keng2 wrote:
> "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
When you have difficulties starting, does it kick back, or does it take a
lot of cranking before it fires? Or is it something else?
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