Hello RAMVA!
I am getting lower than expected fuel consumption on my 1975 1303 (Super Beetle). It has an AR code 1300 engine that in the past someone has rebuilt into a 1600 and fitted a dual progressive Weber carburettor.
I've owned the car about a month, the previous owner had parked it in a garage for between eighteen months and two years as it failed the MoT with framehead rot. It has now been fixed, and the engine given all new service parts - about the only thing I haven't touched is the carb, mainly since I have never set up a Weber before! I've had the car on the road being driven daily since Tuesday 7th November.
Currently, 24 litres of fuel gets me 100 miles - that works out at around 16 Miles per US Gallon!!! I'm not expecting amazing fuel economy, but at a cost of £0.90 ($1.71) per litre it is a little tough on my wallet...
In comparison, my '66 1300 with a complete stock setup (30 PICT-1) gets around 25 miles per US Gallon.
The manifold and air filter on the 1303 are from Scat, and the manifold is the type with the heat risers. They look relatively new, and since the car has only covered 10,000 miles since 1990 I don't think they have a lot of mileage on them either.
Any idea what to check? After the 30 PICT-1 on my '66 1300 the Weber looks quite scary The plugs, points, cap, condenser, leads and plugs where all replaced two weeks ago during the recommissioning. It's also had the timing, valves, etc done. Everything you would expect with a good service.
The thing is, the car is running beautifully at the moment - no hesitation or backfiring - nice and smooth just as you would expect. The exhaust is a horrible 4-tip Monza, I would fit a stock one but a previous owner fitted a smooth rear valance so it won't fit.
Can anybody help me with the procedures to check the choke is set correctly?
Thanks in advance!
-- Howard Rose