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      09-15-2019, 12:53 PM   #1
MikesZ4coupe
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3.0si hesitation goes away after driving, why

I have a 2008 Z4 coupe 3.0si. Starting from a stop there is a hesitation upon acceleration that goes away when the engine heats up. Why? Could it be bad injectors. Car runs very well except this hesitation.
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      09-15-2019, 01:38 PM   #2
3002 tii
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Run diagnostics and see if it pulls any codes. Then you can start narrowing things down.
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      09-23-2019, 01:03 PM   #3
Huz-Z
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Bad gas. Try a new tank and knock off with the extra spicy salsa.
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      09-23-2019, 01:53 PM   #4
Our03z4
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Could be a bad low end vanos solenoid. I have the same car and it has many odd quirks that no one can figure out. Try the British forum, have a nice long thread of engine issues with our cars that people are narrowing down.
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      10-01-2019, 11:46 AM   #5
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Quote:
Originally Posted by Our03z4 View Post
Could be a bad low end vanos solenoid. I have the same car and it has many odd quirks that no one can figure out. Try the British forum, have a nice long thread of engine issues with our cars that people are narrowing down.
+1 Mine was having the same issue. Turned out to also be bad seals on Vanos pistons.
I'd give your vanos a good refresh.
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