In and of itself, no. That's usually a sign of a main bearing going out, though.
No but an engine running like that can damage the valves.
If the timing belt breaks on a 1998 Volvo V40 2.0, it can lead to significant engine damage, as this model has an interference engine. In an interference engine, the pistons and valves occupy the same space, meaning that a broken belt can cause the pistons to collide with the open valves, resulting in bent valves, damaged pistons, or other severe engine damage. Therefore, while the car itself may not pose an immediate safety risk in terms of driving, the mechanical failure can lead to costly repairs and potential engine failure. Regular maintenance and timely replacement of the timing belt are crucial for preventing such issues.
Yes.
On an interference engine the pistons will hit the valves and cause severe internal engine damage.
On an interference engine the pistons can hit the valves. That will cause severe internal engine damage.
If the valves are incorrectly adjusted it will hurt performance.
Referring to the Auto Education and Gates (commercial) websites (refer to the links, below), the 2003 Kia Rio is referred to as an "interference engine", which means that, as with many other motor vehicles, "(i)f your timing belt breaks, the engine will continue to turn, but the camshaft stops. If any of the valves are open, and your engine is an interference engine, the piston will slam into the open valve and cause some real expensive damage", including, potentially, needing to replace the entire engine. This does not cause the valves to "bend". the valves bend, I'll ship you the bad valves.
The engine is an interference engine, if the timing belt breaks or slips it will cause damage to the valves and possibly the pistons.
yes! new valves etc, will mmost likely need new engine
If it is an interference engine valves can bend when hit by the pistons.
Incomplete combustion in an engine indicates that all of the fuel has not been burnt. Incomplete combustion can cause clogging and damage to the valves in the engine of a car.
There could be loose rings in the engine that would cause this. The valves on the engine may also be chattering.