Zenith carb - Idle screw...stupid position!!

[ashhhhh]

Hey all

OK so who the hell decided to bury the idle screw behind the vacuum setup and a heap of brackets...:mad:

It is literally impossible to get a screw driver onto it as far as I can see. (without removing brackets and vacuum deal)

Has anyone modded theirs to make it more accessible??

Thanks
Ash

[Blknight.aus]

I just use a long skinny screwdriver, its easy.

[ashhhhh]

But there is no straight path to the screw, I can get a driver in there but its on a 45 angle to the head....just chews it out.

Plus there is a lock nut on the base which you don't have a hope in hell of getting a spanner onto...:confused:

Does yours have the vacuum unit? Thats what is in the way.

[4bee]

Sounds like it may have been assembled incorrectly. I have no problem with mine.

[ashhhhh]

Hmmm...anyone got a pic of theirs?

[ashhhhh]

A pic of mine.

The screw is behind that vac unit.
Its angled so that you cant get onto it via the gap you see above the bracket, nor below the vac unit.

The head points directly at the bracket and is exactly in the middle of it...

[4bee]

Hmmm, I don't think that is the Standard Zenith 36IV Carb. Not sure just what it is, but my Zenith doesn't have that Vacuum actuator. Yours may have been "doctored" for some reason.

[ashhhhh]

Yeah the seems to be a couple of varieties.

It says 36IV on it so it IS that model, my car is an '81 model though so fairly recent in the scheme of these things.

I think its some sort of economy device, pollution control?
Either way its a PITA! :eek:

[Blknight.aus]

urm thats not something Ive seen on any of the zeniths Ive worked on...

you can probabley get to the adjust screw with a right angle screw driver and the nut with either a C or crowsfoot spanner.

[JDNSW]

I have a feeling you are not meant to adjust it - Quote from the owner's handbook of a 1981 Series 3 :

" Carburetter mixture ratio and idle speed settings are preset and sealed at manufacture and must not be interfered with. Under normal circumstances they do not require attention except at major engine overhaul. ......... Under no circumstances must the mixture be disturbed as this would almost certainly result in the vehicle failing to meet with legal requirements in respect to air pollution" (Omitted bit is about only dealers having necessary equipment etc)

Given the above, I suspect it has been deliberately made difficult to get at! Earlier models did not have the problem, nor the vacuum device, which will be some sort of damper to control the rate at which the throttle can be closed.

John

[Blknight.aus]

ahhh the post 79 zenith with emcon...

you have fun with that one...

most post79's Ive had to play with have been hollied.