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Since you replaced a valve spring you know how.. I would replace them all since one broke.. I think this car is a hydrolic lifter.. you may not have adjusted them correctky.. possibly buy new lifters, and springts from Summit racing or Jegs.. and replace them all .. this is not a very costly repair if you are doing the labor. When you have it apart look at the top of the valve that hits the rocker are.. you are looking for wear and cracks.. Look at each rocker arm looking for the same.. Please post a comment and let us know what you find..
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.
Hi , usually a knocking / pinging from the valve cover indicates a lifter tapping. Could be worn out or just worn. Do you change your oil every 3000 with high quality oil? (I always have used valvoline standard with outstanding results) Dirty oil and filter and or incorect weight oil and or using synthetic oil in older cars can result in lifters tapping. If your oil is under 2000 miles since last change and you used a high quality oil (watch who changes your oil, some places use inferior oil because its cheaper) you can buy a pint of oil treatment formula to quiet noisy lifters to coat the lifter and quiet it down. It is a sign of engine wear, but one lifter tapping a bit wont really hurt your engine mechanically. If they all get noisy, time for a valve job. Root cause is wear due to insufficient lubrication. The lifters on newer cars are all hydraulic and they self adjust. No manual adjustment is possible. Bottom line: keep your oil changed regularly using a high quality non-synthetic oil for your 1999 vehicle.
Please rate this answer! Thanks, Mike
They are self adjusting. There should be hydraulic lash adjusters. Just tighten down the camshaft and start it. If you installed new lifters, they need to be soaked in oil before installing or they will be full of air and the car probably won't start. Hope this is what you were looking for.
The only thing that could be making a loud clicking sound, is a bad valve lifter. If the clicking speeds up with speed of the motor, it's a valve lifter, either the rocker arm needs to be adjusted, or the lifter needs replacing. Which means the whole top part of the engine needs to come off.
The best cure without removeing the engine or head is to change your oil and use a 0w30 synthetic oil in the engine,if this gets rid of the noise then your good to go,if not you need to replace the lifters or have a blockage in an oil gallery.Try new oil first,the later will not be cheap to repair.
All you need is to adjust the valve tappet clearance back to the original specification. It is a time consuming effort and require passion to do it. You need to remove the top engine cover, set timing belt to top dead centre then adjust intake & exhaust valve clearance one by one. Rotare the cranckshaft 180 degree and repeat the valve clearance,. I would suggest to leave it to the expert.