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Re: What causes valves to stick?
On a rebuild my guess would be the guide clearance was insufficient on the valves.
On an older engine, stuck valves happen usually because of excessive buildup on the valve stem of oil and then sitting for an extended period, or it can happen when running an engine on varnished gasoline and then shutting it down. The varnished gas may run, but it doesn’t all burn and then when it cools on valve stems it glues them open.
A bent valve can stick as well but that again is on the shop if that happened on a rebuild.
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44 Willys MB
52 M38A1
64 Corvette Coupe
68 Camaro 'vert LT1 & TH700
69 Z/28 355 12.6's @110
69 Chevy Short Step 4 1/2"/7" drop
72 Jimmy 4WD 4spd 4" & 35's
02 GMC 2500HD 4x4 Duramax
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