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EFI Sportster Motorcycle Talk (2007 and up) For 2007 and above Sportsters

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efi sportster, engine noise, nightster, pinging

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  #1  
Old 21st March 2010
brich brich is offline
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Default Engine Pinging

I recently put forward controls on my 08 Nightster. In order to this this I had to remove the forward exhaust. I installed a new exhaust gasket, but it sounded like it had a leak. I installed a second new exhaust gasket, the bike sounded a lot better, however I took it out for a ride the other day (first real ride since putting on the forwards) and it sounds like it has a ping coming from the rocker covers. When I accelerate it gets louder and faster, when I pull in the clutch it seems to go away?????? Any help would be appreciated.
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  #2  
Old 22nd March 2010
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Originally Posted by brich View Post
I recently put forward controls on my 08 Nightster. In order to this this I had to remove the forward exhaust. I installed a new exhaust gasket, but it sounded like it had a leak. I installed a second new exhaust gasket, the bike sounded a lot better, however I took it out for a ride the other day (first real ride since putting on the forwards) and it sounds like it has a ping coming from the rocker covers. When I accelerate it gets louder and faster, when I pull in the clutch it seems to go away?????? Any help would be appreciated.
I assume you made no other changes during the install (to something that might effect tuning?).

How about the front 02 sensor, wiring intact and connections tight?

How about the heat shield? Properly installed, nothing loose or damaged?
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  #3  
Old 22nd March 2010
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I have a 2007 1200L with a D&D Fat Cat 2-1 on it and I experience the same pinging. I work in a Harley dealer with many Harley certified techs and the first time I experienced this I asked them right away. They said it isn't anything that hurts the bike but seems to occurs a lot in FI sportys and they haven't found anything that truly fixes the noise yet. This was about a year ago. They said it was nothing that was hurting the bike either. I just left it alone my bike has been running just fine since I asked them about it.
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  #4  
Old 22nd March 2010
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Quote:
Originally Posted by Speedy View Post
I have a 2007 1200L with a D&D Fat Cat 2-1 on it and I experience the same pinging. I work in a Harley dealer with many Harley certified techs and the first time I experienced this I asked them right away. They said it isn't anything that hurts the bike but seems to occurs a lot in FI sportys and they haven't found anything that truly fixes the noise yet. This was about a year ago. They said it was nothing that was hurting the bike either. I just left it alone my bike has been running just fine since I asked them about it.
Ping is never acceptable.

This is a fine example of why I never trust dealers. The detonation is a combination of the stock o2 feedback loop in the ECU is absolute junk. The bike has way too much timing in the midrange. These bike do not have enough cooling so you have to run them somewhat fat or around 14.0 AFR at part throttle.

Lots of people throw loud pipes on it and wind up just not being able to hear the motor trying to melt down. Power commander just throws butt loads of fuel at them.

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  #5  
Old 22nd March 2010
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Default Could it be the fuel?

This is only hear-say, but refineries supposedly used to put more volatiles in their mix during the winter for easier starting, at least back when all vehicles had carburetors. Anyone caught with a tank of winter gasoline on a warm spring day might hear some pinging from the more volatile fuel.

My knowledge is not the most current, but if gasoline is still blended that way, the weather could explain your problem. Did you fuel up immediately before the road test? I really hope its as easy as that for you.
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Old 23rd March 2010
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I appreciate the insight. Thank you very much for saving my engine.
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Old 23rd March 2010
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I agree with Whittlebeast.

Make sure that that the four nuts that hold the exhaust pipes to the cylinder heads are torqued properly. A lot of people tell you just hand tighten them and then you end up with exhaust leaks and poor performance.
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  #8  
Old 23rd March 2010
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I'm not surprised to hear a rubber mount pings. If the stock plugs are equivalent to NGK 7, with 9.7:1 I'm not surprised. My bike has 10.5:1 with pretty good chambers, and mine pinged like a biache with 7's. 8's were a lot better but still had a little. It took 9's to get it to stop.

I also agree stock Sportsters have too much advance in the ignition curve, and run too lean.
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Old 25th March 2010
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I have new fuel in the bike and the exhaust nuts are nut. I am however going to change out the plugs. I was talking to a buddy of mine and he also mentioned something about the plugs, so I will try that.
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  #10  
Old 25th March 2010
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Quote:
Originally Posted by biknut View Post
I'm not surprised to hear a rubber mount pings. If the stock plugs are equivalent to NGK 7, with 9.7:1 I'm not surprised. My bike has 10.5:1 with pretty good chambers, and mine pinged like a biache with 7's. 8's were a lot better but still had a little. It took 9's to get it to stop.

I also agree stock Sportsters have too much advance in the ignition curve, and run too lean.
Biknut which spark plug do you suggest
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