Hi guys,
I've just rebuilt the carb on my '59 1200 30hp.
It's a Solex 28PCI (Not PIC or PICT)
The emulsion tube snapped when I was nipping up
the air correction jet. Looks like it had a hair
line crack for quite awhile. I got a donor carb
to get a replacement emulsion tube.
My problem is now too much airflow, I think.
It runs fine on tickover and when you blip the
throttle. But as soon as you apply revs and the
venturi kicks in, it runs really bad. Misfiring
etc. Running really lean. Anyway, the only way I
can counteract the problem is to set the choke
flap slightly closed to decrease airflow into the
carb. This does the job surprising well actually
until you get over 50mph (I don't do more than 60mph
by the way!), then it starts to rough lean again and
runs rough with a few back fires.
I've checked timing, ignition etc. Gas analyser shows
good % of fuel until the revs increase then it drops
really low.
My local guy reckons I should try and get hold of
a new carb. (NOS) But the car ran absolutely fine
for the last 7 years. I don't think it's pulling in
air through the throttle shaft, I'm not a carb
rebuilder but it doesn't seem to have any play.
Maybe a tiny,tiny bit of movement but I don't know
enough about these things to know if that could be
making such a difference. I'd only know if I fitted
a new carb but I want to see what you guys think
before I go to those lengths.
I think I've explained that OK. Any advice would be
appreciated.
Here's hoping finding a 'New Old Stock' Solex 28PCI
is not my only option!
Jay