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1986 BMW 325 BMW causes

Tiny
CINDY HART
  • MEMBER
  • 1986 BMW 325
  • 6 CYL
  • 2WD
  • MANUAL
  • 20,000 MILES
My car is flooding out, putting black smoke out the tailpipe, wont't idle, and dies. What do you think the problem is? No one seems to know what the problem is. Please help. Cindy Hart
Wednesday, March 31st, 2010 AT 12:15 PM

2 Replies

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
Send me the VIN so I can ID the car.
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Thursday, April 1st, 2010 AT 3:28 PM
Tiny
DR LOOT
  • MECHANIC
  • 2,311 POSTS
I've seen this problem caused by a bad coolant temperature sender. Your car has two of them. One runs the gauge in the instrument cluster; the other tells the computer what the temperature of the coolant is. When that one goes bad, the computer thinks that the car is operating in the arctic and it tries to compensate by making the mixture as rich as possible.

I've also seen the problem caused by an malfunctioning injector that is dumping unrestricted amounts of fuel into the engine. You can usually tell which one is bad by listening to it click with a stethoscope. A soft click means it's not closing properly.

Good Luck

Dr Loot's Assistant
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Sunday, April 4th, 2010 AT 6:54 PM

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