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This car has hydraulic lifters( tappets} therefore should not adjustment, you probably have a bad or weak lifter. But, in any case you have to remove the valve covers to make the adjustment. You will see the adjustable bolt on the rocker arm. rotate the engine until the valve is all the way to the top, [no tension on the valve spring] then place a feeler Gage in between the rocker arm and the valve stem, adjust the rocker arm until the feeler Gage is snug but not tight. Do this with each valve. Check the book for the correct Gage to use but I think it is a .018.
if its upper noise eg folowers and lifters if they are hydrolic lifters where these replaced are the cams ok if they are manually ajustable tappets these can be ajusted unless the following are goosed again the cams are pitted or mishapen will need new cam shaft the lifter rods are worn or week valve springs but if they are hydrolic will have to be replaced inc cam shaft hope this makes sence ivan
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
Hi, your engine has hydraulic lifters, but they are not adjustable. If you hear ticking there, a lifter has likely failed and needs to be replaced. please let me know if you have more questions, and thanks for using FixYa.
The lifters can be cleaned by getting the engine nice and hot and then adding an engine flush to the oil and leaving the engine running at a high tickover for about 15 to 20 minutes, and then giving the car an oil and filter change.
Are you sure its the tappets and not the timing chain?