engine knocking during acceleration when hot

2009 SUZUKI LIANA
35,000 MILES • 4 CYL • FWD • MANUAL
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IQBAL1
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  • 1 POST
knocking sound coming during acceleration but only in hot.
1. cold engine is running fine and
2. With Hi octane running fine even in hot condition.

Possible causes?
Dec 6, 2010 at 5:48 PM
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KHLOW2008
  • ✓ASE Certified Mechanic
  • 41,814 POSTS
  • ASE Certified Mechanic
Without understanding the type and source of the noise, it is not possible to provide any comments.

Is it consistent with engine speed?
Does it occur at a constant rate?
Does it change with abrupt or constant throttle opening?
Dec 6, 2010 at 9:03 PM
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USMAN900191
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  • 1 POST
I have the same problem. It is consistent with the engine speed as well as if i accelerate it in nuetral. Moreover, i have also get it fueled with hi octane, the knocking becomes less but its still there.

kindly guide me what to do.
Dec 21, 2015 at 10:57 AM
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