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06 A6 pet 2.0T very loud engine noise at bulk-head side of rocker

Very loud engine noise at bulk-head side of rocker cover. like a tappet noise. rockers all sitting in correct position

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Ur car uses hydrolic lifters instead of tappets but they sound the same when faulty. most likely a 'sticky' lifter. very expensive to change.

Posted on Jun 20, 2010

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Posted on Jan 02, 2017

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I'm still having problem after setting tappets car runs after + - 30k ,makes a tappet noise just one push rod and rocker runs loose but nuts are all tight on the rocker, plz if can advise me regards


Hard to help much without knowing what type of vehicle you are working on, but I would suggest pulling the rocker and making a mark with a sharpie or paint and re-installing everything tight. Run the engine until you get the rattle back, then check the mark to see if the rocker stud is coming out of the head.

Oct 06, 2016 | Cars & Trucks

3 Answers

3.8 dodge runs great but has a very loud ticking/tapping under valve cover gets louder when warmed up or more rpm


Not familiar with this specific engine, but I think you have adjustable rocker arms to adjust valve lash. May just need adjustment, but inspection will show if something is damaged.

Jan 22, 2015 | 2005 Dodge Grand Caravan

1 Answer

2001 grand cherokee 4.0l valve rocker torque specs


5 million made.
it's in the fsm book
posted here over 300 times.
are you asking , how to set rockers ?

chapter 9 page 27
------------------text fsm---------------------
INSPECTION
Inspect the pivot surface area of each rocker arm.
Replace any that are scuffed, pitted, cracked or
excessively worn.
Inspect the valve stem tip contact surface of each
rocker arm and replace any rocker arm that is deeply
pitted.
Inspect each push rod end for excessive wear and
replace as required. If any push rod is excessively
worn because of lack of oil, replace it and inspect the
corresponding hydraulic tappet for excessive wear.
Inspect the push rods for straightness by rolling
them on a flat surface or by shining a light between
the push rod and the flat surface.
A wear pattern along the length of the push rod is
not normal. Inspect the engine cylinder head for
obstruction if this condition exists.
INSTALLATION
NOTE: This procedure can be done with the engine
in or out of the vehicle.
(1) Lubricate the ball ends of the push rods with
Mopart Engine Oil Supplement, or equivalent and
install push rods in their original locations. Ensure
that the bottom end of each push rod is centered in
the tappet plunger cap seat.
(2) Using Mopart Engine Oil Supplement, or
equivalent, lubricate the area of the rocker arm that
the pivot contacts. Install rocker arms, pivots and
bridge above each cylinder in their originally position
(Fig. 23).
(3) Loosely install the capscrews through each
bridge.
(4) At each bridge, tighten the capscrews alternately,
one turn at a time, to avoid damaging the
bridge. Tighten the capscrews to 28 N·m (21 ft. lbs.)
torque.
(5) Install the engine cylinder head cover (Refer to
9 - ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - INSTALLATION).

Mar 13, 2011 | Jeep Grand Cherokee Cars & Trucks

1 Answer

How to measure tappet clearance with dial gauge


When setting tappets, it has to be born inind that the valve stem wears an indentation into the face of the rocker. This prevents a really accurate tappet adjustment, so the customer is right again. If you do not posess a tappet setting dial gauge, a normal engineers dial gauge will do just as well. The procedure is the same as using your feeler gauge except that you set the dial gauge up on the cylinder head with the pointer resting on the head of the rocker. Press down fairly firmly on the rocker valve end and zero the gauge. Next lift up on the rocker and read off the clearance, from the gauge, Use a magnetic base to support your gauge and repeat the pocedure for each valve pair.

Mar 25, 2010 | 1988 Mitsubishi Cargo

1 Answer

Fast tapping sound from top drivers side of engine when excellerating fast any ideas?


Tapping on the top of an engine is caused by excess valve tappet clearance.

You can have a worn rocker arm also.

