Having problems with your BMW L7 ?

White smoke from the exhaust when I start the car

\015 Once the smoke clears the car runs great.\015\012\015\012My car is a 1999 740iL with 140,000 miles.\015 Posted / edited by AnonymousUser on : 23-04-2018

Answers :

Hi!
\015\012
\015\012What type of smoke can you see---
\015\012
\015\012white smoke-
\015\012If 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.
\015\012Thick white smoke---
\015\012If 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.
\015\012
\015\012Blue/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.
\015\012
\015\012Do rate the solution.
\015\012
\015\012Thanks
\015\012Rylee.
Repair Help & Product Troubleshooting for BMW L7

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