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Intake Valve Leaking, valve lapping fix?

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Old Sep 11, 2021 | 05:56 PM
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Default Intake Valve Leaking, valve lapping fix?

Cylinder head is removed from vehicle.
I did the trick where you can fill the combustion chamber with fluid and see if there is a valve which may be leaking.

I found one of my Intake valves were leaking.
now I'm wondering if lapping would fix this or is there something else I should be doing?

New seals, seats and springs will be getting installed.
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Old Sep 11, 2021 | 07:12 PM
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Could be but probably not. Worth a try but don't expect miracles.

Most likely, bent. Which happens as a result of heat etc.

My suggestion would be Manley 11620 int and 11621 exh, if it turns out to be that.
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Old Sep 11, 2021 | 07:56 PM
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Originally Posted by RB04Av
Could be but probably not. Worth a try but don't expect miracles.

Most likely, bent. Which happens as a result of heat etc.

My suggestion would be Manley 11620 int and 11621 exh, if it turns out to be that.
Being bent is a possibility but unlikely in my scenario. Car never ran hot and piston has no indication of contact.

It will still be a good idea for me to check though.
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Old Sep 11, 2021 | 08:01 PM
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If you lap it and one side doesn't show any evidence where it's touched the seat, but the seat develops a nice even pattern, then the valve is probably bent.

The car doesn't necessarily have to "run hot" to do that. Poor tuning, or even a faulty injector, can do that sort of thing.
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Old Sep 11, 2021 | 11:01 PM
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Originally Posted by RB04Av
If you lap it and one side doesn't show any evidence where it's touched the seat, but the seat develops a nice even pattern, then the valve is probably bent.

The car doesn't necessarily have to "run hot" to do that. Poor tuning, or even a faulty injector, can do that sort of thing.
Good to know. Excepted to give it a shot tomorrow. Thank you for the help
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