I was instaling the newly rebuilt motor in my car and had to go to the auto parts store for a motor mount. When I got back the cover had blown off, motor was soaked with rain and there was some water inside the carburator and I noticed a little moisture in the distributor hole but it wasnt much. What should I do? Is there an additive I can use to dry this thing out? Would WD40 help in each cylinder?
Any advice would be helpful. Oh and it was down pour not a drizzle.

 

Don't put WD 40 in the cylinders, it will remove the oil layer.

All I would do is change the oil and filter. Then take the spark plugs out and spin the engine over. While it is turning, put a finger over each spark plug hole in turn, and let the compression blow the cylinder contents out.

If you have an air line blow the inlet tracts and cylinders free of moisture and also the carb. You need to make sure no water is inside the inlet manifold.

If water has got into the hydraulic lifters, they will have to be cleared, but that could be done just by spinning over the engine plugs out and developing oil pressure a while.

The carb could be removed, washed with fuel, and sprayed on the outside with WD 40 to make sure the linkages are OK.

I wouldn't worry too much, because rain water does not have any salt in it and is fairly clean.

The main problems would be water left in the inlet coming through when the spark plugs are in, and also cylinder corrosion if the engine was not going to be run up for a few weeks. If you don't plan to run the engine then I'd drip a tiny amount of ordinary engine oil in the cylinders and again spin the engine over with the plugs out and putting a finger over the plug holes in turn again

 

i doubt if you have much of a problem might want to change the oil but i don't think i would. i'd try to blow it out of the carb with air. there's a lot of water in the air anyway and it get's sucked into the engine. long as you don't have a puddle in the carb waiting to go to a cylinder you'll be ok.

 

If you have water in the air from a compressor you need a dryer in the compressor outlet. Water coming from a compressor will wreck any tools, make spray painting impossible and corrode the wheels when you inflate tyres.

The rain may be puddled in the inlet manifold under the carb, small amounts may be in the jets and that has to be dried out.