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#1
12-08-2003, 03:28 PM
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how do I fix my spark knock
I have a 95 blazer 4wd with 72,000mi on it. It gets the spark knock noise when I accelerate up to about 55 mph. I tried putting mid-grade fuel in it and it is still happening. I read that if it continues it will damage the engine. Can anyone help me as to what I can do? Thanks.. Nathan
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#2
12-08-2003, 04:03 PM
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Re: how do I fix my spark knock
You are likely looking at an EGR issue... is the ping severe or "trace" knock? Bear in mind also that as a vehicle ages, its octane rating requirements also rise... Ray
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#3
12-10-2003, 02:29 PM
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I agree it is more than likly an EGR problem.You should also check your timing as your base timing may be off.
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