[Fot] Fast idle

Bill Babcock Billb at bnj.com
Tue Feb 10 11:16:49 MST 2009


It's also pretty easy to screw up the timing, or to have a sticking  
advance unit. I had an adjustable timing light get out of calibration,  
and your timing mark could be off. I'd also spray the gasket surfaces  
with water and look for a stumble as the water gets drawn in. So easy  
to get a vacuum leak.
On Feb 10, 2009, at 6:49 AM, Kas Kastner wrote:

> Given you are certain about the possible gasket and manifold leaks  
> the only
> place remaining is the carburetor throttle plates. The engine must  
> get air
> from somewhere to give the fast idle. They only have to be off a  
> fraction to
> allow enough air to pass to give the fast idle as there is no load  
> on the
> engine.
>
> You just might be able to see by just removing the bells and slides  
> of each
> carb to check the plate position.That opening is pretty difficult to  
> see from
> the outside of the carb but remove the carb and shine a light at the  
> front and
> looking at the plate from the rear you will if there is a gap.
>
> To reseat the plates, slack off the screws, tap the plates lightly  
> and check
> to see that the gap has been closed, hold tightly closed with your  
> finger as
> you tighten the plates.  I would remove each screw individually then  
> and apply
> a little Loctite unless the screws are the split end type, replace  
> each screw
> in turn, recheck  the  position with the light.
>
> The error can happen easily on a re-build of the carbs.
>
> [demime 1.01d removed an attachment of type text/x-vcard which had a  
> name of Kas Kastner.vcf]
> _______________________________________________
> Support Team.Net http://www.team.net/donate.html
>
> http://www.fot-racing.com
>
> Fot mailing list
> Fot at autox.team.net
> http://autox.team.net/mailman/listinfo/fot
>

Bill Babcock
Babcock & Jenkins
Billb at bnj.com
503.936.7660
www.bnj.com

Editor
Ke Nalu e-Magazine
Paddlesurfing's Web Journal

Bill at kenalu.com
www.kenalu.com
blog: www.ponohouse.com/ponoblog



More information about the Fot mailing list