Hi guys,
I have fitted the 218 on my D11 with dual 97s and haven’t been able to get the engine running properly since. The main problem is that the engine bogs down and sometimes dies at about 1/3 throttle. It is worse under load and if you open it up suddenly. A mate who knows his way around flatties has been helping me. When I bought the car it didn’t have the vacumn pipe from the dissy connected. Connecting the vacuum pipe to the carb port made things much worse with the engine missfiring all over the place! We thought we sorted that out by putting back the missing washers in the vacumn mechanism in the dissy (between spring and vacumn pipe). It now idles okay, and the timing is advancing when both the vacumn and mechanical advance kick in at part throttle. We just don’t if we are dealing with a carb problem or a dissy problem. We have taken the dissy apart and checked it out. We have fitted a fuel regulator and fuel pressure is 2.5 psi. We have down jetting the main jets to 43s and the power valve to 67s. The carbs were brand new.
We took it out for a run on Thursday after we changed the jets and set the timing up and we only made it a few hundred yards! We thought it was fouling plugs but they are new and we cleaned them to make sure! We have now run out of ideas!
Any advice would be gratefully received before I shut it away at the back of the shed and star working on my '23 Model T!
Many thanks,
Simon