Hi, I have a BMW e46 it is producing a blue smoke smelling unburned fuel. What would be the reason?
Sep 6, 2018 at 11:56 AM
Blue smoke smelling unburned fuel
2002 BMW 320
PHINEAS
- MEMBER
- 1 POST
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JACOBANDNICKOLAS
- ✓ASE Certified Mechanic
- 110,193 POSTS
Hi and thanks for using 2CarPros.com.
Blue smoke from the exhaust indicates oil being burned in the combustion chamber. The unburned fuel smell may indicate too much fuel being injected which can be the result of many things.
Take a look through this link. It discusses causes and ways to repair. Also, if the check engine light is staying on when running, have the computer scanned to find codes. Most parts stores will do it for free.
https://www.2carpros.com/articles/excessive-smoke-coming-from-the-exhaust-pipe
If interested, here is a link showing how to use a scanner:
https://youtu.be/YV3TRZwer8k
Let me know if this helps or if you have other questions.
Take care,
Joe
Blue smoke from the exhaust indicates oil being burned in the combustion chamber. The unburned fuel smell may indicate too much fuel being injected which can be the result of many things.
Take a look through this link. It discusses causes and ways to repair. Also, if the check engine light is staying on when running, have the computer scanned to find codes. Most parts stores will do it for free.
https://www.2carpros.com/articles/excessive-smoke-coming-from-the-exhaust-pipe
If interested, here is a link showing how to use a scanner:
https://youtu.be/YV3TRZwer8k
Let me know if this helps or if you have other questions.
Take care,
Joe
Sep 7, 2018 at 6:19 PM
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