My Renault Trafic 1.9 DCi glow plug light comes on and goes into limp mode. It also wont rev over 2000 and emits lots of white smoke from the exhaust. Can anyone help? I have a 2003 diesel Renault ...

The glow plugs should only be changed if there is a sign of a problem (difficulty starting, misfire, warning light, poor engine idle). Costs will be between £150 and £250. Labour costs will increase ...