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1995-2002 Range Rover P38A
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166 Posts
Discussion Starter #1
I have a 2003 4.4 with about 98k miles mostly highway. For the last 20k miles I have noticed a valve knock upon acceleration after the car is warmed up - about 15 minutes into driving. Is this just the quality of gas in Miami or is the car telling me it needs a valve job? I don’t notice any loss of power or smoke issues - just this crazy knocking upon harder acceleration. Any thoughts are appreciated.
 

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2010-2012 Range Rover MkIII / L322
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560 Posts
Mine only knocks on the start up the "Vanos knock". It could be the gas or the viscosity of oil you are using with the heat down there.
 

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1995-2002 Range Rover P38A
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166 Posts
Discussion Starter #3
I beleive I am using a 50 weight oil - could the cause really be oil viscocity and high heat? Using high octane or regular gas seems to make no difference at all with the knocking.
 
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