|End of the road for carb
Question : I OWN an 18-year-old Peugeot 305 that
has done just 85,000km. Of late, the fuel
consumption has been steadily rising
and I am finding it difficult to start the
engine in the morning.
My mechanic reckons that the carburetor is worn beyond repair and has to
be replaced at a cost of approximately
RM1,800 or more.
I would appreciate a second opinion
from you if a new carburetor is
necessary or, could a service or overhaul
A CARBURETOR contains a number of
moving parts that wear as they move relative to each other. In addition to the
moving parts, it contains a number of
flexible rubber components such as
diaphragms and seals that will harden
over time and leak.
Hence, you are faced with not just worn
major components but failed rubber parts
The rubber components of a carburetor
are fairly easy and cheap to replace. Most
vehicle manufacturers supply a complete
set of replacement rubber components
(known as an overhaul kit) for the carburetor. These kits are not expensive.
Replacement of rubber components from the kit is on a one-to-one basis
but the carburetor needs to be adjusted (set up) by a
The main metal parts on a carburetor
that are susceptible to wear are the spindles
and the carburetor housing at the points
where the spindles pass through the housing.
When there is excessive clearance
between a spindle and its bore, there will be
air leaks and the resulting air fuel mixture
is upset. Unfortunately, when this happens,
the carburetor is destined for the scrap
It is often not economical to fit oversize
spindles – even if these are available – since
other crucial components will also be well
past their prime if the spindle-bore is badly