Q: ok i have a top end tick like a stuck valve used seafoam it stopped now back on 1997 Mercedes-Benz E420

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help... comp. is good idle is good, take off good,everything is good but the dang tick
(1) Answer
Try 'Marvel Mystery Oil' , if 'seafoam helped a little , maybe this'll help more. - Use one quart in place of regular oil and make sure to use a GOOD grade of the specified viscosity oil and OEM filter. IF the noise is only a stuck lifter , then that may help , if it's a mechanical failure , then you might want to have an EXPERIENCED MB tech listen to it , before it's to late! Good luck.