http://www.stovebolt.com/techtips/valveadjustment.htm This'll make valve adjustments Quick and easy! Sounds like you may have a bent pushrod, behind the inspection cover. I had one do that,on my 261. sometimes the rod would rotate enough not to make noise,then,it would rotate to the cover side,and rattle like crazy.,and with that "echoing noise". Wish I had better news for ya!

Last edited by wetwilly5757; 09/28/2014 6:44 PM.

Just sold: 1955 2nd Series 6500 2-Ton Flatbed Truck
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