Question about 2002 Harley Davidson FXDL Dyna Low Rider

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1450 twin cam rattles at top end when hot

It rattles like the tappets are dry, leave it for 20 minutes and its gone but comes back when its run for a while, it also runs really bad, lumpy and generally noisy..

Posted by Anonymous on

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1 Answer

Gregg Mahin

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  • Harley Davidson Master
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Hi Anonymous, take a ride or drive over to your local dealers service department, I'm sure they will be happy to take your Harley Davidson for a test ride if necessary and offer professional advice and assistance concerning your issue. Have a nice day.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/gregg_c0ec1df182c7330e

Posted on Jun 11, 2015

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thunderalley

thunderalley

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SOURCE: top end engine rattle 1989 sportster

That rattle if its a piston probably is the piston pin.If your piston were making the noise it would get louder and lock up sooner or later I would not run it until its fixed it will tear up your motor.

Posted on Sep 24, 2009

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wd4ity

wd4ity

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SOURCE: i have a 2003 twin cam 88, stock, and the rear

The TC88 engine runs typically hotter than the Evolution engine. This due to the EPA's stringent emissions laws. As a result, the engine is running very lean. The best thing you can do is take it somewhere that has an exhaust gas anylizer and have them adjust the fuel mixture. If the bike is carburated, a jet change is required. If it is fuel injected, a change may can be made in the fuel mapping. Call your local dealer and see if they can do this for you. Good Luck.

Posted on Sep 24, 2009

wd4ity

wd4ity

  • 4565 Answers

SOURCE: rattling on top end back cylider

The only thing under the rocker boxes is the rockers and the upper part of the heads with the valve springs. Getting to this area is not that difficult.

Remove the fuel tank and seat. Then, remove the six bolts that holt the top and middle rocker box covers on. Now, you're at the rocker plate with the rocker arms in it. You can also see the tops of the valve springs. Look and see if there is anything that might be causing your noise.

Now, keep in mind that a Harley engine is of an old design. It is a pushrod type engine with rocker arms that open and close the valves. They are going to make a little noise. Now, if you're having to get close to the rocker box to hear the noise, it's probably nothing to worry about. But, if you can hear the noise stand away from the bike a few feet, you may have a problem. But most things that might break or come loose under the rocker box will usually effect the way the engine runs.

Also, you could have an exhaust leak. It makes a "tick, tick, tick" type noise. Tighten the nuts on the two studs snugly but don't break them off.

Good Luck
Steve

Posted on Jun 24, 2010

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1 Answer

After my mower gets hot it makes a ticking noise


It really depends on where the "ticking" is coming from. Was the ticking there before the leak was fixed?
If it is an 04 model, it is 10 yrs old. How many hours? Try to determine if it is coming from the area by the valve covers. You may have a tappet clearance issue. Check the clearance between the tappet and valves, check both sides (Twin 18 hp?). If any are out that is where the ticking is coming from. Could also be a worn cam, but sounds like a valve tappet problem.

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My 2ltr V6 Vitara has a rattle. Top End noise, it rattles like noisy tappets on start up and gets less as the engine warms up (around five minutes) then it almost stops. So far I have pulled the rocker...


this is not SOLIDS engine, there is no LASH setting, !
the engine has a chain, and a set of hydraulic bucket valve lifters.
the chain can be bad or any lifter, can be dirty and collalpesd.
when the engine is dead and no oil pressure the lifters are normally collapsed, when you start the engine. oil pressure does 2 things
all lifters pump up, and clearance goes to zero. (no noise)
then the cam tensionor, pumps up (they fail) and chain noise ends.
some noise is ok , cold start, but most end after a minute or 2.
started.

ever read the manual? its here.
use a stethoscope to find out 1 thing , which is it the chain or lifters making that noise.
ive even runs engine with the valve covers off (messy , use a blanket to catch oil flying) to find the true cause.......

read the 2.5L here. its close. (mech. parts)
read the Alldata virtual FSM.

http://www.scantool.net/software/alldata-diy-1-month-subscription.html

Sep 12, 2013 | Suzuki Vitara Cars & Trucks

2 Answers

How to quiet lifter noise


It depends on how noisy the lifters are. Your engine is a pushrod engine and there will be some noise. Generally is just a small ticking noise due to running clearance in the rocker arm bushings and such. The tappets (lifters) in your engine are hydraulic just like the tappets in a pushrod automobile engine. If your tappets are really making a noise, like a can of rocks, you might not have enough oil pressure or the roller on the end of the tappet that runs on the cam may be bad. If the tappet is the reason for the noise, the only thing you can do is replace them. If the roller on the end locks up, it will damage the cam lobe that it runs on as well meaning the cam will have to be replaced as well.

Good Luck
Steve

Aug 21, 2011 | 2003 Harley Davidson FLHTC Electra Glide...

