Testing Coils and plugs

[jj7]

Hi all,not much idea of how to test the coil connector to the plugs, could someone tell me how its done,i`m getting some hesitation on take off on my 94,525i. Sometime ago i noticed rubber rings on 2 different spark plugs and i suspect that the connector is not fitted well on some of the plugs...
TIA/ jj

[632 Regal]

probably time anyways, cheap items.

[jj7]

probably time anyways, cheap items.
Jeff, i agree with you on the replacing,but what bothers me with the coils to be exact is that they are rather new, when i take them off the spark plug, and put them back again i feel some of them make some type of resistance;ie, the spring like wire inside the boot its touching the spark perfectly, while,other coils fit on the spark with no resistance at all,as if the spring inside the boot is not in ful contact with the plug....
i tried to do tests on my own but couldnt get any readings...you know....so that what made me wonder how this testing is made...in one earlier posts one thread mentioned that but forgot where to locate it...i think that posting was related to one of the friends in this forum who tested the MAS and gave good results,but turned out to be faulty later on...but don`t know who ????

I appreciate your time and effort....

[632 Regal]

When I first got me car I had a miss...replaced the injectors, coils, plugs etc. Still had a miss and hesitation, did NOT want to see if the engine was Nikasil at that point. Found a huge leak in the intake hose, took care of the hesitation but the miss was still there, only at idle and more pronounced with the air on. Last thing I did was replaced the boots and the miss was gone...wasted a LOT of money before doing the boots.

[jj7]

When I first got me car I had a miss...replaced the injectors, coils, plugs etc. Still had a miss and hesitation, did NOT want to see if the engine was Nikasil at that point. Found a huge leak in the intake hose, took care of the hesitation but the miss was still there, only at idle and more pronounced with the air on. Last thing I did was replaced the boots and the miss was gone...wasted a LOT of money before doing the boots.
yeah man thats what i mean, i have the 100% exact syndrom in my engine, the thing is am taking it step by step, am all on electrical now,found 2 faulty ignition wires coming from the ecu,too much resistance...i still bet on the coils not in full contact with some of the plugs but can`t determine which is which for that i wanted to test them to sort them out...

[632 Regal]

after you figure out which 2 are bad and replace them, one month from now youll have a couple more giving you ****. Think of it like replacing 1 bad plug at a time.

[Bellicose Right Winger]

I'll be happy to pay shipping on any old or suspect coils so I can see if the following test works. Any volunteers?

http://www.bimmer.info/forum/showthread.php?t=2707&highlight=ringer

Paul Shovestul