Everybody pls Help for my W126 280SE
 

yesterday i send my car to car wash centre,They clean up my engine with the water pump to spray the engin.Now the engine is very clean now.After 1 day i drive,when i slow down my car then engine will dead.when i started again without push oil the engine will dead also.anybody can help for me please!!!!!!!!!Thank You

For starters remove the distributor cap and dry it all out.

And under the coil cover, too......

Then park it in the sun with the hood open and let it get good and dry.