Mercedes e230 japan was starting well and cuts spark on1#4 cylinders after a second .scaned with a laucher x431 ,cleared all stored codes remained with one fault misfire on 1#4 reason ignition stage 2 current level not reached.swaped the coils no change .later on it changed ,cutting all cylinders spark comes goes on both coils unless i remove the connector to 1#4 it will run 2#3 continuously. cleared err codes again ,runs with all cylinders fo about 3 minutes and starts shaking again.NOW IT STARTS AND CUTS BOTH SPARK AND INJECTORS IN ABOUT A SECOND i dont know what else to touch

SOURCE: 99 buick Lesabre

hey thanks for bringing me up to speed. ive been working on many other problems but with your great explanation i remember.
we need to check the compression on that cyl. and compare it to the compression on 2 other cylinders your choice.
but before you do this get a can of carb cleaner . and with the car idling spray around the intake manifold in the area of #6 cyl. what we are looking for is a small vacuum leak that would also act like this. with the engine idling and spraying around the intake the engines idle sould not change and if it does when you spray you have an intake leaking.
let me know how it turns out.
later
paul

SOURCE: Cylinder #1 misfire on a Ford Taurus SHO

do a compression check. if you have a low compreeion reading below 80psi you need to do a head job. question is the iol milky on the dip stick?

SOURCE: misfire in cylinder 1 2001 mercury sable

Next change swap the injector with another and see of the problem moves.  If it does it's a bad injector.  

SOURCE: Car is running rough, afetr spark plug change

make sure no fuel is down in the spark plug ports it will short out the spark

James Williams

• 115 Answers
• Posted on May 21, 2009

SOURCE: Misfire with error codes P0300,P0302,P01303, P0102, P0748

Have you tried new Spark Plugs? Also after removing the plugs.
Take a paper towel and roll it up so it is like a long thick pencil. Stick that down the hole the spark plus came out of. Just to clean the moisture out. Also blow some compressed air down the hole.
Make sure all the moisture is out. The put the plugs in.
When you wash you car. Be careful if you wash the engine.
Dont let water get in to the plug holes..