Question about 2004 BMW 745Li

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BMW 745li has 200,000 miles runs smooth but...

...when idling for 5mins white smoke begins to come out of exhaust.

Posted by Anonymous on

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  • BMW Master
  • 1,977 Answers

White smoke usually means water is getting in the piston area. Could be head gasket gone.

Posted on Apr 01, 2015

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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rylee_smith
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SOURCE: white smoke from the exhaust when I start the car

Hi!

What type of smoke can you see---

white smoke-
If you see a wispy, lingering white smoke that has a bittersweet smell, this is an indication that your car's engine coolant is leaking into the combustion chambers. This may be due to a leaky head gasket, or in a worst case scenario, a cracked cylinder head.

Make sure to take your car to the shop right away to get it fixed.
Thick white smoke---
If your vehicle is belching white smoke upon start-up, it is a sign that transmission fluid is entering the combustion chambers, possibly though a vacuum tube that connects the engine to the transmission.
This type of smoke can be confused with the normal puff of steam during start-up. If you are not sure, have your car inspected at the shop.

Blue/White Smoke--
A blue/white smoke is an indication that oil is being sucked into the combustion chambers through the valve guides. A quick fix for this problem is by replacing the valve seals. Valve seals are small, umbrella shaped pieces of rubber.

Do rate the solution.

Thanks
Rylee.

Posted on Feb 09, 2009

  • 6982 Answers

SOURCE: 325i BMW emitting white smoke

You are smelling burning antifreeze. likely a head gasket but only testing will determine that for sure...Do not drive it. get it to a shop or more damage is likely.

Posted on Mar 18, 2009

tse22
  • 103 Answers

SOURCE: brake warning light is on for 2002 bmw 745i.

The brake pads have sensors in them, when the pads get worn down to the sensor the light comes on letting you know its time to replace. this happens well before the pads are completely gone to reduce wear on the rotors. You should have the brakes replaced and the sensor also.

Posted on May 17, 2009

  • 5 Answers

SOURCE: 1994 bmw e36 325 tds

There is a company in Northern Ireland called Exact Engineering that can convert your dual mass flywheel to single mass using a complex engineering process ending with a finely balanced guaranteed single mass product. They have a complete courir service.

You can see their website at www.exact-spec.com and contact them at info@exact-spec.com

Posted on May 29, 2009

  • 23 Answers

SOURCE: bmw 320d engine shaking

You have blown the oil rings.

Posted on Aug 29, 2009

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