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15:25:57 - 04/24/2024
General Dakota Board
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mpil1
GenIII
 
1/11/2003
18:06:53
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 Subject: Spark Knock
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Message:
What is spark knock??? I've gone thru the motions of doing a search for it but it turned up like 20 pages of posts, none of which really answered my question.
Mpil1
'02 SXT CC, 3.9L, 5-spd, 4x4, Trac-Loc...Not enough Mods Yet!!!
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DakotaDan
*GenIII*
1/11/2003
18:24:20
|  RE: Spark Knock
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Message:
Definition: This is the pinging or rattling noise sometimes heard during acceleration that indicates detonation is occurring inside the engine (See Detonation). Spark knock can be caused by a variety of things including using low octane fuel, over-advanced ignition timing, too much compression (often due to a buildup of carbon in the combustion chamber), by an inoperative EGR valve, and/or by too much heat. If switching to a higher octane fuel doesn't cure the problem, the cause should be investigated because prolonged or heavy knocking can damage the engine.
DETONATION
Definition: An unwanted explosion of the air/fuel mixture in the combustion chamber caused by excess heat and compression, advanced timing, or an overly lean mixture. Also referred to as "ping".
Dan
Next Time You Think You're Perfect
~~~~~Try Walking On Water~~~~~
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mpil1
GenIII
1/11/2003
18:26:30
|  RE: Spark Knock
IP: Logged
Message:
thanks, just did a Yahoo search and found that exact definition for both lol.
Mpil1
'02 SXT CC, 3.9L, 5-spd, 4x4, Trac-Loc...Not enough Mods Yet!!!
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