Hi, no I have done 1000 miles since then and no indications of any problem, only better fuel economy and better performance and engine also sounds healthier, walnut blasting is safe way to clean ports and main large bit you can hoover out and blast them out with compressed air and if there is any micro dust left it will burn without leaving a marks!
Thank you for the comprehensive video. Have you had any longer-term issues with the valves’ oil seals deterioration from the walnut bits and dust?
Hi, no I have done 1000 miles since then and no indications of any problem, only better fuel economy and better performance and engine also sounds healthier, walnut blasting is safe way to clean ports and main large bit you can hoover out and blast them out with compressed air and if there is any micro dust left it will burn without leaving a marks!
What caused the smoke? I want to do the same job on my XC60 in two weeks.
Hi, rocker cover gasket or vacuum pump, I do them both in next video!
where is your service located
East midlands LE111ED RedLine Garage