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2006 BMW 750Li car runs rough at startup

Tiny
JTS7
  • MEMBER
  • 2006 BMW 750LI
  • 99,000 MILES
When the car is cold and started up it runs really rough for approximately for a minute and a half and the check engine light is on but after that the car runs perfectly and when the weather is colder it seems to run rougher just at startup.
Thursday, October 24th, 2013 AT 6:12 AM

3 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
That could be any number of things in the ignition or fuel system causing a cold misfire. I tend to lean toward an injector problem due to the symptoms but it would require a lot of testing by a tech to confirm anything like that or even to isolate which cylinders.
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Thursday, October 24th, 2013 AT 6:25 AM
Tiny
JTS7
  • MEMBER
  • 2 POSTS
I thank you very much for your, response at least this gives me some kind of an idea and I will have to get it to a tech.
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Thursday, October 24th, 2013 AT 6:37 AM
Tiny
WRENCHTECH
  • MECHANIC
  • 20,757 POSTS
Make sure you haven't overlooked the tune up basics. At that mileage you should have changed the plugs and wires (if it has them)
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Thursday, October 24th, 2013 AT 6:45 AM

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