After quite a few months of erratic running, I decided to pull the Weber off & give it a proper clean up. The first thing I noticed in dismantling bits was how dirty the fuel filter was. This would not have been helping things. It was really discoloured after comparing it to the new one.
As always when dismantling older engines, despite how careful you are something usually breaks. On this occasion, it was one of the small water pipes attached to the water inlet for the automatic choke on the Weber. It was badly corroded on the inside, so it was not surprising but not what I really wanted as replacing it was not going to be easy.
It just so happened that in my spare parts bin, I had a Weber which had an automatic choke but the water inlet pipes were of a larger diameter, more commonly seen in all the parts manuals. So, I proceeded to dismantle the carbie & give it a thorough cleaning.
After much air blasting & cleaning, the carbie all when back together again but I realised before bolting it back on the manifold that my previous set of complicated hoses was not going to fit as now one of the water inlet/outlet hoses faced the opposite direction. It took me some time to realise there was a simple solution involving a right angle brass fitting which screwed into the manifold & making a different T piece in one of the heater hoses. When all connected, it should be much neater than the previous arrangement which had hose running everywhere. This is how it looked.
After affair bit of fiddling with the mixture screw & the idle screw plus using my ear plus my old vacuum gauge, it seems to be running quite well. The fast idle screw is another matter but I think that is sorted also. After a good clean of the plugs, some new 98 octane Shell V-Power, the car drove well for about 20 minutes with no misses & also idling well about 800 rpm.
Next run will really tell if it is all sorted.
(click on the photos to enlarge)
