Electric fuel pump
 

Hi guys,

I have fitted an electric fuel pump to the DD bike.
Shouldn't the pump automatically cut off when the carbs are filled?

I have fuel pouring from the carbs if I leave the ignition on... :lol:

Cheers,

Tonio.

pump runs all the-time



are you sure you have replaced the two pipes on the "T" pieces between the carbs the correct way round? the fuel delivery is fitted to the larger of the two- the smaller one is the vent/overflow

have you attempted to reset the float higth's?

where have you placed the pump on the delivery circuit?

Dave I think Tonio is refering to his 600 Monster and that originally had a Vacuum fuel pump and no return path. So it will depend which fuel pump he has used, Ones of Carb'd CBR600s, ZXR400s, R6s etc should shut off when the fuel level in the float bpwls is high enough to shut the needle valves and then the back pressure should shut the pump off

yes skids-- i just remembered that tonio races a monster and not an SS-but you beat me to it and suddenly thought they are different regarding fuel return - but its probably too late and i have totally confused him-- sorry tonio please disregard my post i forgot you have a monster

Cheers Monstermob 998, yes you got me lost :lol:

It's an R6 pump indeed fitted to a late 583 Monster (late not because that's how it finishes the races right...) :lol:

Skid, yes that's how I thought it would work. Guess I'll have to open the carbs :(

After further inspection (read: I removed the air filters and tried again :lol: ) I can see that fuel is pouring from the overflow of the bowls and is spraying form the air intakes as well. Any idea?

Or the pump, just disconnect the fuel line between the pump and the carbs, block it off and turn on the ignition and see if the pump turns off

nice one, will try right now :)

Cheers Kev!

Pump seems to be working ok. When blocked it stops running.

I guess I now need to open the carbs?

Sounds like your going to have to, maybe a holed/damaged float or worn fuel need valves

Sorted, I had connecting the fuel line to some sort of vaccum stuff on the carbs :lol:

Bike's not running yet, but it's farting loudly :D

Muppet :p

What is it for btw? I understand the need for vaccum to power the pump, but what does it do to the carbs as well?

Tonio is the CV (Constant Velocity) carbs they will only suck up under vacuum and then drop again if the air below them can increase and decrease in volume

Are you saying that even though I am using an electrical pump, I still need to connect the vaccum inlet on the carbs? That would explain why she would not fire up...

Not sure what vacuum inlet you are refering to, I was thinking of the ones that have the black bobbin type filters on them

or did you originally connect to the overflow hose

Sorry Kev, I was even more confused than I got you confused :)

I actually connected the fuel delivery to the carbs breather :lol:

And after swapping the HT leads, the engine's now running. Roll on 2009 :D

Anton, maybe you should mark things or take a few pics before you pull them apart, or is it just the way the French do things :lol:

I don't like taking notes, marking stuff, etc... It just does not help me to understand what does what. Now I know that Mikuni CV carbs have a breather :lol: