Question about 1993 Harley Davidson XLH Sportster 883 Hugger
Posted by Anonymous on
Hi Anonymous, if you have a loose stock push rod where you can actually feel up and down movement, with a stock hydraulic lifter all the way down on the cams base circle, you have either a broken valve spring or springs, the lifter has bled down and will not pump back up, or my personal favorite, the needle bearings in the tappet roller ( bottom of hydraulic lifter ) have decided they no longer want to play with the rest of the chidren. In any case you should hear loud tapping coming the bottom or top of the push rod tube when the engine is running. Good luck
Posted on Apr 20, 2015
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Posted on Jan 02, 2017
SOURCE: have tapping sound in top
sounds more like a lifter is not releasing it's pressure. to get the pressure off valve the motor has to be at top dead center compression for that cylinder.both rockers should have some give if at tdc. u can remove top rocker cover to check rockers. if spring is weak the valve won't open al the way or close correctly.
Posted on Sep 11, 2010
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