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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 10-01-2015, 09:12 PM   #1
FR Sports
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Cold Engine Knock/Misfire

Has anyone else noticed that the FA20 is prone to knocking/misfire when cold? My engine always seems to knock/misfire when cold after shifting into 2nd and applying moderate to heavy throttle. I would hear a loud "pop" and my engine stalls for a fraction of a second. Car is 100% stock. Is this normal behaviour or is it harmful for the engine?
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Old 10-01-2015, 09:17 PM   #2
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It's prone to do a lot of things differently when cold. Most people don't experience them because they know to go easy when it's cold.
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Old 10-02-2015, 12:07 AM   #3
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Quote:
Originally Posted by FR Sports View Post
Has anyone else noticed that the FA20 is prone to knocking/misfire when cold? ...........
Not my car's engine.

On a cold start up, I suggest you let the engine complete its start-up/fast idle dance .... then wait another 10-15 seconds, while you think about what you might have forgotten, ..... then move off slowly, until you get to the end of the block.......


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