Loose valve tappets usually are the loudest at a constant engine speed. when there is little torgue being produced.

A worn rocker arm with a bearing problem will make more noise during acclleration.

Feb 11, 2010 | 2005 Peugeot 405

2 Answers

I have a noise tappet on my range rover v8 how can i stop it


The tappets are worn out! so they can not fill with the oil to eliminate the clearance between the tappet and the rocker arm! change them!

Sep 14, 2009 | 1993 Land Rover Range Rover County

2 Answers

Adjust tappets


Hi,
The method of adjusting the tappets is the same on most engines that don't have hydraulic tappets.
The gap between rocker arm pad and the top of the valve stem is important for several reasons - to allow for expansion of the metal, to ensure that the valve is fully closed when needed, and to ensure the smooth running/timing of the engine.


The rocker cover gasket or oil filler cap leak eventually over a period of time and the top of the engine gets in a right mess, like the one shown here.
Remove the filler (series have a 7/16" bolt in the side of the cover to retain the filler)
The heater hoses are held by one of the three acorn nuts that hold the rocker cover on. Remove the center nut, and then slacken the 10mm pinch bolt enough for the pipe support to be removed.

Remove the other two acorn nuts and alloy washers, then the rocker cover will lift away.
Each tappet should have a locknut and slotted thread - you will need a 13mm ring spanner and blade screwdriver.

Starting at the front of the engine - turn the crankshaft by way of the crank bolt until No2 valve is open. The camshaft lobe for No1 is now out of the way and the tappet for it can be adjusted. Undo the locknut a couple of turns - if the threaded part turns as well, then keep it still with a screwdriver.
Insert the right thickness blade in the gap between the rocker pad and top of the valve stem and turn the tappet thread until the blade is slightly pinched. Keep the screwdriver dead still and tighten the locknut.
You may find that the tappet gap will close too much when you tighten the locknut. If that happens, then re-set the gap, allowing for this. Work through all 8-tappets, making sure that you set the correct gap for the valve - inlet or exhaust. Once done - clean around the top of the head, the gasket faces, and the rocker cover inside and out. Sticky gaskets are very handy.
Refit the cover, use new alloy washers on the three studs, and re-attach the heater hose clamp.
For pictures you can refer to: http://forums.lr4x4.com/index.php?showtopic=8023

Thank You for contacting Fixya.com

Aug 03, 2009 | 1996 Land Rover Discovery

2 Answers

Valve clearance


tappets dont squeak .. you want to hope the noise is coming from an ageing or loose fan belt .. if it is really coming from inside the valve cover then it could be a blocked oil passage that lubs the cam and its bearings ..this would soon cause a major engine failure .. other possibilities .. a bad bearing in the idler pully, water pump or alternator (a drop of oil on those can help identify the failing bearing) ... also at times the distributor can cause noise if its bearings run dry .. there is a really neat stethoscope like tool that allows you to listen to various parts and places to locat the problem .. but be careful playing around a running engine (no ties, long hair, necklaces .. if its the fan belt then it will likely make more noise as the engine is accelerating .. turning the lights on might increase or change the noise .. a leaky vacuum hose can cause a whistle like sound. .

Jul 13, 2009 | 1993 Mazda 323

1 Answer

Engine is making loud noise from rocker cover area. oil pressure


tapets or camshaft has gone, check them out before you start it again

Jun 06, 2009 | 1999 Cadillac Catera

2 Answers

Loud ticking/knocking/rattling sound when I start/accelerate


hi is it miss-firing as it sounds like a knocking noise can be anything but if you can feel it on the accelerater pedal then the noise sounds like its on the inlet valve side which would transfere the noise up the throttle body where the accelerater is located it could be something as simple as a tappet come loose to a burned valve you need to have a look do a compression test and take the rocker cover off see if theres anything come loose yates210456

Oct 13, 2008 | 2000 Dodge Grand Caravan

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