what's this??? HS2 Carb

[bmcecosse]

You don't need a vacuum gauge to tell you that! As for PI set-up. how on earth does a vac gauge help - I assume for setting the throttle gaps - but a simple rubber tube to the ear does that for me. Oh - and Color Tune is utterly useless too........ But ammeters (and hand held multimeters) are excellent!

[Alec]

Hello BMCE,

the vacuum gauge gives a general view of the health of the engine, if the vacuum drops it means that some maintenance is required. If it is not corrected the engine will run richer and starts a worsening general running. The whole principle of the Lucas injection is based on vacuum to control mixture. Unfortunately at the time the car was introduced the main dealer's mechanics did not understand this and the injection system was blamed for poor running when it was simply basic engine settings that were out of specification.

Alec

[Matt Tomkins]

Good grief - much confusion over the names of parts.....and wouldn't you have the fixings loosened off (or at least have the necessary spanners to hand) if you were doing this? He also does most of the actual dis-assembly off camera !

i admit there atre things i could have done better, but i can't help feeling that any visual referance is better than none.
I am currently in halls and, therefore, only have access to very limited tools,
A friend contacted me yesterday, and i tried to explain the dissasembly process to them, however without the visuals it was difficult.

As i said in the description, feel free to correct me.
This was meant to be a helpful little video to aid someone who's never done it before. not an indepth guide!

If you can do better, BMC, feel free, but please think twice before expecting my first video to be 100% perfect and encyclopedic

[Matt Tomkins]

not to mention that this video was made in one take amid my university studdies, primarily to help a friend. i simply thought it would have been of some interest here

[bmcecosse]

It is of interest - and I had no idea it was your 'first' video, so I'm sure you can easily do better. I suggest you have another go - this time with the fixings pre-loosened and tools to hand, and do the actual dismantling in the field of the camera so folks can see exactly which part goes where.
@Alec - the vacuum reading depends only on the engine revs and the throttle position, and the atmospheric pressure of course. Sure - if the piston rings wear and/ or the valve seats or gaps go awry over time there will be changes - but the increasing oil consumption and poor compression readings will soon tell you that!

[Alec]

Hello BMCE,

no that is not true, ignition settings and valve clearances affect the idle vacuum, not only worn engine components.

Alec

[bmcecosse]

Well yes - i said 'valve gaps' - but ignition only if it affects the idle speed!