Typically that's because the camshaft is improperly timed. If a piston kisses a valve you'll usually cause serious damage to piston, valve, head, pushrods... all because a valve tried to open at the wrong time.
Another possibility would be a seized valve, but that's far more common in engines that have not been used for a long time. I would say ,possibly a bent valve stem. if the engine has run ok in the past. although the above answer may very well be correct.
Chat with our AI personalities
Make a triangle out of straws or something. See if you can push it sideways like a square. I you try to, you either bend it, break it or push the entire thing sideways... You can't bend it like a square. this is why triangles is the strongest shape. And also tall skyscrapers are made from triangles if looked from a birds eye-view... :D:D:D
80 rods
1 chain = 4 rods.
There are 320 rods in a mile. Therefore, 80 rods is equal to 80/320 = 0.25 miles.
The average shower rod will vary from 44" (112 cm) to 72" (182 cm). There are various styles of shower rods, however, that curve or bend and are adjustable. Ones that curve will have other dimensions than a standard "straight" shower rod.