N52 Bosch replacement ignition coil problem

kalasend · 05-31-2014, 03:21 AM

Hi,

Video is better than words:

This is not for a 3-series sedan but my X3's N52 engine is used in some E90 cars I believe...so I just want to ask here as well.

I just got these replacement ignition coils by Bosch from Pelican and change them on my '07 X3. After that, the engine can start but would stop within a few seconds. I then put back the old coils and the engine ran fine again.

As it seems, the problem has to do with the design of these new replacement coils. The boot for the spark plug is just way too air-tight, such that when inserted, the spark plug would get pushed out. The coils themselves aren't bolted to the engine and so the vibration from the engine has the tendency to push the coils out.

Note that the older, OE ignition coils(also by Bosch) have a tapered groove such that they can hold the top tip of a spark plug. Bu the newer coils don't have this groove to hold spark plugs

Any idea?
Thanks. Ben

DJtoad · 05-31-2014, 07:14 AM

Take a look at this thread if you haven't come across it already:

Strange issue with N52 ignition coils PN 12-13-7-594-937

05-31-2014, 03:21 AM	#1
kalasend Registered 0 Rep 2 Posts Drives: 2007 X3 Join Date: Jan 2014 Location: 95035 iTrader: (0)	N52 Bosch replacement ignition coil problem Hi, Video is better than words: This is not for a 3-series sedan but my X3's N52 engine is used in some E90 cars I believe...so I just want to ask here as well. I just got these replacement ignition coils by Bosch from Pelican and change them on my '07 X3. After that, the engine can start but would stop within a few seconds. I then put back the old coils and the engine ran fine again. As it seems, the problem has to do with the design of these new replacement coils. The boot for the spark plug is just way too air-tight, such that when inserted, the spark plug would get pushed out. The coils themselves aren't bolted to the engine and so the vibration from the engine has the tendency to push the coils out. Note that the older, OE ignition coils(also by Bosch) have a tapered groove such that they can hold the top tip of a spark plug. Bu the newer coils don't have this groove to hold spark plugs Any idea? Thanks. Ben
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05-31-2014, 07:14 AM	#2
DJtoad Captain 58 Rep 665 Posts Drives: 2010 535i M Sport Join Date: May 2008 Location: Ellicott City, MD iTrader: (2)	Take a look at this thread if you haven't come across it already: Strange issue with N52 ignition coils PN 12-13-7-594-937 __________________ 2010 535i M Sport - Platinum Gray/Dakota Black/Anthracite Bamboo 2016 Jaguar F-Type S AWD - Polar White/Cirrus
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