Slow Ignition Advance

[silent_witness]

Sounds like it could be anything.
If its a problem while accelerating, it wont be the vac advance.
Look elsewhere.

Cheers will do

[silent_witness]

There is no problem, just you noticing something that you didn't/don't understand.
I see no reason for having a 'vaccum advance' except on stock daily drivers for average/normal people.

....well isnt that what my car is.....a stock daily.......

[SeptemberSquall]

There is no problem, just you noticing something that you didn't/don't understand.
I see no reason for having a 'vaccum advance' except on stock daily drivers for average/normal people.

plenty of reason
in my experience cruise fuel economy can improve between 10-20% and less throttle is required to maintain cruising speed

[MWP]

plenty of reason
in my experience cruise fuel economy can improve between 10-20% and less throttle is required to maintain cruising speed

Agreed.
People who disconnect them and then claim their car "goes harder" need to learn how to tune ign timing properly or find a new mechanic.

[DX20VT]

We always remove vacuum advance on race dist's as race cars dont worry about fuel economy at cruise etc etc,
and we run the mechanical advance quite high so you dont want vacuum advance adding in any more.

If you just unplug the vacuum line on a normal car, you should'nt notice too much of a difference apart from fuel economy and cruise driving.

[silent_witness]

another questions guys, on the line coming BACK from the vaccumm theres a 3 way joint, and on the line that runs to the carbie it has a sorta one way valve.....whats it for?? negative pressure??

[SeptemberSquall]

We always remove vacuum advance on race dist's as race cars dont worry about fuel economy at cruise etc etc,
and we run the mechanical advance quite high so you dont want vacuum advance adding in any more.

If you just unplug the vacuum line on a normal car, you should'nt notice too much of a difference apart from fuel economy and cruise driving.

agree entirely
two different applications at issue here

[MWP]

another questions guys, on the line coming BACK from the vaccumm theres a 3 way joint, and on the line that runs to the carbie it has a sorta one way valve.....whats it for?? negative pressure??

Do you try to work these things out for yourself at all, or do you just jump on here and ask?

Asking things like this when 5mins of thinking/tinkering on your part would probably answer the question will give you a bad rep... a problem when you do have a serious question you want to ask.

[oldcorollas]

RTFM?

you do have a manual for the car?

[bansheebuzz]

did you adjust the distributor timing after replacing the points?

[MWP]

... and gap the points properly?

[silent_witness]

yes and yes.....i think it looks 'slow' because of the way i thought the vaccumm workd, but know having been told its wrong...it advances but....a good second after i give it a boot...so i dont know...

[MWP]

Its probably ok.
Check the weights in the bottom of the dizzy too... make sure they can move freely.
These do have a big effect on performance, and can sieze up easily.