Question about Harley Davidson Motorcycles

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2012 Harley switchback Lots of vibration and loud tappets

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Hi Anonymous, and the usual suspects are:
1. Wheels and or tires unbalanced, worn or damaged.
2. Eng ine/ transmission/vehicle not aligned properly.
3. Primary chain badly worn or links tight as a result of insufficient lubrication or misalignment.
4. Engine to transmission mounting bolts loose.
5. Upper engine mounting bracket loose.
6. Ignition timing incorrect/poorly tuned engine
7. Internal engine problem.
8. Broken frame
Good luck

Posted on May 21, 2015


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Posted on Jan 02, 2017


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Hi Anonymous, and the usual suspects are:
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2. Loose, corroded or broken battery cable.
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Apr 22, 2013 | Harley Davidson FXDWG Dyna Wide Glide...

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Hi Anonymous, for more information about your question please visit the website below. Good luck and have nice day.
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Feb 09, 2013 | 2008 Harley Davidson FLHX Street Glide

1 Answer

2012 Harley Davidson FLSTC vibration problems

Hi J Steffel, this question has already been asked and answered. Thank you

Mar 15, 2012 | 2000 Harley Davidson FLSTC Heritage...

1 Answer

Loud ticking in engine and rear breaks worn out at 1932 miles Harley says they are not responsible for the breaks being worn out and they don't know what the loud ticking is. Might be on the top side...

The loud ticking could be a tappet on the cam. Most people refer to these as "lifters". Each tappet has a roller bearing on the cam end of it. The roller rides on the camshaft lobe. If the bearing locks up, it wears a flat spot on the bearing and scars up the camshaft. It also makes a loud tapping noise. Since I don't have any connection to Harley-Davidson, I cannot tell you anything about their warranty. But, I don't see how the brake pads could be worn out in less than 2000 miles. But, they do consider brake pads as "normal wear items" just like most auto makers do and they will not replace them under warranty.

Good Luck

Sep 02, 2011 | 2011 Harley Davidson FLHXXX Street Glide...

1 Answer

I have a 2001 harley heritage. Wondering how often I should have the valves adjusted. Thanks

Your engine is equipped with hydraulic tappets just like your car engine has. There is no way or need to adjust the valves. If you're hearing a slight tapping noise under the rocker box covers, this is normal. If you're hearing a loud tapping noise that comes and goes, it could be a roller on the end of a tappet going bad and you should have it looked into.

Good Luck

Jun 01, 2011 | 2001 Harley Davidson FLSTS Heritage...

1 Answer

2002 1200 sportster trailered for 400 miles and rode for 2 miles and loud tapping noise. now only intermittently tapping

It sounds like you may be losing a tappet roller. You'll have to pull the tappets out one at a time and check the roller on the end of the tappets.

Good Luck

Sep 06, 2010 | Harley Davidson XL 1200 C Sportster Custom...

1 Answer

Top End noice

Not a lot of information but I assume you're asking about some noise in the top end of your engine on your Heritage.

A Harley-Davidson engine is of an older design being that the valves are pushrod operated. It is not an overhead cam design like a lot of other bikes that try to look like Harleys. Harley has decided to stick with this design for as long as they can because it lends itself to what most Harley riders are looking for in their bikes, the traditional look lines and sound of the older motorcycles.

As such, there are a lot of components in the top end that must have some "running clearance" in order to operate. Push rods, rocker arms, rocker arm bushings, and such. A slight clatter or tapping noise in not uncommon. Now, it the noise if loud enough to make people turn their heads when you start the bike, you may have a problem. Usually a serious problem in the top end of the engine results in a poorly running engine as well.

You engine is equipped with hydraulic tappets. As the engine runs and things start to expand, the tappets are "pumped up" with oil to maintain a "zero clearance" in the valve train. If you have a tappet gone bad, it will make a loud erratic tapping noise that is sometimes accompanied by a bad running engine. You could have lost a roller on the end of a tappet as well. The Twin Cam engine was designed to help remedy the problem with the valve train geometry in the Evolution and earlier engines. It did straighten the pushrods up a bit but I still think it's possible to lose a tappet roller. If the noise is this loud, you will have to pull the tappet blocks and inspect the tappets to see if you have lost a roller.

Good Luck

Jul 19, 2010 | 2001 Harley Davidson FLSTC - FLSTCI...

1 Answer

Tapping coming from front cyclinder

Since I can't hear the noise for myself, the only thing I can do is give you my ideas as to the cause. Is the noise a ticking noise or a knocking noise?

First off, if it's not loud enough to make people turn their heads when you start the bike, don't worry about it. Your engine is the old pushrod design and the rocker arms are going to make a little noise. Moving mechanical parts make noise.

Now, if it's a loud noise, my first guess would be that you have a bad tappet. Either the hydraulic part of the tappet is bad and is not keeping the pushrods to zero backlash or the roller bearing on the end of the tappet is bad.

If you're sure your problem is on the front cylinder, pop the pushrod tubes loose on that cylinder. Feel of the pushrods. If you feel on that is loose, there's where your problem is. Pull the rocker box, take the rocker arms out of the lower plate and then pull the tappet block. You'll probably find a bad tappet. If so, make sure you check the camshaft for damage as well.

Good Luck

Jun 03, 2010 | 2005 Harley Davidson FLSTC - FLSTCI...

1 Answer

2000 dyna super sport started knocking, then back fired. Now a loud knocking, rough idle, and oil comes from the top of the engine. any thoughts?

My first guess would be that you lost the roller bearing on the end of a tappet. I've heard those things knock so loudly that it sounded like something on top of the piston. These rollers are a weak spot in the Harley engine design in my opinion. I've seen them go bad in as little as 13,000 miles. But, I've also seen original tappets running in an engine with 75,000 miles on it. Usually, if they are going to give trouble, it occurs at about 25-30 thousand miles. They are especially prone to failure if an aftermarket high performance camshaft has been installed in the engine.

The problem is that the damage is not limited to just the tappet. It always destroys the camshaft. The lobe that the roller runs on is always scarred up badly. I've seen it cause a valve to get bent as well. If this is the problem, count on pulling the rocker boxes, the tappet blocks, and the gear case cover (nosecone), and possibly the heads.

Oct 20, 2009 | 2000 Harley Davidson FXDX Dyna Super Glide...

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