[Mgs] too rich or too lean?

Steven Trovato strovato at optonline.net
Mon Oct 26 06:47:47 MST 2009


Bob,
I have always found clogged filter/failed fuel pump type problems to 
be worse when demand is higher, like climbing a hill.  He is 
reporting the exact opposite.

-Steve Trovato
strovato at optonline.net

At 09:28 AM 10/26/2009, Bob Howard wrote:
>Aaron,
>    Pop pop pop stutter causes me to suspect the supply of fuel, perhaps
>from clogged filter or failing fuel pump. It's the sound of insufficient
>fuel.
>    Had a similar situation myself recently in my '72 GT. Ran fine, did
>not run, started fine, ran fine, did not run.  Turned out to be the
>aftermarket fuel pump installed by DPO, a Harding.  Would pump about .9
>pint into a test container, then stop. Switching igntion off and back on
>would cause it to pump again.  .9 pint is sufficient for several minutes
>running, and that makes diagnosis difficult w/o disconnecting the pump
>and pumping into a container.
>Bob
>
>
>
> > Essentially,
> > after a half-mile of steady speed cruising, she would start this
> > pop-
> > pop-pop shutter.  If I were climbing a hill, or accelerating
> > moderately, no problems.  I've recently set the timing and set the
> > carbs.
> >
>__________


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