I have a '92 LS400 with 130k that runs perfectly, that is until this weekend when I cleaned the engine. I used the solvent and pressure sprayer at the local car wash. I do this twice a year to clear the dust, I live in the desert. I've never had a problem before. This time it started missing on the way out of the car wash. I let the car sit in the sun, ran it up to temp thinking that it would "DRY" out. Well it's been 3 days and 100 miles and it still misses. I've checked for obvious problems, vacum lines, water in the airclear, loose connections, etc with no luck. Does anyone have any ideas??