Yesterday, while re-installing the again repaired alternator, we noticed that a hose to/from the airpump had ripped.
The engine has been having some misfiring and uneven running from cold starts lately.
We exchanged the defective hose and now the engine has the best cold start performance since I don’t know when…purrs like a kitten, no backfiring, no hick-ups and a very impressive roar and power delivery when putting the pedal down.
The makes me curious, because in other air pump related topics, it is stated that the air pump only pumps air into the exhaust for emissions reasons…
Does this pump have a secondary function???