Help identifying this engine noise
Help identifying this engine noise
I'll be the first to admit I am far from a gearhead. Dunno much about the inner workings of the engine and prefer to keep it that way. Any other way and I would get myself in trouble.
I have this noise that I am hearing that just doesn't sound right. Sounds like it is mostly coming from the front jug. It happens at idle when I blip the throttle hard or during heavy acceleration at lower RPM's after the engine is warm. Like in the 2200-2500 range. And when going up steep grades at lower RPM's It gets more prevalent when the engine is hotter. The best way I can describe the sound is a quick metal on metal clanging. Like if you were to say put a knife blade in the blades of a metal fan. It is a quick sound and only does it during the above described conditions. I know there are some of you that can listen to an engine and pick up what is going on by the sounds it is making.
So is this normal or no???
I have this noise that I am hearing that just doesn't sound right. Sounds like it is mostly coming from the front jug. It happens at idle when I blip the throttle hard or during heavy acceleration at lower RPM's after the engine is warm. Like in the 2200-2500 range. And when going up steep grades at lower RPM's It gets more prevalent when the engine is hotter. The best way I can describe the sound is a quick metal on metal clanging. Like if you were to say put a knife blade in the blades of a metal fan. It is a quick sound and only does it during the above described conditions. I know there are some of you that can listen to an engine and pick up what is going on by the sounds it is making.
So is this normal or no???
Running either 93 or 94 octane all of the time. Running a pre-mapped PC-V from Fuel Moto.
Banned
Joined: Mar 2007
Posts: 3,706
Likes: 7
From: Woodstock, Ont , Can
Sounds like the compensator is loose or spring pack is toast in the unit. When taking off from a light especially when cold there could be some knocking, similar to a rod knock as well. If it is the comp, I recommed the newer SE big twin comp since the stock one is really not well designed or durable.
Ron
Ron
Last edited by rbabos; Jul 12, 2009 at 03:18 PM.
Ultimate HDF Member
Joined: Feb 2007
Posts: 7,663
Likes: 7
From: Northeast Ohio
I too think it is pinging. You will only hear a quick tink once or twice as the engine knock sensor is picking it up and then pulling timing automatically which ends the ping. Roll-on in the 2000-2250 range is one of the hardest areas to eliminate pinging entirely as it is high load and tradionally has a lot of timing advance. If you know what you are doing, you could try adding just a bit of fuel or better yet would to pull a couple of degrees of timing in that area, or, DOWNSHIFT !
Ultimate HDF Member
Joined: Feb 2007
Posts: 7,663
Likes: 7
From: Northeast Ohio
The quick "tink" when you blip the throttle is an indication of lean or too much timing. Is the accelerator pump function of the PC activated. This would throw a bit more fuel in when you open the throttle quickly and may eliminate the ping. If it is already activated, then as I said earlier, you need to modify the PC map with either a bit more fuel, or a bit less timing.
I am not a PC guru, but the way to fix a ping is the same no matter what tuning system you are using.
Ok, I will add DOWNSHIFT and DONT BLIP THE THROTTLE...
I am not a PC guru, but the way to fix a ping is the same no matter what tuning system you are using.
Ok, I will add DOWNSHIFT and DONT BLIP THE THROTTLE...
Trending Topics
The quick "tink" when you blip the throttle is an indication of lean or too much timing. Is the accelerator pump function of the PC activated. This would throw a bit more fuel in when you open the throttle quickly and may eliminate the ping. If it is already activated, then as I said earlier, you need to modify the PC map with either a bit more fuel, or a bit less timing.
I am not a PC guru, but the way to fix a ping is the same no matter what tuning system you are using.
Ok, I will add DOWNSHIFT and DONT BLIP THE THROTTLE...
I am not a PC guru, but the way to fix a ping is the same no matter what tuning system you are using.
Ok, I will add DOWNSHIFT and DONT BLIP THE THROTTLE...
Thanks for the advice Dalton. Gonna give Jamie a call since they set the PC up to see if he has any words of advice.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Verdad Gallardo
8 Best Harley-Davidson Motorcycles Ever
Pouria Savadkouei
10 Worst Harley-Davidson Motorcycles Ever
Pouria Savadkouei
Killer Custom's Jail Break Is The Breakout That Refused to Blend In
Verdad Gallardo
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Verdad Gallardo
Harley-Davidson Reveals Super Cool Cafe Racer Concept
Verdad Gallardo
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Verdad Gallardo
10 Motorcycles You Should Never Buy
Joe Kucinski
10 Things Harley-Davidson Needs to Fix in 2026
Verdad Gallardo
Intermediate
Joined: Feb 2009
Posts: 39
Likes: 1
MonsterMile,
Let me know what you find out, have same thing and sounds like same setup from Jamie. Just really noticed it the most this past weekend. Been looking for something on-line and stumbled across your post.
Keep us all posted.....
Thanks..
Let me know what you find out, have same thing and sounds like same setup from Jamie. Just really noticed it the most this past weekend. Been looking for something on-line and stumbled across your post.
Keep us all posted.....
Thanks..
