I am running 87 octane fuel, but under loads like hills I hear it spark knocking. I was told that this engine has a octane plug that you can remove and it will advance the timing. Is this true, and can I remove it myself. They said the knocking should go away. I just recently changed the spark plugs. Thanks Tim.
have the same problem?
Wednesday, March 25th, 2009 AT 4:54 PM