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If valves are adjusted to tight they will burn. Metal expands and contracts as it heats and cools. Because of this there needs to be some clearance for the metal to expand.
The valve loses most of it's heat through the valve seat. If the valve doesn't seat fully it will start to get hotter and hotter. Sooner or later the valve starts to melt or burnNEW ANSWER: Someone changed my answer to the wrong answer. The correct answer like I said the first time is, if the valve is to tight then it will not seat and you will have very little to no compression on that cylinder. Nother words you will have an engine miss on that cylinder. It can also contack the pistion at TDC / Top dead center and bend the valve.
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Why would a Yamaha raptor-motor turn over slow?
valves are adjusted to tight
What happens when rockers are not ajusted?
Assuming solid lifters (as opposed to hydraulic, self-adjusting lifters) you could burn valves if the lifters are adjusted too tight or have excessive valve clatter if the lifters are adjusted too loose.
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Valves adjusted to tight. Firing order mixed up.
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can the valves be adjusted on a 1998 454 7.4 vortex with the roller lifters
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Can the push rods on a Chevy 350 prevent the motor starting if the rods are to tight?
Yes. If the valves (rocker arms/push rods) are adjusted too tight, the valves will hang open instead of closing. This will result in a loss of compression at the very least. It can also prevent the engine from pulling in air/fuel as well.
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have your valves adjusted adjust your valves
Do the valves need to be adjusted on a 1991 Jeep 4.0?
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The valves won't be able to fully close at higher rpm.
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Burned or bent intake or exhaust valve. Valves adjusted to tight, Burned pistion. Head gasket blowed between 2 cylinders.
