2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
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Old 11-09-05, 12:45 PM
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The high rev detonation I've heard made a rattling sound.

I have heard low rev single pings as the knock sensor pulled the timing before the detonation could continue.
The S5 knock sensor works fairly well below 4K.

My guess for Archangel's engine is pre-ignition.

Either way, he's on it.
Old 11-09-05, 12:57 PM
  #27  
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Originally Posted by Wankel7
You must not care about your engine But rock out on that oil change
James
i do care about my engine, thats why i never push my car hard, i drive it gingerly around for now, it's being parked in a week or so....



the only reason i had it on the dyno to make this noise once and to see if it was fuel related, or what was going on all together....

i did make 2 good pulls with no noise aswell....


BTW, the timing is dead on with the primaries while the trailing coils are retarded a few degree's....

Last edited by Archangels; 11-09-05 at 01:14 PM.
Old 11-09-05, 01:08 PM
  #28  
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Originally Posted by Ottoman
is that what ping sounds like?

i thought it was more like popcorn/crunching sound

u know it reminds me of 2 billard ***** hitting each other... very echo'y also...

if the compressoer blad was hitting the housing.. wouldn't the sounds be much "closer" together it almost sounds like something is "bouncing"

Well he said it doesn't happen all the time, which makes me think it's random. If it is possible that it can spin sometimes without hitting it at all then it's possible it can hit it, miss a couple times, then hit it again.
Old 11-10-05, 12:16 AM
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http://members.shaw.ca/matrix9eleven/Goodrun1.divx

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Old 11-10-05, 12:35 AM
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that sounds good i cant wait till i get on the dyno
Old 11-10-05, 05:00 PM
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Well - I found mine.

Worn out plug wires measured 18K & 22K ohms. New ones were 8K.

Not only was I getting a high RPM miss, but it was upsetting things enough to give a random knock.
Old 11-10-05, 11:53 PM
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my plugs and wires are both brand new....

actually almost everything is brand new, fuel filter, injectors, pump, etc etc....




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