| Author | Message | ||
     Jpgrego |
I got my new xb12ss a couple weeks ago and I've been following the break in rules almost to a t... that 3000 rpm limit is pure torture. I'm thinking I may be imagining problems because I'm not used to a Harley engine but I figured I'd ask to make me feel better. It cranks fine and holds and idle no problem though a little lower than i expected... more like 900-1000rpm. But the fuel pump sound (the one when you flip the kill switch to run before cranking it) seems really loud... I can hear it over the engine at any speed under 35 or so mph. It seems to come and go at low engine speeds in time with the engine pulses and it seems to run fine other than it will occasionally stutter if I crank it open from low rpm. It also seems to have a weird hesitation when held at a consistent rpm at low speed but I have a feeling that's the nature of the beast. Is the fuel pump sound normal because it just seems a little strange to me (all my previous bikes were carbed). Thanks. Patrick | ||
| Tommy_k |
This is a long shot, and no offense intended, but there is a cooling fan that runs a lot when the bike is new. Could that be what you're hearing?? I came off an import, and the fan noise freaked me out at first. If it's truly the fuel pump noise, I can't help you. On my 06 Ss, I can't say I remember hearing it when I had a stock pipe on...Anyone? fwiw, TK | ||
| Bosh |
I don't notice the fuel pump at all when the bike is running. Only when the ignition is first turned on. The fan is VERY loud though. All of the other things you noticed are, like you said "just the nature of the beast". I have the XB12X but I don't think there is much difference. | ||
| Truk |
Fuel pumps can be bit loud compare to other bikes. Also, some Buells seem to be a tad louder than others. Also, the sound can be more noticeable as the bike gets lower on gas. The pump is mounted into the frame, the gas is held in the frame. I guess the gas is absorbing some of the sound, when it gets low there is a chamber to amplify the sound As the miles came on my bike, the fan ran less and the pump doesn't seem as loud. Could your slight hesitation be from lugging the engine a bit. I know you are following the break in, and I break my bikes in right too. I would find it hard to run the bike at 2,500 for the first 50 miles than under 3,000 RPMs till 500 miles. Especially the 2500 RPMs can be right about lugging the engine for my bike I have a XB9R and it seems I am usually running my bike at slightly higher RPMs when I am just cruising. Interestingly enough, one way I can tell, besides the engine sound, is that my mirrors vibrate when I am in too low of a gear for the RPM. Right gear and RPM no vibration in the mirrors I have read articles where journalist have complained about vibrating mirrors. I have wondered if they were in too low a gear for the RPMs As the miles came, mine got better. My bike is stock. I do not have any hesitations. | ||
| Jpgrego |
The sound is definitely not the fan, the fan is loud and really surprised me the first time I heard it. The sound I'm hearing is exactly the same when you first flip on the kill switch and the fuel pump builds up pressure in the lines. I've only got a couple hundred more miles of break in so maybe the stumbling will get cured by opening it up a little more. The bike is low on gas at the moment so maybe I've been noticing the sound more. I'll top it off today and see if it makes a difference. Thanks. Patrick | ||
| Lovematt |
The stumbling could be from several things: TPS Reset needed Timing Plugs/Plug Wires Fuel I know on my bike the TPS Reset was needed after the first 500 miles and again at about 12,000 miles. I am due again because the idle is starting to jump around again and I just changed the plugs and wires and checked the static timing so I know that isn't it. There is also a slight hint of hunting at low throttle inputs at low speeds too. Last time I had the TPS Reset both of these problems went away completely. (Message edited by lovematt on January 14, 2006) | ||
| Rkc00 |
idle is starting to jump around. There is also a slight hint of hunting at low throttle inputs at low speeds too. This is happening to mine also. Mike Long Island, NY 06 XB12X | ||
| Tourguide |
I bought an 06 XB12Ss in December and have been able to ride 350 miles with the cold slowing my break-in process more than I would like. Its some what boring to hold to the break-in procedures but, I am following them per the book (agree with the torture commit). The fan does run quite a bit and is very loud even with a full face helmet however, I have not heard any other loud noise that concerns me. I do have and, have ridden a Hertitage Softail Classic for the last nine years so I am used to all kinds of noise, its like music to my ears at this point. | ||
| Jerseyguy |
On both my BB9S and my new XB12Ss I could/can occasionally hear the fuel pump. It comes and goes. The noise have never manifested itself in any driveability problems so my advise is to simply ignore it. Both my bikes want to idle at a crack over 1000 rpm. Anything higher and the idle would take some time to settle down - anything lower and it would hesitate when starting off. As far as breaking in an engine goes, that's a personal opinion. There is at least two basic schools of thought on it and there's no point in arguing the merits of each. A Google search will produce a wealth of info on the topic. I've always broken them in like I'm going to run them which is generally hard. I've never had a problem but that doesn't make it right or wrong, but only how I choose to do it. | ||
| Davy_boy |
My fuel pump seems to make a bit of noise and some days it's louder then others . Don't think it's much to worry about . I read on another site that the pump noise was normal . Not really sure who is right but I would not worry about it . | ||
| Jpgrego |
Filling up with gas really made it a lot quieter, I guess I was only noticing the noise when the fuel was getting low. And yes I'm well aware of the schools of thought on breaking in a bike but I'm more comfortable with doing what I've always done, mostly being easy on it, varying rpm's, and an occasional burst of power here and there. Thanks for the replies everyone. Patrick |
