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Knocking when engines warm

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Old 12-20-2005, 02:59 PM
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Default Knocking when engines warm
anyone help me with this. I cant figure out what the hell it is. My cel came on yesterday to and i think it was codes 25 and 43. but i have to check. sould i try to switch to 93 oct. it only does it when the trucks starts off from a stop when its warm. in never does it when it sits over night in the cold.
 
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Old 12-21-2005, 02:09 PM
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Default RE: Knocking when engines warm
anyone?
 
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Old 12-21-2005, 03:13 PM
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Default RE: Knocking when engines warm
what do you mean by nock/ like spark? or like crank case nocking... assuiming you meant spark... clean the TB and run 93 and a cleaner through it .. and burn the hell outa the motor on the freeway at like 1000000 miles an hour
 
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Old 12-22-2005, 07:12 PM
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Default RE: Knocking when engines warm
Just took my 01 5.2L in at 30,000 miles and I had the same problem. Knocking (louder than a ping). Dealer said there was a TSB and did a new flash. Fixed it.
 
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Old 12-22-2005, 11:01 PM
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Default RE: Knocking when engines warm
well i put in some 93 oct. in and i hate to say this but my motor loved it. bye bye money!
 
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  #6  
Old 12-23-2005, 12:23 AM
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Default RE: Knocking when engines warm
namrehs300 I think you just got DEATH FLASHED!!!
 
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  #7  
Old 12-23-2005, 02:06 AM
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Default RE: Knocking when engines warm
rather than filling it with 93 oct all the time switch to a cooler spark plug like autolite of NGK
 
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Old 12-23-2005, 02:08 PM
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Default RE: Knocking when engines warm
new flash=bye bye power[]
 
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Old 12-23-2005, 06:57 PM
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Default RE: Knocking when engines warm
agreed about the death flash. had it in mine when I bought it couldn't pull peanuts out of poop! after the superchips all that has changed
 
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