Tip & How-To about Isuzu Trooper

Engine Valve Train ? Ticking Noise

This is a step by step guide on how to find, remove, repair, and refit noisy valve lifters in your Isuzu 6VD1 engine.

The first picture explains a good way to figure out which side the noisy lifter is coming from, by using a stethoscope.


The second picture is showing how the excessive clearence in between the valve and the valve stem itself cause's the ticking sound you hear. Of course you will need to remove the rocker cover to get to the vavle assembly.


The 3rd picture shows the wear on the face of the lifter or lash adjuster once you have pulled it out, and once again you will need to remove the valve train to do this. Just mark with a white marker the valves with the excessive clearence before you pull the valve assembly off.


The 4th picture is showing how to remove the valve lash adjuster from the rocker itself. As it says in the pic. be sure not to damage the O-ring as you remove it.


The 5th picture is showing how to depress the check ball in the lash adjuster once it is remove so that the excess oil can be removed from it prior to cleaning and inspecting it.


The 6th picture is showing that carburettor cleaner is sprayed on the lash adjuster, but make sure that the oring is carefully removed first. Then check for wear and tarnishing after cleaning.


The 7th picture is showing the adjuster fully submerged in a cleaning solution like Calite to thoroughly clean it and while it is submerged, working the check ball in and out to get it really clean.


Now once this has been done then soak the lash adjuster in engine oil and work the check ball to get the oil into the valve body.
Refit the o-ring and then refit back into the rocker.
Reassemble the rocker and valve assembly to the head and make valve clearence adjustments.

The last picture shows the refitting of the rocker cover with new gaskets and sealant being used, you don't want to have to remove it because its leaking.


Well I hope that this quick overveiw of repairing those noisy and rattly lifters will be of great use and also save you a bit of money.

Happy motoring everyone.

Regards

Jason

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2 Answers

If ticking sound don't go away after flushing oil change is there a need to repair engine


Ticking sound is typical of slack in the valve train. Try using a wood dowell "stethescope" and touch it to the rocker arm cover over each cylinder. If a rocker arm adjustment is too slack, you'll hear a clicking sound rather than a muted murmur. If you find the noisy lifter you will need to remove the rocker arm cover and adjust it. CAUTION NOTE - It is possible that a hydraulic lifter may have some grit in the internal valve. That would stop the lifter from functioning properly.

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1 Answer

valve setting cougar 1989 3.8 v6 how to do it


Hi Bill, I'm fairly sure your vehicle has hydrolic tappets. If they are noisy I advise replacing the lifter assemblies. The lifters ride on top of the camshaft which is usually fitted inside the engine block. Depending on the engine you may be able to remove the lifters with a stiff wire onto which a very small hook has been fashioned at its end. Remove the rocker shaft assembly and then the push rods. make sure the wire is the correct length to reach the lifters and engage the hook into the clips on top of the lifters and gently pull them out. Before fitting the new lifters, fill a container with a very thin lubricating oil or diesel, submerge the lifters in the oil and with a suitable tool which will not damage the surface where the push rods rest, pump them until all signs of air are evacuated from each. Fit the new units into the engine and refit the rocker shaft assembly. Make the first adjustment of the valves using 0.30mm feeler gauge. If possible get a third tappet cover and cut off the top by removing enough material to allow the use of the tools required to carry out final adjustments. Start the engine and have it running at idle speed. the until the hydrolic followers become fully charged. the sound you should hear is a clacking sound. Tighten further until the sound disappears and then a further half turn and then tighten the locking nut. Some vehicles are fitted with single self locking nuts, which should be replaced with new. Once the engine is running as it should replace the tappet covers and all the other stuff, put your feet up, give yourself a pat on the back or get someone else to that for you and you should be done. Regards John

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My 1998 Buick Lesabre ,I just had an oil change, it just developed has noisy lifters. Also the antifreeze reservoir is always losing the fluid, I am always refilling.


Suggest you check your exhaust on startup, is it very steamed up. Unless you see fluid on the ground after you have been driving, it may be being burnt inside the engine via a leaking head gasket, causing part of the head to misfire, 1 or 2 cyls. Is the oil milky? a sure sign of a leaking manifold gasket. At the end of the day, the coolant must be going somewhere, if its not on the floor, its in the head/manifold. A manifold leak is not so bad, Head gasket is not so good..worth doing a compression test and block test if you can.Also, change the oil again and put in at lest 10W-30 weight, your car is too old for 5/20 5/30...Hope that helps..Tim

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If the engine runs good and has high mileage, it might be the timing chain guides that are worn out

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