Thanks. I've just been having a look around the truck. I can see soot collecting at the joint between the front exhaust pipe and the manifold where it is connected by them spring bolts - is that where you mean? Could something like a blocked cat for example be causing that back pressure build up...
How's it going. I understand this may have been covered previously so apologies...
My 4.2 Turbo Diesel 100 series is making a hissing noise under moderate to heavy acceleration, notably when the turbo is kicking in going up hills etc, so basically when the engine needs more power. I'm thinking...
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