I replaced the longer fuel line to the inline fuel filter.  It turned out to
be aged and cracked.  Result:  no more shaking!

On Thu, Aug 13, 2009 at 9:06 PM, Peter Frederick <psf...@earthlink.net>wrote:

> Adjust the rack dampner bolt.  Be careful, as adjusting until you have
> perfect idle can cause it to refuse to start cold from inadequate fuel
> delivery.  Eventually, you will have to just live with the shake as the
> spring continues to degrade
>
> The 5 cylinder "shake" is  longitudinal, which may appear to be side to
> side, and the most common cause is a worn rack return spring which allows
> the rack to oscillate in time with the engine vibration.  That causes uneven
> fuel delivery, making the side to side action.
>
> The real cure, of course, is to take the IP completely apart and replace
> the spring, but it takes a full rebuild to get to it.
>
> Peter
>
>
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