"Whole Lotta Tom" <Whathu@[EMAIL PROTECTED]
> wrote in message
news:narvi.13618$eY.924@[EMAIL PROTECTED]
>
> "keng2" <keng2@[EMAIL PROTECTED]
> wrote in message
> news:46bde3c2$0$29722$4c368faf@[EMAIL PROTECTED]
>> I recently replaced the dist. in my Mstng 390 which needed it so badly
> that
>> it wouldn't run with the vacuum advance connected.The cent adv springs
> were
>> almost falling off and a $33 exchange dist at the local Auto Zone was
>> well
>> worth it.Now I seem to have a new problem.I set the idle timing for
10deg
>> BTC and the engine performs well but starts with extreme difficulty.I
> tried
>> a setting of 5 deg BTC and it starts great but of course doesn't
perform
> as
>> well. Is there a happy medium or should I be looking for vacuum leaks
or?
>> KenG
>>
>
> When you set the timing, do you have vacuum advance operating? Are you
> using vacuum advance at all? If so, where are you sourcing the vacuum?
>
>>There is a vacuun advance take off from the Holley to the dist that
uses
>>venturi flow so there is essentially no vacuun advance(or line vacuum)
at
>>idle even if the tube is connected. The advance vacuum doesn't take
effect
>>until greater than 2000 RPM.So I,ve decided to keep the 10 deg BTC
setting
>>and utilize the better performance while checking for other vacuun leaks
>>at the carb base,intake manifold and vacuun operated power
>>accessories.(pwr brakes,xmission modulator,unknown smog equip)and what
do
>>you suggest??
Thanks.
KenG
>
>
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