<VV> idle question 2

MarK Durham 62vair at gmail.com
Thu Jul 10 13:35:20 EDT 2014


The reason the car goes when you mash the throttle is the extra fuel given
from the accelerator pumps, the jets cannot give you that boost of fuel.

Mark Durham Hauser Idaho
62 2Door Coupe 4speed Red/Red
On Jul 10, 2014 9:16 AM, "Jay Maechtlen via VirtualVairs" <
virtualvairs at corvair.org> wrote:

> On 7/9/2014 7:57 PM, Matt Nall via VirtualVairs wrote:
>
>>       Well, tonight I had to move the car across the driveway.  The
>> engine was
>> stone cold not having been run in a week.  Imagine my surprise when I
>> started it
>> (carbs with
>> 51 jets and the chokes closed) the CAR IDLED PERFECTLY!!!!!!!!!!!!!
>>  Smooth as
>> silk.  Then, as it warmed up and the chokes opened, back to the same crap.
>> Probably the same thing that happened with the other (50 jet) carbs
>> My second question is this:  This sure does point to the jets being too
>> small,
>> right?  Sounds logical to me.  I thought about putting in #53's.  I saw
>> something in the
>> Clark's catalogue about using jets a size bigger because of today's
>> crappy gas.
>> I only want to do this job once, so any and all thoughts and opinions
>> welcome.
>> Thanx.
>>    Randy
>>
>> ============================================================
>> ==================================
>>
>>
>> Randy!!  Mainjets have nothing to do with idle / off idle
>>
>>
>> Do you have TWO  good streams of fuel when you snap the throttle open
>> from each carb? [accelerator pumps ]
>>
>>
>> Also,  have you disconnected the down link on the passenger carb and then
>> snap opened ONE carb at a time?  It may be only one carb...
>>
>>  But he can run down the freeway as long as he keeps light throttle.
> Doesn't that suggest that the  off-idle is ok?
> If the jets were ok, it should run fine when he mashes it in midrange,
> aside from any stumble caused by possible accelerator pump issues.
>
> Another thing - Won't headers and free-flowing mufflers tend to lean the
> mixture?
>
>
> --
> Jay Maechtlen SoCal '61 2-dr modified w/fiberglass skin, transverse 3.8
> Buick V6 TH440T4 trans
>
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