HOW TO CHECK FOR BURNT, BENT OR BROKEN INTAKE AND EXHAUST VALVES WITHOUT REMOVING CYLINDER HEAD

In this lesson I discuss the common symptoms of bad intake and exhaust valves. I also explain different possible ways to check for burnt, bent, sticky or broken valves without removing the cylinder head. Poor engine performance, noise and an engine misfire are good indicators of possible valve issues.
Top5autorepairs
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[@Dicky-the-Driver]

That's the best described video I've seen online. Top job!

[@Godsoldier]

This was very Helpful, thanks Brother!

[@pwash474]

Good video best I have seen a thorough! Thanks

[@dennisonchieku2483]

Thank you sir. Very informative

[@Hiwest_obs95]

Much appreciated bradduh for the information you have shared and demonstrated!🤙🏽🥃

[@steelcitycaprice.899]

Been through that..it stinks but runs great when fixed correctly 👍🏽

[@florenbaron7111]

My Econoline only shakes after warming up. No engine codes. Air flowing out of the oil fill tube. Some smoke or steam out of the exhaust pipe. I replaced the faulty water pump and used both head gasket sealer and oil seal. It seemed to reduce the smoke a lot but when I press the gas in drive or reverse the van will barely move. The scanner picks up knocking, only with Forscan and not other scanners like BlueDriver. I am wondering what it could be. It mainly shakes on the driver side of the engine. I really hope it's not the a cylinder or wall. Please share some of your expertise with me. What about leaking valve seals, a bad sensor, etc? The temperature on the scanner shows much hotter than the guage on the instrument cluster. It barely moves. I am so confused. Thank you.

[@jim2611]

Hi, great videos. I live in Sydney Australia. My 2007 Toyota Corolla car with a 2ZR-FE engine has a ticking/pinging/knocking noise on acceleration and on idle vibrates a bit. There's no oil in the coolant and no water/coolant in the oil. I'm not losing coolant or oil. However, I found compression low in cylinders 3 & 4 (C1 & C2 125 psi C3 & C4 75 psi). I placed oil in C4 and redid the compression test - no change. The funny thing is when I start the compression test on C4 first it gives me 55 psi. But when I do C3 (75) and then go back and do C4 - C4 comes up 70 75 psi - weird! Anyway, without taking the head apart, how can I tell if there's just a hole in the head gasket between cylinders 3 & 4? Is it unlikely to be a valve if both C3 & C4 have low compression? Cheers, Jim

[@shastrynaidoo5261]

Hi thanks for sharing your knowledge its very informative, just one question can i do a leak down test or a dry test when the cylinder head is still attached to the engine? Reason being,on my w204 i met an accident and the timing chain slipped of, my mechanic says my valves are bent i just want to be 100% sure before i can start working on changing the valves,can you advise

[@victornaja7927]

im after a misfire i cant figure out. ive done the following test and the look normal, copression test ok, leak down test ok, smoked test ok, ruled out good spark plug an good coil and good injector, no intake leaks. only thing i notice is misfire ONLY on idle. if you press gas just a little say 1k rps NO MORE MISIRE soon as gas released there is mis fire cylinder number 1 only . 2014 vw routan 3.6l v6 engine. thank you . yes i have pulsing limp noid light for injector and i do have spark on coil. thank you.

[@SonOfNone]

Check idle air control valve or upstream o2 sensor(s). A stuck valve is also a possibility, but much more invasive than the first two.

[@akwajithomas4282]

Am having the same issue with my top cylinder in my Corolla 2006, one out of the 4 valves isn't working and it casing my car to constantly shake and if I stand at one place while on motion it continues shaking

[@marqwisknight8175]

I have a 2014 dodge caravan. 3.6 and i have a cylinder 1 misfire that i seem to cannot fix. With my scanner i can see that it only misfires at Idle. & after replacing the head it still doing that same thing. What else could it be?? Here is a list of parts ive replaced Right rear cylinder head Timing chain assembly replaced Cylinder 1 fuel injector (replaced twice) Fuel injector complete wire harness Cylinder 1 Spark plug Coil pack Valve covers gasket Brand new* Replaced PCM

[@victornaja7927]

hey boss shine some light on me please. can you have a burn valve if leak down test results show no leaks.

[@MrFryfish]

Brake cleaner will evaporate in no time. But brake fluid probably would work better as it is an very good penetrant... Water might be to thick for that, I have not tried..

[@fisalsawad3029]

أحسنت

[@andreanewell9789]

Hey thank you for you videos. My car is at the mechanic and he says the valves are bent because car is out of time. He is say we need a whole new motor is this true? Why can't the valves be changed?

[@Top5AutoRepairs]

The valves can cause damage/puncture the piston head and if the valves break off it can damage the cylinder wall.

[@andreanewell9789]

I'm not sure mechanic only said they were bent. Thanks for your response

[@yensuenoch9539]

Hi there

[@ritchiecooks]

I have an issue with mine, it won't adjust the valve no matter how many times I try, but I have good compression. Any idea what it could be? It's just one vale and one side only.