Knocking at idle
Thread Starter
|
Cruiser
Joined: Oct 2010
Posts: 205
Likes: 0
From: Houston Texas
Knocking at idle
Sitting at a stop light, the engine will start knocking. Kinda acts like it's leaning out and starving for fuel. Runs perfect other than that. Any idea where to start looking? Checked my plugs and they don't show signs of pre ignition. Was thinking timing or VOES, or maybe an intake leak?
94 FXSTS, S&S super E, screaming eagle module. Last tank was premium.
94 FXSTS, S&S super E, screaming eagle module. Last tank was premium.
Thread Starter
|
Cruiser
Joined: Oct 2010
Posts: 205
Likes: 0
From: Houston Texas
Will do. Wouldn't that cause a problem throughout and not just at idle.
Elite HDF Member
Joined: Sep 2007
Posts: 4,468
Likes: 12
From: Bluffton, South Carolina
Spark knock at an idle with no load?? Not likely I think it is something mechanical, you need to determine where it is coming from. Could be a lifter or cam bearing going south. Then we surely can be of some assistance
Road Captain
Joined: Aug 2011
Posts: 538
Likes: 3
From: Florida
This may not be very likely but i recently experienced a similar symptom with my new motor, whenever it was good and hot it would start knocking at idle pretty loud. Turned out to be the pushrods hitting the tubes, the echo inside the motor made it sound very deep and sounded like it was coming from the top end, so i didnt expect it to be the pushrods. If it starts knocking watch your pushrod tubes for movement and give each one a little push/pull, if one were hitting the noise will disappear when you move the tube a little. The angle of the front exhaust makes it a problem area for clearances. Solution is to check for bent pushrod and replace, trim top pushrod tube, and re-align the rocker box. Like a said.. its kind of a shot in the dark, but very easy to check for.
Trending Topics
Thread Starter
|
Cruiser
Joined: Oct 2010
Posts: 205
Likes: 0
From: Houston Texas
Thanks guys. I bought the bike last October, the speedo shows 15,000 but who knows if that's the actaul mileage. I've got a new cam bearing in my box. Guess it's time to tear into it.
HD Forum Stories
The Best of Harley-Davidson for Lifelong Riders
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom
Verdad Gallardo
6 Weirdest Harley-Davidsons Ever Sold to the Public
Verdad Gallardo
7 Times Harley-Davidson Chucked Tradition Out the Window
Verdad Gallardo
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
