cause of knock

 
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Old 08-03-01, 01:08 PM
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KZ1
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cause of knock

What would cause my knock readings to all ob a sudden increase by about 10. when I first plugged in PFC I was getting neer higher than 60, now with the intercooler, adn a little while later I am getting mid 70's around 3k RPM. I can;t see how an intercooelr could do this.

What could cause and increase like this?
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Old 08-03-01, 03:21 PM
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Do you live in cali and had to start using 91 octane instead of 92? Just a thought.
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Old 08-04-01, 07:44 AM
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no, I am in Georgia with 93 octane, air/fuel ratio is hard to tell on patial throttle around there becasue of the air pump. on full throttle I am like .93 so plenty of fuel.
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Old 08-04-01, 07:49 AM
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ever cleaned those injectors?fuel filter?
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Old 08-04-01, 05:05 PM
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new filtre, but never cleaned the injectors, I am just kidna nervous to drive it. it has had iinjectro treament by the previous owner, but not in 15k miles. I'll am going to ttry it though.
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