We are replacing the head gasket. There is a tiny spring between the block and the head. On the exhaust side near the front. What is it? It is tiny and weak like a pen spring. Any idea what it is?
SOURCE: My 2004 Hyundai Sonata is
quite possible the front is out of alignment
possible that a weight came off from one of the tires
both of these problems cause an unbalanced ride which equates to vibration.
When was the last time you had a front end alignment?
What condition are your tires in?
When were your tires balanced?
Seems like you had a lot of work. Did you have these vibrational issues before you brought your car in? Perhaps placing your car on the lift took the front out from alignment. Anything is possible.
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I am going to answer my own question. Just in case anyone else out there is having the same issue. As it turns out....the spring is part of a part called the 'non return valve'. It is a Hyundai part (part number 2113523010). The reason we just found a tiny spring was because the piece of the part that holds the spring inside of it had deteriorated after 13 years. The little cylindrical piece and ball bearing were still down in the block. I am attaching photos to help anyone else who may have had this same issue. :-) The first pic is the new part installed in the block. The second pic is the old part in pieces after removal. :-)
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