sl500 running poor

[kingerking]

Hi my 94L SL500 has suddenly started running very poor, i have had this problem before dut to water being in the distributers, i had them replaced and it ran fine. However now it seems that only 4 cylinders are running, new coils have been replaced also. please help.

 

[davidsl500]

Have you had the caps off again to check for dampness inside? Did you have the distributor cap seals replaced as well - they are supposed to be flexible but they harden with age and let in moisture causing poor running.