Hi, I have a 1975 Jennings Roadranger, it had a 2.5di fitted by the last owner, it runs really well, and has been really reliable, but it is ridiculously loud in the cab.
I have fitted foil backed insulation under the bonnet, on the firewall, and covered the floors and front arches, its better, but it is still too loud to have proper conversations!!
Is there something that stands out as being a likely cause?
thanks