Only upon hard acceleration while downshifting i see a bit of smoke, could old spark plugs cause that?
May 18, 2024 at 2:50 PM
Smoke on acceleration?
2007 BMW 328
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Hi,
It's unlikely the spark plugs would cause it unless they are not burning all the fuel. When you notice this, can you tell what color the smoke is? For example, dark gray or black would indicate too much fuel and blue would indicate oil burning.
Here are two links that better explain:
https://www.2carpros.com/articles/blue-smoke-from-engines-exhaust
https://www.2carpros.com/articles/engine-black-smoke
Let me know.
Joe
It's unlikely the spark plugs would cause it unless they are not burning all the fuel. When you notice this, can you tell what color the smoke is? For example, dark gray or black would indicate too much fuel and blue would indicate oil burning.
Here are two links that better explain:
https://www.2carpros.com/articles/blue-smoke-from-engines-exhaust
https://www.2carpros.com/articles/engine-black-smoke
Let me know.
Joe
May 18, 2024 at 9:00 PM
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Definitely not black or blue. White or grey but there is coolant leaks or drop in level.
May 19, 2024 at 4:51 AM
Hi,
White smoke usually indicates coolant is getting into the combustion chamber and being burned with the fuel. Take a look at this link and let me know if anything mirrors what you are experiencing:
https://www.2carpros.com/articles/recognizing-the-symptoms-understanding-a-blown-head-gasket-in-your-vehicle
Let me know.
Joe
White smoke usually indicates coolant is getting into the combustion chamber and being burned with the fuel. Take a look at this link and let me know if anything mirrors what you are experiencing:
https://www.2carpros.com/articles/recognizing-the-symptoms-understanding-a-blown-head-gasket-in-your-vehicle
Let me know.
Joe
May 19, 2024 at 7:03 PM