Mark,
Thanks for the input. The carbs were balanced in that they drew the
same vacuum. However, I did not separate them at the linkages before
the final tuning given that they just been set the evening before
(when I first replaced the gasket). Possibly I should have and I will
tonight.
Given the huge difference from what most people find works, i.e.,
about 12 flats down normally versus my finding of 3 down front and 1
up rear, could this be a float bowl problem? If so, why now?
Thanks,
Jeff
"3 down front and 1 up rear" seems perverse now that I read it
again...but worse things have happened at sea.
At 1:30 PM -0500 1/4/00, IfixMGs@aol.com wrote:
>Jeff,
> Are you certain that you have both carbs balanced equally? An extra
>half turn of the throttle screw can change the mixture 2 -3 flats. I use a
>monophonic stethoscope to verify the mercury tube readings.
> I just had a guy come in the shop with a fresh tune up with same
>symptoms. Turned out the 2 front cyls had a bit better compression, than the
>rears (10-15#) and when the carbs were balanced, rears needed an extra half
>turn of thottle which, at identical # of flats produced a slightly leaned
>mix. Mercury rose same, but I could hear that the front wasn't as loud as the
>rear.... cranked the rear down a bit and reset mix. All was well with the
>lift test. Mark Childers Union Jack Spares VA Beach VA
Jeffrey H. Boatright, PhD
Assistant Professor, Emory Eye Center
Senior Editor, Molecular Vision
http://www.molvis.org/molvis
Mailto:jboatri@emory.edu
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