1 Answer

Intermediate ticking or rattle after about 20 miles of rideing but not all the time dosn't sound like a lifter 20000 miles on 06 dynasuper glyde


Yes, it could be the roller bearing that runs on the cam on the end of a tappet going bad. This is about the right mileage as well from my experiences. If they are going to go bad, they usually do it between 20 and 30 thousand miles although I had one bike lose a tappet roller with only 13 thousand miles on it. If they make it past 30 thousand, they usually last the lifetime of the engine with no problem. I have yet to understand why this happens. These rollers are indeed a weak point in the design of the engines. If you suspect this is the problem, do not run the engine until you check the problem out. If the roller locks up, it will destroy the cam that the tappet is running on because it will damage the cam lobe.

Good Luck
Steve

Aug 20, 2011 | Harley Davidson FXD Dyna Super Glide...

1 Answer

I have a 1996 1340cc harley davidson with a stuck lifter. Is there any easy tricks to get it unstuck.


By "stuck", I assume that you're talking about a collapsed lifter that will not pump up and is rattling. The only thing to do about a lifter doing this is to replace it. While you've got the tappet blocks out, check the rollers on the other tappets as well. This is the weak spot on most Big Twins, the tappets. This is why Harley designed the Twin Cam engine, to improve the valve train geometry and prevent premature failure of the valve train components. When you take the tappet blocks out, you need a set of "alignment pins" to make sure the tappet roller is running perfectly with the camshaft. They're made by Jim's tools and they aren't expensive. Be sure and clean out the tappet oil screen also. This needs to be done every other oil change.

Good Luck
Steve

May 13, 2011 | Harley Davidson FLSTC Heritage Softail...

1 Answer

2006 XL1200 I just did the heads lifter and rods, cant get oil up to top end have cycled engin several times. lifters not primeing.


Are you getting any oil back to the tank from the oil pump? Sometimes the oil pump loses it's prime and "air locks". Take the oil pressure sending unit out and spin the engine without the spark plugs in it until it pumps out a couple of ounces of oil. Put the sending unit back in and spin the engine with the starter until you start getting oil back out of the oil return hose. Spin the engine about 15 seconds or so and then wait for five minutes before you do it again. You don't want to burn up the starter. Once you get oil back to the oil tank, put the plugs back in the engine and fire it up. The lifters should pump up very quickly and stop rattling.

Or, you could take the lifters back out of the engine and use a oil squirt can to pump the tappet up. Put the nozzle into the hole on either the side or the top and pump the tappet full. Bring one piston to TDC on the compression stroke and put the tappets back in. Install the pushrods and torque the rocker arm plate back down. Allow the tappets to bleed down to where you can turn the pushrods with your fingers before you turn the engine over. Once bled down, turn the engine over so the piston is at TDC on the compression stroke and install the tappets and pushrods in the that cylinder.

Sometimes the tappets will clatter for while due to air being trapped inside of them. It takes a few minutes or a few miles of riding to get it all out. As long as the oil is returning to the oil tank, everything should be fine. The only thing that could cause troubles is that if the oil hole right at the top of the timing cover is covered by the gasket. If this is done, the tappets will not pump up but continue to rattle. You may have to take the timing cover back off and check this hole. Usually the cams fall out when this happens. You may can take the tappet out of one hole and spin the engine with the plugs out while looking into the empty tappet hole with a mirror. Watch for oil to come out of the hole there. If none comes out, check the hole between the side cover and the engine case for blockage.

Good Luck
Steve

Feb 21, 2011 | 2006 Harley Davidson XL 1200 C Sportster...

1 Answer

Hello there. I've recently bought a 54reg mk5 golf 2.0 gt fsi and the engine is making a tapping noise - even when it's been running. Is this normal?


a light tapping noise is quiet normal .Use a flushing oil before you change the oil and filter.then use 10/40 semi synthetic(as recc by VW)when engines at operating temp run at 3500 fo 30 secs,this will "charge" the hydraulic tappets,a cold engine has a valve rattle for about 15/20 secs but if longer then cam followers faulty.normally at 120,000m(roughly)
please leave feedback..

Sep 20, 2010 | Volkswagen Golf Cars & Trucks

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
Steve

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

2 Answers

I have a 96 sportster. no oil to top end


i just did a 883/1200 conversion new jugs and piston i put in a set of used 1200 f1 cams and heads now i have an oil pressure problem at idle ???????

Jun 12, 2009 | 2000 Harley Davidson XL 1200 C Sportster...

1 Answer

Hi i have just developed a rattle in the top end of my 03 crossfire ,is it cam / tappets issue etc?


70% of engine rattles in new cars are of because the engine has very minimum oil, you'll find if it has the correct amount of oil in it it will not rattle, cams dont tend to rattle, and newer cars dont use tappets now :) there hydraulic lifters.

if it does rattle, and its annoying you more than anything, and you just want to stop the rattle and not botherd about finding the actual problem them simply put thicker oil in.

but im sure you will find if it doesnt have enough oil in the car, and you fill it to maximum on the dip stick, it will stop the rattle.

Apr 10, 2009 | 2003 Chrysler Crossfire

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