My Linea Emotion Diesel is giving out black smoke while acceleration. Smoke emissions were way too high when i was cruising at 120 Km/Hr on a rainy day. It might be due to friction occurring due to wet roads. Pick up has gone too low and with AC on, power seems almost gone as if this 91 HP multijet engine is not meant for this tank like built car, also power to weight ratio doesn't match. This makes me go hard on throttle sometimes which in turn leads to drinking more fuel and economy goes down.
So should i go for EGR valve clean up to correct these prevailing issues?? Local mechanic suggested the same. It's almost been 50,000 KM since last EGR clean up.