At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
I have a very loud tapping noise in my 00 chevy malibu!Ive replaced all the lifters and tightened the rocker arms.Put it all back together still have the same exact noise,any suggestions on what it may be,or How i can quiet it down?
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
yes they do wear out and will not hold oil pressure. I would be checking the pivot points of the rockers and the face of the rockers where they hit on the valve end. I say this because if the hydraulic tappets were so bad you would have very low oil pressure at idle.
if you have a stethascope or even a wood dowel i would check the lifters. if you have higher miles this sounds like a hydraulic lifter pumping up. if you change to a heavier oil it will go away or reduce. thats the cheap fix.
It could be lifters but its more likely that your not getting oil to the top right away. Probably plugged oil passages in the cylinder head. Remove the valve covers and clean it out. Change your oil and see if it helps. The damage may alreay be done though
Most likely its just your lifters clapping as they make contact, until the oil starts flowing good through them, then it goes away. My car has been doing that for a long time. Never had any problems. The rods are pushed up by the camshaft, the rods push down rocker arms which then open the valves. The rods are round at the tips and sit in lifters that pump oil through them up to the top of the engine and then out onto the valve springs. If your car has a lot of miles you may consider putting a thicker oil, something like 10w40.
Could be a number of things, but if it just sounds like a heavy lifter tick I have a bunch of chevys that do the same thing including a 2009 sierra. Gm delaler says its normal for these engines to do this because of carbon build up. Not the answer I wanted to hear about a brand new truck, but Ive got the same answer from other dealer techs on other gm cars as well. If it does not sound like a lifter it could be one of the bearings in a pulley starting to go bad.
Check Utube for lifter tap, valve tap, and rod bearing noise. If you pull each spark plug one at a time, plugging it back in after each one, the tapping will go away if it's a rod bearing. At any rate, on your next oil change add some valve-medic or similar additive for valve noise. Make sure you follow direction or you will get massive lifter tap if you pour it into a cold engine.
ive had this problem the loud tapping noise if properly you have the wrong oil in the engine the lifters only have a very small hole in for the to get in so if it to thick it cant get in causing the slapping noise.
loud and sudden rocker arm and lifter noise after adding oil.
×