Re: badly need help, burnt valve ?
The 2.4 L engine has hydraulic valve lash adjusters. Burnt valves are now a rarity. Thirty years ago it was common. Metallurgy has advanced, and most engines use sodium filled exhaust valves. These valves withstand high operating temperatures. Make sure your problem is a valve. A cracked ring will also give low compression. That will cause excessive blow-by. Check you air cleaner and make sure the PVC filter is not oil soaked.
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