Help with my 48!?
Thread Starter
|
Cruiser
Joined: Jun 2010
Posts: 132
Likes: 0
Help with my 48!?
So the 48 has been my main mode of transportation for the past week since i wrecked my car a few weekends ago. Everything has been great besides the cold weather and now a strange rattling noise that almost sounds like it is coming from inside the intake. It does this only at 1/8 throttle and higher, under load and in neutral, but not idling. . .
I've checked all of the bolts on the intake, changed the gaskets for my crankcase breather, checked all of the exhaust/muffler bolts and clamps, motor mounts, even the upper rocker covers. Nothing has come loose but the noise is getting louder by the day, not by much but still.
I cant afford to have the sporty down as well since my car is a few weeks away from being back on the road. Anybody have any ideas? Could it be the bolts for the butterfly inside the intake man.?
I've taken the precaution of loading my tool bag with tools "just in case" but would really like to get this sorted out before something happens . .
Thanks for the help fellers!!
I've checked all of the bolts on the intake, changed the gaskets for my crankcase breather, checked all of the exhaust/muffler bolts and clamps, motor mounts, even the upper rocker covers. Nothing has come loose but the noise is getting louder by the day, not by much but still.
I cant afford to have the sporty down as well since my car is a few weeks away from being back on the road. Anybody have any ideas? Could it be the bolts for the butterfly inside the intake man.?
I've taken the precaution of loading my tool bag with tools "just in case" but would really like to get this sorted out before something happens . .
Thanks for the help fellers!!
Road Master
Joined: Jun 2008
Posts: 832
Likes: 3
From: Colorado
Don't count on it being in your intake, rattles can reverberate up and down the motorcycle.....I thought I had a problem in my front exhaust or rocker box, it was actually a broken bolt from my rear pipe rattling on top of the starter at certain RPM's, and the sound was "bouncing" around.......
Just sayin', look over the whole bike, unless you've taken the air cleaner off and have it truly nailed down to the intake.
Just sayin', look over the whole bike, unless you've taken the air cleaner off and have it truly nailed down to the intake.
Thread Starter
|
Cruiser
Joined: Jun 2010
Posts: 132
Likes: 0
Ok so i checked as many bolts as i could get to and couldn't find anything that was loose or broken?? I'll have a video up in a little bit. The sound quality isnt great because it was taken with my phone but it picked up the rattling very well.
Thread Starter
|
Cruiser
Joined: Jun 2010
Posts: 132
Likes: 0
Here's the video. The sound quality really blows on this one but you can hear the noise and that was all i am after. It makes the most noise when the RPM's are falling. Once it gets close to idle it stops . .
http://www.youtube.com/watch?v=Bwb7NXWSe5M
http://www.youtube.com/watch?v=Bwb7NXWSe5M
Ultimate HDF Member
Joined: Nov 2008
Posts: 6,682
Likes: 12
Sounds kinda tinny. Maybe heat sheild? Have you checked all the exhaust bolts? Make sure the baffles are tight. How many miles does it have on it? Sounds external from the video but could it be a lifter?
Road Warrior
Joined: Jul 2010
Posts: 1,598
Likes: 3
From: 27°51' N, 082°17' W
Damn, sounds tinny for sure. Doesn't sound like an engine problem I've heard but ??? Might wanna check the baffles (assuming theres some in there) and the exhaust clamps. Anything bouncing around inside the side covers etc. If there was a problem inside the engine you'd probably notice it in performance.
Trending Topics
Thread Starter
|
Cruiser
Joined: Jun 2010
Posts: 132
Likes: 0
Damn, sounds tinny for sure. Doesn't sound like an engine problem I've heard but ??? Might wanna check the baffles (assuming theres some in there) and the exhaust clamps. Anything bouncing around inside the side covers etc. If there was a problem inside the engine you'd probably notice it in performance.
Thanks for the advice guys!
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
