I spoke to one member on here who had cleaned his sills out with a pressure washer - I think you need to jack the car up, and peel back the wheel arch liners at the end of the sill, then there are some plugs or holes where you can blast the pressure washer lance into the sill, with the water draining out of the jacking point holes. The only problem with this, is that you then need to dry out the inside of the sill before thinking about rustproofing with cavity wax inside the sill. You could blast compressed air through the holes to get the water out, then leave the car in a warm, dry ventilated area for day or two for the sills to dry out (a hair dryer could be used to put warm air through the sills to help the drying process). Do not think about injecting cavity wax until you think you have dried out the sills - this could trap moisture and make corrosion worse.
Good luck - this is a job I mean to do on my car one day.
Pete
|