[Spits] 79 Spitfire with SU carbs

[Doug Braun]

The moment it starts stumbling, pull out the choke
partway and see if it gets better.  If so, it suggests
that it is leaning out at high RPMs.

Also, does it stumble instantly at high RPMs, or is it
only after several seconds of full-throttle running,
like when merging onto a freeway?  That is the classic
symptom of a clogged fuel filter , lines, etc.

Doug Braun
'72 Spit


--- David Woerpel <dwoerpel at wi.net> wrote:
 So we rotated the
> distributor a bit and I got it 
> up to 5200 before it stumbled.  But once it started
> to stumble the 
> 'stumble limit' (not a character from Harry Potter)
> became lower until 
> we were around 4000 again.  The pinch bolt is tight
> so that didn't slip 
> and we drew an index line so we could check for
> that.