47 replies to this topic

[Marc13]

Hi, I've noticed a leak at the bottom of the carb. Theres no sign of any petrol higher up on the carb and also none around where the fuel pipe goes into the carb, so the leak has to be really low down. It looks like at the base of the carb there are two parts that bolt together.
Would there be a gasket between the upper and lower part? And maybe the gasket/seal has gone and thats where it is leaking from?

Any thoughts?

[johnR]

Do you mean where the jet screws in to the bottom of the carb? or where the pipe goes into the float bowl? It would help to know what carb you have and maybe a photo?

Edited by johnR, 22 August 2021 - 04:20 PM.

[Miki Leyland]

Which carb type is it? An HIF type?

[Marc13]

Its a Hif carb. Its leaking right at he very bottom - appears to be where the base at the bottom joins the main body of the carb. Go any lower and youd be under the carb. I'll try and get a photo tomorrow

[Marc13]

See photo
As you look at the photo, its dripping from the bottom left corner of the carb

Attached Files

•  Screenshot_20210822-205708_Gallery.jpg   27.94K   11 downloads

[richmondclassicsnorthwales]

WZX1100A is a complete gasket and needle with valve 

 

AUD3588A is just the seal

[Miki Leyland]

It's quite typical for HIF to leak from there. Just the O ring replacement I believe.

[Marc13]

Thanks so far.

So presumably the 1st thing I need to do is remove the entire Carb?
Any hints or tips on the best way of doing this? It all looks a bit tight down there! Not a lot of room to work.
Once the carb is out, what is the next step?

[cal844]

It's quite easy to remove the HIF carbs. I'd suggest you buy 3 carb to inlet manifold gaskets just so you have them if needed.

To remove the carb
First remove the choke and throttle cables
Next is the fuel and breather pipes
Then the 4 nuts holding the carb to the inlet manifold.

Note the positioning of the abutment plate and spacer.

Hope this helps

Cal

Edited by cal844, 03 September 2021 - 09:16 AM.

[Marc13]

Thanks Cal...other than the 3 manifold gaskets, do I need a gasket for the carb itself (as i assume this is what has perished to cause the leak)...if so is there a specific one I need?

Also - once the carb is off. Is there anything I can do to it, to like give it a bit of a refurb?

[richmondclassicsnorthwales]

WZX1099A is a kit for 38 and 44's

 

This is the seal and needle valve with filter. As you have the bottom off, you should put a new valve in

 

Sods law it would leak in 12 months time this time from a dodgy valve

[Marc13]

WZX1099A is a kit for 38 and 44's
 
This is the seal and needle valve with filter. As you have the bottom off, you should put a new valve in
 
Sods law it would leak in 12 months time this time from a dodgy valve

Thanks - do you have a link for the manifold gadkets that Cal refers to?

Thanks again

[cal844]

Is it a 38 or 44?

3 of these just incase

http://www.minispare...|Back to search

PN 88G429B

Edited by cal844, 04 September 2021 - 07:49 PM.

[Marc13]

Its a 44

[Marc13]

Hi
I assume the 4 bolts i am undoing to remove the carb are the 2 shown in the attached photo (half undone) and the 2 below these?

If so, i think the 2 at the bottom are just impossible to get at! Any hints/tips?