yes a bent valve will not seat properly. can also wear the valve slide and ruin the head.will also cause backfiring and loss of power. sometimes a bent valve will breakthen fall down and punch a hole thru the piston or the side of the cylander bore so yes a bent valve can cause further damage to your engine
you may have a bent valve
The main cause for bent valves is a failure in the timing chain or belt. When the valves and pistons are not exactly in sync, they can collide.
That would be code P0304 which translates into cylinder #4 misfire. there are a few things that could cause this code. the sparkplug could be worn, there could be a mechanical issue such as a worn, bent or broken intake or exhaust valve in that cylinder or it could also be an engine management system problem such as a bad crankshaft sensor.
If you have a bent valve slide, or valve, or valve casing, they usually wont move. Valve's and valve casings would prevent the valves from moving, while bent valve slides wont easily pull out. If you suspect a bent valve, valve casing, or slide, try cleaning and oiling it first, valves and slides can become stuck with the lack of valve oil or slide grease.
the valve bent because the piston hit it, due to a weak valve spring or over revving the engine
Worn valve, bent valve, damaged piston and/or rings, head gasket failure.
For intake or exhaust valves; Lack of oil, defective valve, bent push rod, foreign object damage, etc.
YES IT CAN BEND A VALVE WHEN THE TIMING CHAIN BROKE VALVE TRAIN NOT MOVING AND THE CRANK IS STILL MOVING CAUSING PISTON TO COME IN CONTACK WITH THE VALVE THAT WAS OPEN
rocks hit balencer from road
Yes.
check for bent or burnt valve check for bent or burnt valve