Weber or SU?
Jon
----- Original Message -----
From: "Richard Taylor" <tarch@bellsouth.net>
To: <fot@autox.team.net>
Sent: Tuesday, July 29, 2003 3:38 PM
Subject: barking carbs
> FOTers
>
> Last weekend I competed in the VDCA event at the Barber Motorsport Park in
> Birmingham, AL. Beautiful weekend and a terrific track but I came home
early
> with a curious motor problem.
>
> On the track at full throttle I first lost one, then a second then a third
> cylinder until the engine quit entirely. After a ten minute rest the car
> restarted and struggled (ran roughly) back to the paddock. It was low on
> water. I let it cool over night and started it the next morning. If I
revved
> the motor slowly, it would come on up to full rpms. However, if I blip
the
> throttle quickly, it stumbles and barks fiercely out of the velocity
stacks.
>
> I retarded the timing but nothing changed. I checked the movement of the
> carburetor pistons and they look normal. So I packed up my stuff and drove
the
> 150 miles back to Atlanta in OD ( 2500 rpms, +60 mph). Temp and oil
pressure
> was normal and there was no measurable loss of either fluid. On uphill
grades
> (i.e.., under load) the barking carb syndrome would return.
>
> The internals of the motor sound normal.
>
> Any ideas of where to start looking? I'm kinda puzzled.
>
> Richard Taylor
> TR-4 Atlanta
|