Jump to content


Photo
- - - - -

Carb peeing Out Fuel


  • Please log in to reply
19 replies to this topic

#1 Grimmy@JHE

Grimmy@JHE

    One Carb Or Two?

  • Members
  • PipPipPipPipPipPipPip
  • 759 posts
  • Local Club: tmf

Posted 08 February 2008 - 07:41 PM

i have a fectel red top fuel pump with a filter king. i connected it to my hif44 and it is leaking fuel everywhere....
anyone know why this is happening?
i have tryed another hif 44 and it does exactly the same.
any help is greatly apriciated....

#2 mini_turbo_pete

mini_turbo_pete

    One Carb Or Two?

  • Members
  • PipPipPipPipPipPipPip
  • 1,101 posts

Posted 08 February 2008 - 07:44 PM

i have a fectel red top fuel pump with a filter king. i connected it to my hif44 and it is leaking fuel everywhere....
anyone know why this is happening?
i have tryed another hif 44 and it does exactly the same.
any help is greatly apriciated....


You need to check the fuel pressure going to the carb, it should be no more than 4 psi

Where abouts is the fuel coming from?

#3 Grimmy@JHE

Grimmy@JHE

    One Carb Or Two?

  • Members
  • PipPipPipPipPipPipPip
  • 759 posts
  • Local Club: tmf

Posted 08 February 2008 - 07:49 PM

well the filter king thing has adjustable fuel pressure but i havent got a gauge so i prity much guess. i wound it all the way in and it was still peeing out...
thinking about it if maybe winding it in gave more pressure?

#4 The Matt

The Matt

    You don't escape that easily.....

  • Admin
  • PipPipPipPipPipPipPipPipPipPipPip
  • 17,232 posts
  • Name: Matt
  • Location: Overton, North Wales
  • Local Club: Welsh Border Minis

Posted 08 February 2008 - 08:44 PM

I'm sure it says on the top of Filter Kings which way to turn it. IIRC though, in is to reduce pressure.

Plus, I'm sure they're 'factory set' at 3.0 PSI, but should always be checked. Hmmm, Red Top's a bit OTT for a HIF44 anyway aint it? :D

#5 mini93

mini93

    He's just too casual!

  • Members
  • PipPipPipPipPipPipPipPipPipPip
  • 8,615 posts
  • Location: Warwick
  • Local Club: Medievil minis of Warwickshire

Posted 08 February 2008 - 08:50 PM

dunno matt :D that intierly depends on engine spec...u know that unless its somthing to do with different colours :shy:

#6 Grimmy@JHE

Grimmy@JHE

    One Carb Or Two?

  • Members
  • PipPipPipPipPipPipPip
  • 759 posts
  • Local Club: tmf

Posted 08 February 2008 - 08:56 PM

the red top was cheap. it shouldnt matter if i just set the pressure right.... right?
so do you all think that its this ridicules pump?
i thought if i could get this filter king right it would be fine?

#7 mini93

mini93

    He's just too casual!

  • Members
  • PipPipPipPipPipPipPipPipPipPip
  • 8,615 posts
  • Location: Warwick
  • Local Club: Medievil minis of Warwickshire

Posted 08 February 2008 - 08:58 PM

maybe a more specific fule regulator, proven one...filter king might be trying to do too many things :S

#8 Grimmy@JHE

Grimmy@JHE

    One Carb Or Two?

  • Members
  • PipPipPipPipPipPipPip
  • 759 posts
  • Local Club: tmf

Posted 08 February 2008 - 09:00 PM

like be a filter and a regulator? is it getting confused or something? i dont get it.

my mate has a fse one but its for injection and it goes up to about a million so its hard to see on the gauge what the needle is....


oh forgot to say, it starts when i turn the fuel pump off.... must be pressure?

Edited by grimmy, 08 February 2008 - 09:10 PM.


#9 mini_turbo_pete

mini_turbo_pete

    One Carb Or Two?

  • Members
  • PipPipPipPipPipPipPip
  • 1,101 posts

Posted 08 February 2008 - 10:03 PM

I'm sure it says on the top of Filter Kings which way to turn it. IIRC though, in is to reduce pressure.

