Engine Performance problem
2007 Other Fiat Models Manual 80000 miles
My dad bought a brand new Fiat Strada but has had endless problems after a service when the cambelt was meant to be replaced. Ever since that service, it lacks power, idles very roughly at times and thick black/blue smoke comes out the exhaust when he starts it in the morning (intermittent though) and everytime he changes gears. It has been back 6 times now to the Fiat service sattion but they can't find anything wrong. They are adamant it is fine but the bakkie can't reach even 80 up a hill with the accelerator flat. Also, the smoke is really think? What could be the problem? My dad is at his wits end.
Thanks for your help!