2002 x5, engine will turn but no start, thought of replacing spark plugs, long time had passed since last replacement, got all new bosch platinum +4 plugs, kept all coils on same place as they were before, but noticed the coils seem to not hold on to the plugs, I can push them down but when released they come back up about 1/8", thightened all colis down and tried starting, engine still not starting, it will turn for about 3 to 5 seconds and stop, where as before replacing the plugs it would turn untill I turned key back off, could this be related to coils not clicking into the plugs, or any other Ideas???