Plus, I'm sure they're 'factory set' at 3.0 PSI, but should always be checked. Hmmm, Red Top's a bit OTT for a HIF44 anyway aint it? :D


a red top should be fine on any engine, the different facet pumps all pump around the same pressure but they have different volumes of fuel they pump, the pumps also pump at a constant rate regardless of RPM so even on a full race engine thats on idle there won't be that much difference in the ammount of fuel used.


It could also be the needle valve in the carb is a bit worn and not sealing properly.

#10 Grimmy@JHE

Grimmy@JHE

    One Carb Or Two?

  • Members
  • PipPipPipPipPipPipPip
  • 759 posts
  • Local Club: tmf

Posted 08 February 2008 - 10:14 PM

i have tryed it on two carbs though and its doing the same on both... was told that the one of them had been freshly rebuilt too.
it doesnt say which way to turn it on the regulator either.
i think the red top pumps 7psi. its noisy as too...

#11 ginigwunkle

ginigwunkle

    Up Into Fourth

  • Members
  • PipPipPipPipPipPipPipPipPip
  • 2,018 posts
  • Local Club: sheffield mini club

Posted 08 February 2008 - 10:39 PM

the filter king when set correctly will reduce whatever pressure the pump makes the the pressure set on the regulator.....

if the pump pressure was to much then the pipe joints before the filter kiing would be leaking, have you checked these?

take the carb off or try the one thats off:

empty it of fuel and blow into the 'tube' where the petrol goes in you should find it easy now turn the carb upside down and do the same it shuld now stop blowing through altogether,

if it doesnt the needle valve is too worn / stuck open, the float is misalligned / faulty(maybe leaking), the jet mavbe blocked up.

#12 mini_turbo_pete

mini_turbo_pete

    One Carb Or Two?

  • Members
  • PipPipPipPipPipPipPip
  • 1,101 posts

Posted 08 February 2008 - 10:43 PM

i have tryed it on two carbs though and its doing the same on both... was told that the one of them had been freshly rebuilt too.
it doesnt say which way to turn it on the regulator either.
i think the red top pumps 7psi. its noisy as too...


If the carbs have been sitting for a bit, the slightest bit of dirt stick in the needle valve will stop it closing off especialy if the fuel pressure is too high.

try turning it the other way.

Where abouts is the fuel coming out?

Is the car flooding as well?

#13 Grimmy@JHE

Grimmy@JHE

    One Carb Or Two?

  • Members
  • PipPipPipPipPipPipPip
  • 759 posts
  • Local Club: tmf

Posted 08 February 2008 - 10:56 PM

right, they dont teach me carbs in college any more so bare with me on names.

its coming from the brass needle? around the aluminum cylinder that moves up and down. i turned the pressure down and then pushed the cylinder thing up and it seemed to stop for a little while but then started peeing out again.
its not leaking anywhere but its dangerous as i only just noticed after i sort of got it running and it was backfireing loads. looked under the car and there was a pool of fuel. comes out of the air filter some how...

so tomorow i go and back the pressure off all the way and then turn it up a little by little? am i going to have to buy a gauge to get it to 3 psi?

#14 ginigwunkle

ginigwunkle

    Up Into Fourth

  • Members
  • PipPipPipPipPipPipPipPipPip
  • 2,018 posts
  • Local Club: sheffield mini club

Posted 08 February 2008 - 11:03 PM

does it come out of the filter when you rev the engine?

mine did this when the head gasket blew.....

--------------------------------------------------

the brass needle idside the carb? this is where it should come from? :S

the alumnium cylinder sounds like the jet....that goes down into the float chamber and brings up the fuel

does any fuel come out of the carb?

do you have pictures?

#15 Grimmy@JHE

Grimmy@JHE

    One Carb Or Two?

  • Members
  • PipPipPipPipPipPipPip
  • 759 posts
  • Local Club: tmf

Posted 08 February 2008 - 11:18 PM

fuel isnt suposed to just *yellow human water* out surely? the engine wouldnt rev as it was just flooding.
i will get pictures tomorow but it will be hard to see.
i cant see how it would be the carb if it was doing it on both of them? surely not?

thankyou all for your help so far... i know telephone diagnosis's arnt easy but its apriciated

Edited by grimmy, 08 February 2008 - 11:19 PM.





1 user(s) are reading this topic

0 members, 1 guests, 0 anonymous users