Spark Knock, Anyone??
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Tourer
Joined: Mar 2009
Posts: 253
Likes: 1
From: Virginia Beach
Spark Knock, Anyone??
4th towards the very end, and 5th at a little over 2/3 of the revs, I get this nice spark knock sometimes. Am I the only one???
Anybody else just cracked it open on the highway and heard the "tinking" sound from the engine, if so how did u make it go away??? Im just hoping its not gonna require a re tune.
And help would be great.
Allen
Anybody else just cracked it open on the highway and heard the "tinking" sound from the engine, if so how did u make it go away??? Im just hoping its not gonna require a re tune.
And help would be great.
Allen
Road Master
Joined: Jun 2009
Posts: 933
Likes: 1
From: Indianapolis
Higher octane gas or a richer afr in those regions are the easiest solutions. Are you sure it is engine knock/pre-detonation/ping (everyone has their own word for it, it seems) and not just the loud valve train getting even louder when it moves faster?
Road Master
Joined: Jun 2009
Posts: 933
Likes: 1
From: Indianapolis
Good point. Do you have a fuel management device? If so I would be trying to see if you could richen up that area of the fuel map.
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Tourer
Joined: Mar 2009
Posts: 253
Likes: 1
From: Virginia Beach
yeah, I've got fuel management. It has a fuel pack, which has always done just fine for me, and judging by the spark plugs themselves, it is doing it's job well. I wanna say it happens mostly above (what sounds like) 5k in 4th and above 4k in 5th. I guess im goin to have to call V&H and get some new numbers. Ill re- post when I know more. Granted the easiest fix would be to go easier on the throttle, but i find the fun factor lacking there.
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Thread Starter
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Tourer
Joined: Mar 2009
Posts: 253
Likes: 1
From: Virginia Beach
As I understand it, ignition happens before TDC anyways. I would think that if the ignition was heppening too far before TDC it would reduce the power. Like the engine was trying to run in reverse. I haven't noticed any drop in power anywhere across the band but hey, its definitely worth looking in to. Thanks for the advice, i would have never thought of that.