I've got a problem with my Mercedes 300E, 86year. When i try to start the car, sometimes it wont start the first time then i have to try second time and it starts. What can it be and how to fix it( i have changed spark plugs recently and used injection cleaner additive several times).
Second problem is that when i start the car the blue smoke comes out at first. When the engine gets warm there is no blue smoke anymore. Anyway engine runs good.Someone told me that might be valve seals that need to be replaced. Do this procedure requires engine head block to be removed or it can be fixed without head removal. How expensive this can be...? what to expect?( more worried about thast, hehe)