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My car is misfiring

Tiny
LEAHWILLSON1990
  • MEMBER
  • 1997 BMW 316
  • 4 CYL
  • 2WD
  • MANUAL
  • 104,000 MILES
Hi

I have a BMW 316i Compact 1997 model. The car has a misfiring problem. We had a compression test done on the cylinders and it was between 90-105psi across the 4 cylinders. The battery was dead so I charged it, drove about 12 miles in total and then when I got back and cut the engine off, and tried to restart it the battery was dead. Ive been having to charge the battery every few days. It has had new spark plugs, ignition leads and radiator.
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Saturday, July 23rd, 2011 AT 6:10 PM

3 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Check the alternator charge rate and get the battery load tested for condition.
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Sunday, July 24th, 2011 AT 6:19 AM
Tiny
LEAHWILLSON1990
  • MEMBER
  • 2 POSTS
Would this be causing the misfire as well then?
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Sunday, July 24th, 2011 AT 11:16 AM
Tiny
MHPAUTOS
  • MECHANIC
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No, but we need to get the charging sorted first, get it running and charging then we can look at the other problems, but you can do a scan for any unresolved fault codes, do a full tune and check for vacuum leaks.
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Sunday, July 24th, 2011 AT 11:45 AM

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