What causes engine valves to bend?


What happens if exhaust valve doesn’t open?

If your exhaust valve remains open until a few degrees AFTER BOTTOM dead center (ABDC), then it is allowing the remaining, already burnt, gases during the next upstroke, to be compressed. That doesn’t make sense.

Can bent valves cause smoke?

Bent Valve If one of the valves of your engine gets bent this can allow oil from the overhead crank to drip down into the cylinder wall via the valve stem which can cause you to see blue smoke coming out of your exhaust.

Will a bent valve make noise?

Yes they make noise.

Will a compression test show a bent valve?

Yes, if you bent a valve it’s not sealing properly and you will lose compression from the poor seal…

Can you have good compression with bent valves?

New Member. A regular old compression test would do it. If the valve is bent there is a high probability that the compression in that cylinder would be really low.

How much does it cost to fix a bent valve?

The average cost for a valve adjustment is between $246 and $336. Labor costs are estimated between $220 and $278 while parts are priced between $26 and $58.

Can a car run with bent valves?

A bent valve could start a fatigue crack in the stem and if it breaks you drop the valve in the cylinder. if the valves are not bent that much, then it can still run with most likely not much problems. If it has bent significantly, it wont run right and can possible break off if it hits the piston and drop the valve.

Can you fix a bent valve?

This is not possible. In order for the valves to bend they need to come in contact with something. More than likely a piston if it jumped time. As stated before it would demolish the guides, and if it kept hitting the piston once out of time it would beat a hole in the piston pretty quickly.

What causes engine valves to bend?

Bent valves occur when there is a serious problem with the timing of the engine. This is most commonly caused by a broken timing chain or timing belt. It can also occur if the timing belt slips and causes a misalignment of the camshafts and the valves.