Larry;
There is a rich-lean screw for the idle mixture. I had a similar problem and a
friend who is a local expert on the Qjet adjusted mine and also had me up the
jet size because of the cam and header. Can't tell you which screw to adjust (I
lost all mine years ago), but some one here should be able to point it out. It
may also be in the manuals.
Marcus
> with new Jacobs wires (we say "waarrs" here in the Ozarks....rhymes with
> "taarrs" , you know, like Goodyear and Faarrstone), and new rebuilt by
> cinnabar carb and plugs and reset timing to specs, new Dunn tranny.......my
> engine (we say "motor" in the ozarks......"runs on" after shut-down. I
> reduced the idle screw to 600 rpm " in drive" like the book says. I might
> have to reduce it more. But my big concern is that I think that the "run on"
> is caused by and overly rich setting. Even my exhaust smells rich. This is
> with the electric pump "off". I am wondering if my carb needs adjustment? I
> have looked at the manual, and without some guidance, I do not feel that I
> can accomplish anything but messing it up worse. Does any of this make sense
> to you all. Also, vacuum is steady at idle at 17". Compression is 152-159#
> all cylinders. Larry in MO, PB 75
There is a rich-lean screw for the idle mixture. I had a similar problem and a
friend who is a local expert on the Qjet adjusted mine and also had me up the
jet size because of the cam and header. Can't tell you which screw to adjust (I
lost all mine years ago), but some one here should be able to point it out. It
may also be in the manuals.
Marcus
> with new Jacobs wires (we say "waarrs" here in the Ozarks....rhymes with
> "taarrs" , you know, like Goodyear and Faarrstone), and new rebuilt by
> cinnabar carb and plugs and reset timing to specs, new Dunn tranny.......my
> engine (we say "motor" in the ozarks......"runs on" after shut-down. I
> reduced the idle screw to 600 rpm " in drive" like the book says. I might
> have to reduce it more. But my big concern is that I think that the "run on"
> is caused by and overly rich setting. Even my exhaust smells rich. This is
> with the electric pump "off". I am wondering if my carb needs adjustment? I
> have looked at the manual, and without some guidance, I do not feel that I
> can accomplish anything but messing it up worse. Does any of this make sense
> to you all. Also, vacuum is steady at idle at 17". Compression is 152-159#
> all cylinders. Larry in MO, PB 75
