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From years of quarter car washing engines, I found that the best method to resolve a no start due to water in electrical connections besides waiting a day, is simply pull the connector and liberally spray with WD40. The WD40 will displace the water and it should start right up. Now whenever I spray off the engine, I make certain to have a can of WD40 close by.
WD40 is a good all around product. In the beginning of time I did the car wash on engine thing. That ended as the price of the subject grew. I like a orange smelling spray on product that you can hose off. Gunk? On my 911....whatever I can reach with my hand and a cloth loaded with some sort of mild cleaner is good for me. Im mean were are talking about 3 square feet.