions if it has any are damaged ?? cant speak to andy till
monday wondering if anyone eles can throw any light on it.
i wil try and post a few pics of the set up
all fireblade pump ect 919cc
thanks
simon.jpg)
|
|
|
|
|
mkblade
|
| posted on 19/7/08 at 11:17 PM |
|
|
pics
.jpg)
|
|
|
mkblade
|
| posted on 19/7/08 at 11:18 PM |
|
|
pic
.jpg)
|
|
|
mkblade
|
| posted on 19/7/08 at 11:22 PM |
|
|
i have put some red arrows to show where i think the fuel is coming from
cheers
simon.jpg)
|
|
|
mistergrumpy
|
| posted on 19/7/08 at 11:25 PM |
|
|
I'm not sure what you've checked already so forgive me if I'm teaching you to suck eggs but it sounds like a problem with the needle
float thing behind the fuel bowl floats.Sounds like they're not bottoming when/if the floats go up with the level of the fuel. Like a toilet
cistern really.
|
|
|
mkblade
|
| posted on 19/7/08 at 11:31 PM |
|
|
andy at ab performance has checked all the float valves and put the carbs through a ultra- sonic cleaning bath
|
|
|
austin man
|
| posted on 19/7/08 at 11:33 PM |
|
|
shouldnt ther be another couple of jubilee clips at the points you are showing > ??
|
|
|
Dusty
|
| posted on 20/7/08 at 12:00 AM |
|
|
To blow fuel out of those unions suggests pressure is a bit high. Agree they need clips. What pump are you using? Sounds like it's
overpressurising and if a bike pump it should shut off at quite low pressure.
|
|
|
cloudy
|
| posted on 20/7/08 at 12:20 AM |
|
|
Had this problem multiple times on cleaned carbs, it will be a tiny bit of debris pumped in with the fuel that will have blocked one of the floats and
flooded the air vents on a pair of carbs. All apart and clean then wash through fuel lines and try again... ( It would do this on mine even with 1psi
on the reg!)
James
[Edited on 20/7/08 by cloudy]
www.warnercars.com
|
|
|
worX
|
| posted on 20/7/08 at 07:00 AM |
|
|
I take it that the two jubilee clips that look loose are for the place where you have arrowed???
I also take it that the main fuel hose in that has a white bung, is done so temporarily while you had your carbs off???
I would also be willing to bet 5pence that the fuel isn't coming from the brown plastic unions that you have arrowed, but that it is coming from
some secondary brown plastic overflows just behind those ones you have arrowed. Of course without being there I couldn't know for sure...
Even though I'd usually believe Andy's work was pretty spot on, it can only be a couple of things at this IMO.
1. Your pump is pumping way over the 1.4psi limit that it takes to fill the bowls and close the needle/seat.
2. Your float bowl needle/seat still has minute particles of dirt in them.
At this stage, I would be tempted to do one of a few things - Change the pump, change the float bowl needles or change the carbs altogether.
Or all of the above 
Steve
|
|
|
Werner Van Loock
|
| posted on 20/7/08 at 08:06 AM |
|
|
It is a carb pump is it? ie Not injection pump as that runs at a much higher pressure and could explain all your problems.
As from a safety point, you're doing this outside right? And with a fire extinguisher at hand!!!
http://www.clubstylus.be
|
|
|
the_fbi
|
| posted on 20/7/08 at 09:25 AM |
|
|
Its worth checking that with the fuel line just blanked off, that the pump stops after building up the pressure in the line.
I'd also add, although I'm sure loads of people are using them without issue, that if your filters are the type which have the little
plastic barb'd adaptors screwed into the ends, that I had one of those (the adaptors) split and leak fuel. I'd suggest they are OK if
mounted well away from the vibrations of the engine, but mine was exactly where yours is.
|
|
|
LBMEFM
|
| posted on 20/7/08 at 10:14 AM |
|
|
Mine leaked at the point you show on the picture. I got new "O" rings for the plastic "tee" pieces from a Honda dealers and it
cured the problem. Look in the Haynes manual. The pump will continue to run all of the time the fuel can escape. You will also need clips for the
pipes shown.
Barry 
|
|
|
mkblade
|
| posted on 20/7/08 at 11:00 AM |
|
|
the lose jubilee clips are the ones that fit where the arrows are,the plastic joining peice is a reducer to get the blade fuel pipe and my new fuel
pipe to marry up together,pics were taken on strip down again.
yes i am using a early blade mechanical pump it does seem to me that its over pressurizing ,and andy did say he tested the carbs before he posted back
to me and they were working as they should be .
theres no evidence of crap in either filter and number two spark plug is also soaking wet and all i have done is turn the ignition on i have not even
cranked it over yet.
anyone got a spare blade/suitable pump they want to sell/i can borrow?
i might even rip out the whole fuel sydtem and start again,as ive got a plastic fuel tank with the feed pipe being at the top and i think most fuel
tanks ive looked at its always been at the bottom.
many thanks for advise
simon
|
|
|
worX
|
| posted on 20/7/08 at 11:54 AM |
|
|
The fuel tank feed being at the top isn't the best, but at the end of the day, loads of people have them this way and they work ok, so
Don't rush into changing it just yet.
I've got a standard R1 Pump that you could try if you want to?
Steve
|
|
|
mad-butcher
|
| posted on 20/7/08 at 07:37 PM |
|
|
OK I'm 5 nights into a 6 night shift, but in the first picture aren't they the vacuum gauge pipes you've got linked in pairs on my
blade and R1 these are blanked off and only used when setting up the carbs using 4 vacuum gauges. if they are open and linked in pairs surely it means
the carbs are going to be pinching extra air off each other 1 & 2, 3 & 4 ie running weaker.
Just an observation
tony
Tony
|
|
|
mkblade
|
| posted on 22/7/08 at 11:21 PM |
|
|
update
i blocked of the fuel line last nite turned the ign on pump clicking away and still clicking 10 mins later no fuel leaked im sure it should of cut off
(pump)
pump wired straigt to ign live (no relay)
ive attched two pics the pump has two pipes the one which is slightly restricted feeds the carbs and the other end comes from the tank .
have i connected it up right ??
thanks simon.jpg)
|
|
|
mkblade
|
| posted on 22/7/08 at 11:23 PM |
|
|
another pic.jpg)
|
|
|
.jpg)
