Bent valve?

[cdummer43]

Wondering if anyone has bent a valve in there motor and how you may have come to realize that it was bent. What are the signs of a bent valve? Thanks in advance.

 

[DetMatt1]

If you have a bent valve it likely wouldn't be seating and a compression test would be a good place to start. What makes you think this? Is your engine stock or modified?

 

[moparleo]

Very simple. Remove the valve cover on the head that you think is the problem. You will probably see it without even starting the motor. I have had a valve keeper pop loose and the valve got cocked in the valve guide. A badly bent valve will stick in the guide. Valve job time.

 

[moper]

You will see the compression in that cylinder down, potentially it won;t fire at all. Once you note the low cylinder pressure, you stick an air hold on it or do a leakdown and you can hear where the air is going. Another quick reference - take the valve cover and rockers off and look. If one is suspiciously lower than the others it's probably bent.

 

[cdummer43]

If you have a bent valve it likely wouldn't be seating and a compression test would be a good place to start. What makes you think this? Is your engine stock or modified?

I replaced the valve seals last year and I had to use a little muscle to get the valve keepers loose. Don't know if I bent one slightly at that time and when I was "playing" (high speed, high RPM) at a later date if that really bent it.

 

[moparmaniac10]

When I bent my valve, I noticed it very hard to start. I took the air cleaner off, hit the throttle and heard a small ticking sound. I did a compression test, had 150 psi in all cylinders except one. That was the culprit. Only made a small mark on the piston top. Not bad. Luckily this didn't happen at high revs.

 

[Cudafever]

ok lets start from the beginning. Why do you think you bent a valve? is it ticking, knocking or just running rough?