Hi
I have a 1971 500f with a Weber 28 IMB carb fitted. I am trying to get it through the spanish ITV, MOT and its failed twice on emissions.
The max the emissions can be is 4.5 and my readings are over 7.
The engine was rebuilt, carb done at the same time, I have also put some additives in the fuel to run through the system. It seems to run well, sometimes does a little hiccup when accelerating but otherwise is fine.
When cold and I rev the engine, it looks like fuel is coming out of the exhaust, this clears once warm. I'm not familiar with these carbs so any help is always greatly appreciated.
Would replacing the carb for the stock Weber 26 make a difference?
Thanks
Mark
I have a 1971 500f with a Weber 28 IMB carb fitted. I am trying to get it through the spanish ITV, MOT and its failed twice on emissions.
The max the emissions can be is 4.5 and my readings are over 7.
The engine was rebuilt, carb done at the same time, I have also put some additives in the fuel to run through the system. It seems to run well, sometimes does a little hiccup when accelerating but otherwise is fine.
When cold and I rev the engine, it looks like fuel is coming out of the exhaust, this clears once warm. I'm not familiar with these carbs so any help is always greatly appreciated.
Would replacing the carb for the stock Weber 26 make a difference?
Thanks
Mark