When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I recently replaced the major top end gaskets on my 93 FLHTCU. The rear cylinder sounds great, however, the front cylinder has a noise I don't like at all. I recorded at idle and 2k RPM and had a friend listen to it and he thought it might be the exhaust lifter not operating right, like it had collapsed or something. He is NOT a bike guy so was just going off his car knowledge. I only took the major components off. I did not remove the valves or do anything with the lifters, and I am certain the pushrods are in the correct locations. I do not know if the lifters are hydraulic or not. If hydraulic, how do I get them UP again?
If you removed the lower rocker box , you did mess with the lifters by default. They are hydraulic and if you did not slowly retighten the lower rocker box bolts they would not have blead down. Hope this isn't the case is it?
If that is where the lower end of the push rod guides set into, no I did not touch those at all. I did the same procedure on the front cylinder as I did on the rear cylinder.
Sorry, wrong part. Yes I had the lower rocker boxes off. Had it stripped down to the pistons, which I removed to clean up. I’m not sure what I did differently on the front cylinder.
Hard to tell in video, would have liked to hear it sit and idle for a bit, but sometimes it can take 10 miles or so for a collapsed lifter to pump up, take it for a ride.
I doubt you have the pushrods mixed up because the exhaust pushrod is .235" longer than the intake which would have led to catastrophic failure.. As said might just take time to pump up...But just incase here's the color code for the pushrods.. Wouldn't take but a few minutes to open the pushrod covers to confirm...
Slideshow: Jason Momoa's latest restoration project blends 1920s Harley-Davidsons with modern electric technology, creating some of the most unusual hybrid motorcycles ever built.
Harley-Davidson Fat Boy Becomes a Dark, Decepticon-Inspired Custom
Slideshow: Killer Custom's latest build relies on styling changes rather than performance upgrades, giving the cruiser an entirely different personality.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Lifter problem
