Question about 2008 BMW 328xi
Engine runs smooth at idle and when reved up w/o load. When driving under hard acceleration there is a misfire. Plugs, cap, are new.wires are not new .
I would check the coils...In have seen some fail at under 80k miles but mostly you can get well over 100k miles... I do not know if you have a great scanner or not, but what I do is use a scanner and run a power balance test and this graphs the cylinders performance and coil output.Also you can try cranking the car and let it get to operating temp,then go to each coil and disconnect it,you should have a rpm drop,if you do not get the rpm drop then that coil is bad.Last if you can test the resistance of the coil with a multimeter...Make sure you have the car scanned with a good scanner 1st to point you in the right direction.
Posted on Apr 15, 2014
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Mar 14, 2013 | Cars & Trucks
Aug 21, 2012 | 1997 Chevrolet Lumina
Apr 28, 2010 | 2003 Ford F150 Regular Cab
Mar 25, 2010 | 1989 GMC Sierra
Jan 21, 2010 | 2003 Ford Expedition
Oct 18, 2009 | 1995 GMC Safari
Jun 30, 2009 | 1998 Honda Civic
Mar 12, 2009 | 1999 Jeep Cherokee 4WD
19 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: